How to use

Advanced Search

Search Sites

TOP
Tetsu-to-Hagané
Vol. 63 (1977), No. 6

Tetsu-to-Hagané Vol. 63 (1977), No. 6

Grid List Abstracts

ONLINE ISSN:	1883-2954
PRINT ISSN:	0021-1575
Publisher:	The Iron and Steel Institute of Japan

Backnumber

Vol. 109 (2023)
Vol. 108 (2022)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 107 (2021)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 106 (2020)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 105 (2019)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 104 (2018)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 103 (2017)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 102 (2016)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 101 (2015)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 100 (2014)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 99 (2013)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 98 (2012)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 97 (2011)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 96 (2010)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 95 (2009)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 94 (2008)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 93 (2007)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 92 (2006)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 91 (2005)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 90 (2004)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 89 (2003)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 88 (2002)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 87 (2001)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 86 (2000)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 85 (1999)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 84 (1998)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 83 (1997)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 82 (1996)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 81 (1995)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 80 (1994)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 79 (1993)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 78 (1992)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 77 (1991)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 76 (1990)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 75 (1989)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 74 (1988)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 73 (1987)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 72 (1986)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 71 (1985)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 70 (1984)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 69 (1983)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 68 (1982)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 67 (1981)
1. No.16
2. No.15
3. No.14
4. No.13
5. No.12
6. No.11
7. No.10
8. No.9
9. No.8
10. No.7
11. No.6
12. No.5
13. No.4
14. No.3
15. No.2
16. No.1
Vol. 66 (1980)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 65 (1979)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 64 (1978)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 63 (1977)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 62 (1976)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 61 (1975)
1. No.15
2. No.14
3. No.13
4. No.12
5. No.11
6. No.10
7. No.9
8. No.8
9. No.7
10. No.6
11. No.5
12. No.4
13. No.3
14. No.2
15. No.1
Vol. 60 (1974)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 59 (1973)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 58 (1972)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 57 (1971)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 56 (1970)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 55 (1969)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 54 (1968)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 53 (1967)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 52 (1966)
1. No.13
2. No.12
3. No.11
4. No.10
5. No.9
6. No.8
7. No.7
8. No.6
9. No.5
10. No.4
11. No.3
12. No.2
13. No.1
Vol. 51 (1965)
1. No.13
2. No.12
3. No.11
4. No.10
5. No.9
6. No.8
7. No.7
8. No.6
9. No.5
10. No.4
11. No.3
12. No.2
13. No.1
Vol. 50 (1964)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 49 (1963)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 48 (1962)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 47 (1961)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 46 (1960)
1. No.14
2. No.13
3. No.12
4. No.11
5. No.10
6. No.9
7. No.8-supl
8. No.7
9. No.6
10. No.5
11. No.4
12. No.3
13. No.2
14. No.1
Vol. 45 (1959)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 44 (1958)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 43 (1957)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 42 (1956)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1
Vol. 41 (1955)
1. No.12
2. No.11
3. No.10
4. No.9
5. No.8
6. No.7
7. No.6
8. No.5
9. No.4
10. No.3
11. No.2
12. No.1

Search Phrase Ranking

26 Mar. (Last 30 Days)

Tetsu-to-Hagané Vol. 63 (1977), No. 6

フオス随感

木寺淳

pp. 899-900

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

フオス随感

Bibtex

Ris

Model Experiment on the Permeability of Gas in the Shaft of a Blast Furnace

Atsushi KIKUCHI, Toshio NAYUKI, Kiyoshi ASAKAWA, Siro MAEDA, Tasuku FUWA, Shiro BAN-YA

pp. 901-908

Abstract

The pressure drops caused by the flow of gas through the various packed beds were measured in order to obtain some information on the permeability of gas in the shaft of a blast furnace. The packed beds used in this study are (a) A-type bed or a bed packed with single sized materials (glass beads, alumina pellets, Marcona pellets, or coke), (b) B-type bed or a bed packed layer by layer with different sized materials, and (c) C-type bed or a bed composed of binary mixtures of materials with different size distributions. The results obtained are as follows: (1) The pressure drops for A-type bed were correlated by the equation, Δpg_cD²_p∈³/LμU (1-∈) (1-∈) ²=6.8φ_cX^0.8, where X=R_e/ (1-∈), R_e=D_pU_ρ/μ, D_p=diameter of materials, L=length of the bed, U=superficial velocity of gas, gc=conversion factor, ρ=density of gas, μ=viscosity of gas, ∈=fractional voidage, and Δp=pressure drop. (2) The value of φ_c was unity in the range 300<X<8000 for spherical glass beads with smooth surface, which consisted with the value obtained by HICKS under the similar conditions, while the value for another materials was greater than unity. From this, it was satisfactory to consider the coefficient φ_c as the parameter due to the degree of surface roughness and the degree of distortion. (3) The pressure drops for both B-type and C-type beds could be estimated by means of the above equation, in which D_p and φ_c were calculated by the equations W/D_p=ⁿΣ_i=1W_i/D_{p, i}, and W/φ_c=ⁿΣ_i=1W_i/φ_{c, i}, respectively, where W=weight of packing materials and i=number of layers or component of mixtures.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Model Experiment on the Permeability of Gas in the Shaft of a Blast Furnace

Bibtex

Ris

Influence of Pressure in Surrounding Atmosphere on the Cavity Formation by Gas Jet

Soichi INADA, Tetsuya WATANABE

pp. 909-916

Abstract

Through the modification of gas jet theory by BRADSHAW et al, a mathematical representation that is capable of expressing the influence of pressure in atmosphere has been proposed for the dynamic characteristic of gas jet. Experimental model tests gave also been conducted for the confirmation of the proposed model.
The results are summarized as follows:
(1) The mathematical model is found to give semi-quantitative agreement with results of experimental model tests.
(2) The results of the model tests indicate that the gas jet under the reduced pressure transports the momentum to the liquid surface with less energy loss than that under the atmospheric pressure. The cavity gets, with the decrease of pressure in atmosphere, accordingly.
(3) The approach outlined here seems to indicate an attractive suggestion for the understanding of the mass transfer in gas jet/liquid reaction.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Influence of Pressure in Surrounding Atmosphere on the Cavity Formation by Gas Jet

Bibtex

Ris

Galvanostatic Polarization Measurements on a Soid Platinum-Alkali Silicate Melts

Hideaki SUITO, Masayasu OHTANI

pp. 917-925

Abstract

Galvanostatic polarization measurements were made at 1350°C on a solid platinum-molten alkali silicate interface. From the analysis of the initial dccay up to 80μsec of the overpotential-time curves, the exchange current density has been determined as a function of the M₂O/SiO₂ molar ratio (M=Li, Na and K) and the oxygen partial pressure. (P_O2=1, 0.21 and 0.03atm) The exchange current density has been found to increase with increasing the M₂O/SiO₂ molar ratio and the oxygen partial pressure. Subsequent decay up to 1msec, 10msec, 100msec, 1sec and 5sec- of the overpotential curves has been studied on the assumption that mass-transfer controls the rate of the oxygen discharge reaction. At the constant M₂O/SiO₂ molar ratio, the slope in the overpotential-square root of time plots has been shown to be inversely proportional to the square root of an oxygen pressure. It was also found that the product of the solubility of and the square root of the diffusivity of soluble oxygen and oxygen ion increases with the increase of the M₂O/SiO₂ molar ratio. The product also increases with changing M₂O from Li₂O to Na₂O to K₂O in this order at a constant M₂O/SiO₂ molar ratio.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Galvanostatic Polarization Measurements on a Soid Platinum-Alkali Silicate Melts

Bibtex

Ris

Interdiffusion and Reaction Diffusion in the Fe-Mo System

Kiyohiko NOHARA, Ken-ichi HIRANO

pp. 926-935

Abstract

Interdiffusion and reaction diffusion in the Fe-Mo system were studied in the temperature range between 800 and 1400°C with diffusion couples of pure Fe/pure Mo and pure Fe/Mo alloy.
Formation of three intermediate phases, ∈, R, and σ, were observed in the diffusion zone. However, the Laves phase, λ, could not be found. The layers of three intermediate phases were found to grow according to the parabolic law showing that the growth was by a diffusion process. The interdiffusion coefficients in the intermediate phases were also determined applying Heumann's method. Quantitative correlation between the activation energy for the layer growth determined by the temperature dependence of the rate constant and that of the interdiffusion was found in each phase.
The interdiffusion coefficient in the α phase determined by the Matano analysis was found to decrease with increasing Mo content, at each temperature. The interdiffusion coefficient in the γ phase, Dγ, could be estimated from the interdiffusion coefficient in the α phase and the growth rate of the α phase and it was found that the temperature dependence of Dγ showed the Arrhenius relationship.
The Kirkendall effect was observed in the diffusion couple of Fe-3.0at%Mo and Fe-7.0at%Mo alloys in the temperature range between 1100 and 1300°C, and it was found that the markers moved toward the Mo rich side. Deviation of the γ-loop determined by the concentration distribution in the diffusion couple from that in the equilibrium phase diagram was observed and turned out difficult to be quantitatively investigated at the present stage.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Interdiffusion and Reaction Diffusion in the Fe-Mo System

Bibtex

Ris

Dendrite Arm Spacing in Iron-Carbon-Chromium Alloys

Taira OKAMOTO, Shusuke MATSUO, Katsuhiko KISHITAKE

pp. 936-942

Abstract

Dendrite arm spacings in unidirectionally solidified iron-carbon-chromium alloys with chromium and carbon less than 15% and 2%, respectively, were measured and discussed on the basis of the results for ironbase binary alloy described in the previous paper. The results obtained are as follows:
1) Primary and secondary arm spacings in the iron-carbon-chromium alloys are inversely proportional to the square root and the cube one, respectively, of cooling rate in similar way as those in iron-base binary alloys.
2) Primary arm spacings in the alloys which form γ-iron as the primary phase decrease with increasing the chromium content or with decreasing the carbon content, With the carbon content of the alloys less than the critical value below which the primary phase becomes δ-iron, the arm spacing becomes much larger than not would be expected from the extrapolation of data above the critical value.
3) Secondary arm spacings decrease with increasing the carbon content or chromium content. They arc discontinuously varied by the change from δ-iron to γ-iron in the primary phase.
4) It is shown that a parameter proposed in iron-base binary alloys as expressing the effect of alloying elements on dendrite arm spacings is determined from the ternary phase diagram and is also applicable to the ternary alloy.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Dendrite Arm Spacing in Iron-Carbon-Chromium Alloys

Bibtex

Ris

Sulfur Equilibria in Molten Fe-La-S, Fe-Ti-S and Fe-Zr-S Systems

Akio EJIMA, Ken-ichiro SUZUKI, Nobuo HARADA, Koji SANBONGI

pp. 943-952

Abstract

Sulfur equilibria in molten Fe-La-S, Fe-Ti-S and Fe-Zr-S systems are determined by melting Fe-S alloy in an induction furnace with subsequent addition of desulfurizing element, La, Ti, and Zr under deoxidized argon. The possible reaction betweem the desulfurizing element in liquid iron and crucible material was prevented by lining of equilibrium sulfide (3mm thick) on alumina crucible in which the melt was contained. Activity of oxygen in the melt and total oxygen content were lowered by adding about 0.3% Al prior to the addition of the desulfurizing element, so that oxysulfide formation in the melt might be suppressed.
The results obtained are summarized as follows:
1) Equilibrium constants for desulfurizing reactions with LaS (s), TiS (s), or Zr₃S₄ (s) as the equilibrium phase are determined to be
log K_La=-26000/T+8.9₈
log K_Ti=-8000/T+4.0₂
log K_Zr=-44100/T+19.₅
for T from 1818 to 1923K.
2) Interaction parameters between the desulfurizing element and S are given by
e ^(La) _s=-18.3 (1883K), e ^(Ti) _s=-0, 18 (1873K), e ^(Zr) _s=-0.22 (1873K)
3) Standard free energy change, ΔG°, for the reaction; La (1) =La is derived as
ΔG°=30100-22.6T
and that for TiS (s) and Zr₃S₄ (s) formation is also determined at 1873K to be -57 and -227kcal/mol, respectively.
4) Applicability of the equation, given by SAKANO and SANO for the evaluation of ∈ ^(j) _O, to that of ∈ ^(j) _s in molten iron is examined, using the values of ∈ ^(La) _s, ∈ ^(Ti) _s, ∈ ^(Zr) _s and ∈ ^(Ce) _s determined by the authors, and verified to be valid even in the case of ∈ ^(J) _s.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Sulfur Equilibria in Molten Fe-La-S, Fe-Ti-S and Fe-Zr-S Systems

Bibtex

Ris

A Calorimetric Study of Heats of Mixing of Nickel or Cobalt Alloys

Yasutaka IGUCHI, Yasuyuki TOZAKI, Mitsuo KAKIZAKI, Shiro BAN-YA, Tasuku FUWA

pp. 953-961

Abstract

The isothermal calorimeter previously reported was improved particularly by changing the heating system to the molybdenum winding heater. These improvements made it possible to measure the heats of mixing of nickel or cobalt alloys at 1450 to 1550°C under a controlled gas atmosphere.
It was also observed that so called “Newton's law of cooling” was applicable to the calibration of the calorimeter at such higher temperature.
The maximum heats of mixing of the Ni-Cu and the Co-Cu systems were 1035 and 2310 cal/g·atom, respectively. And the Ni-Cu system is considered to be the regular solution. The heats of mixing of theNi-Co system were very small, and this system could be treated as an ideal solution.
The errors of those heats of mixing were estimated approximately as ±15%.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

A Calorimetric Study of Heats of Mixing of Nickel or Cobalt Alloys

Bibtex

Ris

Fatigue Strength of Steels Composed of Two Phases

Yo TOMOTA, Nobuyoshi TACHIBANA, Kikujiro TANABE, Koshiro KUROKI

pp. 962-970

Abstract

Fatigue strength of two-uctile-phase steels is studied in order to clarify the effects of volume fraction of the harder phase (f), C^*-value (=0.2% proof stress of the harder phase /0.2% proof stress of the softer phase), and shape of the harder phase grains on the fatigue strength. The alloys used are classified into three groups with various values of f: Fe-Cr-Ni alloys composed of austenite and ferrite (A), Fe-C steels composed of ferrite and martensite (C), and Fe-Cr-Ni alloys composed of austenite and martensite (D). The C^*-value is changed by aging (A) or tempering (C). The mean grain size (d) of each alloy is adjusted to be nearly the same by heat treatment. The main results obtained are as follows:
(1) When the shapes of grains (both of the harder phase and of the softer phase) are nearly spherical, the effects of f, C^*-value, and d are as follows.
(a) Effects of f when d is constant; Three regions are observed in the relation of the endurance limit (σW) vs f. Namely, according to an increase in f, σW hardly changes at first (lst region), then increases rapidly (2nd region) and again hardly changes (3rd region).
(b) Effect of C^*-value; When alloys belong to the 1st region, σW is independent of C^*-value in the case of an alloy of the 2nd or 3rd region.
(c) Effect of d; σW is estimated to increase with decreasing d, which plays an important role to obtain a two-phase alloy with excellent fatigue strength.
(2) In case of thin plate-like grains of the harder phase, σW increases with an increase in f even if f is small. That is, the range of each region mentianed above changes by the shape of the harder phase.
(3) The above conclusions (1) and (2) are explained qualitatively by the observed preferential path of fatigue crack growth.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Fatigue Strength of Steels Composed of Two Phases

Bibtex

Ris

Precipitation of Carbides and Nitrides Observed by Thermoelectric Power Measurement in Low Carbon Aluminum Killed Steel

Hideo ABE, Takeshi SUZUKI, Osamu FURUKIMI

pp. 971-979

Abstract

Ghanges in thermoelectric power and electrical resistivity during 10min/20°C isochranal annealing were observed in several quenched or cold rolled specimens of low carbon aluminum-killed steel. Annealing stages corresponding to the precipitation of metastable carbide, cementite, iron-nitride and aluminum-nitride could be followed by the thermoelectric power measurement with fairly good accuracy. In the quench-aging of the steel, a weak unidentified peak was detected around 380°C, which could not be found by the resistivity measurement. From a discussion on the abnormally high value of the ratio of thermoelectric power increment to resistivity decrement (-dS/dρ), it was postulated that the aging on heating from room temperature to-100°C immediately after cold rolling (70% reduction) was associated with dissociation of point defectnitrogen complexes to form AlN molecules. The value of (-dS/dρ) for the precipitation of iron-nitrides was estimated to be -1.8V·Ω^-1cm^-1deg^-1. The 400-480°C stage in the isochronal annealing of the cold rolled specimen could be identified as due to pre-precipitation clustering of AlN, since the (-dS/dρ) value was approximately the same as that of the precipitation of hexagonal AlN (-0.47V·Ω^-1cm^-1deg^-1).

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Precipitation of Carbides and Nitrides Observed by Thermoelectric Power Measurement in Low Carbon Aluminum Killed Steel

Bibtex

Ris

Effect of Substitutional Solid Solution Elements (W, Mo, Al, Mn and Cu) on the High Temperature Strength of 17Cr-14Ni Austenitic Steel

Takashi MATSUO, Takayuki SHINODA, Ryohei TANAKA

pp. 980-989

Abstract

The effect of single addition of such solid solution elements as W, Mo, Al, Mn and Cu on the creep and creep rupture properties of carbon free 17Cr-14Ni steel were studied at 700°C.
The steady state creep rate, ∈_s, was analyzed in terms of three factors, stacking fault energy, γ, elastic modulus, E, and diffusion constant, D, using a Sherby-Barrett equation: ∈_s=Aγm (σ/E) ⁿD, where A and σ are a constant and the applied stress, respectively, and m and n are fixed to 1 and 7, respectively, for application to the austenitic steels.
Since it was found that the effect of solute elements on the steady state creep rate of 17Cr-14Ni steels can not be analyzed only by the above three factors, the size effect of solute atoms was proposed as a fourth and important factor.
As a certification of this assumption, the linear relation between the lattice distortion induced by solute elements and logarithmic steady state creep rate was found experimentally.
It was concluded from these results that the size effect of solute atoms is the most important strengthening factor controlling the steady state creep rate of austenitic heat resisting steels.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Effect of Substitutional Solid Solution Elements (W, Mo, Al, Mn and Cu) on the High Temperature Strength of 17Cr-14Ni Austenitic Steel

Bibtex

Ris

The Effect of Si on the Mo-Type High Speed Tool Steel

Fijirô ISHIKAWA, Kôichi SUDÔ

pp. 990-999

Abstract

Rod-shaped primary carbides, M₂C, which were aligned with rolling direction are frequently observed in high-carbon, high-molybdenum high-speed tool steel. It was known that the phase disappeared by silicon addition to the steel. Therefore, the effect of silicon on the carbide transformation and the heat treatment characteristics in AISI M7 was studied under various nitrogen content.
The results obtained are as follows:
(1) The carbide precipitated at the eutectic reaction was M₂C and not M₆C, and had a plate-like morphology.
(2) Silicon in the matrix accelerated the transformation of M₂C to M₆C by entering into M₂C during heating the ingot above 640-700°C. Considerable primary carbides were retained as M₂C even after hot working, when the silicon content in the steel was little.
(3) It was considered that the retained M₂C, having the plate-like morphology, became reorientated parallel to the hot working direction, without spheroidization, and therefore was microscopically observed as rod-shaped carbide.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

The Effect of Si on the Mo-Type High Speed Tool Steel

Bibtex

Ris

Microstructures and Mechanical Properties of Sintered, Hot-Forged High-Carbon High-Molybdenum and High-Carbon High-Chromium Tool Steels

Hisashi ANDO, Akira OKAYAMA, Ko SOENO

pp. 1000-1007

Abstract

Steel powders containing (2.28, 2.65) %C-(13.23, 17.32) %Mo-3.9%Cr-7%W-3.5%V-9.4%Co and (3.12, 3.61) %C-(12.69, 12.31) %Cr-1.0%Mo have been produced by water-atomization. Fully densified steel bars have also been made by sintering in a vacuum, hot-extrusion and hot-forging. Microstructures and mechanical properties of the dense steels have been investigated as a function of heat treatment.
In the high-carbon and high-molybdenum steels, fine nodules of M₆C (Mo, W-rich) type carbide and fine rods of M₂C (Mo-rich) type carbids are uniformly distributed. It is also observed that fine nodules of M₇ C₃ (Cr-rich) type carbides are uniformly distributed in the high-carbon and high-chromium steels. High hardness is easily obtainable by heat treatment. Grinding is also easy because of the uniform distribution of the fine carbides. However, transverse rupture strength and notch toughness are relatively low. Wear resistance of the steels is improved by increasing the diameters of the unsoluble carbides. Strength and toughness may be improved by sufficient reducing of the oxygen contents of the dense steels.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Microstructures and Mechanical Properties of Sintered, Hot-Forged High-Carbon High-Molybdenum and High-Carbon High-Chromium Tool Steels

Bibtex

Ris

Boiling Phenomena and Effects of Water Temperature on Heat Transfer in the Process of Immersion Cooling of a Heated Steel Plate

Masashi MITSUTSUKA, Keiji FUKUDA

pp. 1008-1015

Abstract

In order to apply an immersion cooling to the manufacturing process of iron and steel, it is necessary to clarify the characteristics of the immersion method. As the first step, the boiling phenomena and cooling abilities were investigated for a steel plate of about 930°C immersed into the still water of 20-90°C. The results obtained are as follows:
(1) When a plate is immersed, nucleate boiling begins from the edge of a plate and subsequently travels to the center.
(2) When a plate is horizontally immersed, the lower surface of the plate is covered with stable vapor film. Consequently, the released heat from the lower surface is smaller than the upper.
(3) When a 28×220×220mm³ plate is vertically immersed, the heat transfer coefficient α between the plate and water is a function of surface temperature θ_s and water temperature θ_w. These are related by the following equation. Here, A, B, and K are constants which depend onθ_s.
α= [10 (A+B·θ_s)] · [1-K· (θ_w-26)]
[α]: kcal/mm²·h·deg, [θ_s, θ_w]: °C
(4) α reaches a maximum in the θ_s range from 200 to 300°C and its value is 7-10×10³kcal/mm²·h·deg in the θ_w range from 20 to 30°C.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Boiling Phenomena and Effects of Water Temperature on Heat Transfer in the Process of Immersion Cooling of a Heated Steel Plate

Bibtex

Ris

Effect of Metallurgical Factors of Low Carbon Steel Sheets on Stress Corrosion Cracking in Methanol Solution

Kameo MATSUKURA, Kazuaki SATO

pp. 1016-1025

Abstract

Studies were carried out on the effects of chemical composition, manufacturing condition and heat-treatment of low carbon rimmed hot rolled steel sheets on susceptibility to stress corrosion cracking in 60°C reagent methanol containing 0.01 wt% formic acid and 0.1 wt% water by using a constant strain rate test. Similar studies were done for various cold rolled steel sheets and pure iron sheets.
Carbon content (0.001-0.12wt%) did not affect the susceptibility. Chromium additions (0.04 wt% and over) increased the resistance to cracking, whereas temper rolling and lower coiling temperature of hot rolled sheets decreased the resistance. Also the higher cooling rate of steel sheet cooled from austenite region and low temperature heat treatments (100-300°C×5h) decreased the resistance.
The effect of strain rate on the SCC susceptibility of a bent or straight form specimen in the methanol solution was investigated. It was found that the both specinlens showed SCC at the strain rate ∈=10^-4-10^-5 sec^-1 and the cracking depth observed in the bent specimen (max 0.28mm) was greater than that in the straight specimen (max 0.05mm).
The same SCC as that in the methanol solution was observed in reagent ethanol (C₂H₅OH), methyl cellosolve (H₃COC₂H₄OH), and ethylene glycol (C₂H₄ (OH) ₂) containing formic or acetic acid and water.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Effect of Metallurgical Factors of Low Carbon Steel Sheets on Stress Corrosion Cracking in Methanol Solution

Bibtex

Ris

Determination of Trace Amount of Phosphorus in Iron and Steel by Indirect Atomic Absorption Spectrometric Method Combined with Extraction of Phosphomolybdic Acid

Yasuo INOKUMA, Jyo ENDO

pp. 1026-1034

Abstract

In order to improve the mechanical properties of steel, the low P-containing iron and steel are produced. Therefore, the determination of P in ppm order is required to know exactly 0.00n%, but the application of the conventional method, e. g., JIS G 1214-1969 is very difficult for the reason of its poor sensitivity. Consequently, an atomic-absorption spectrophotometry was studied to determine P in iron and steel by an indirect amplification procedure.
The present method comprised the process that phosphomolybdic acid, H₃PO₄ (MoO₃) ₁₂, was formed in nitric acid solution and selectively extracted away from other heteropoly acids and molybdate reagent into isobutyl acetate, and then the twelve molybdate ions associated with one phospnate ion were determined by direct atomic absorption spectrophotometry in the isobutyl acetate phase.
The interference with Nb, Ta, Ti, V, W and Zr could be avoided by the addition of hydrofluoric acid and adjustment of the nitric acid concentration above 6N.
The coefficients of variation as the reproducibilities of this method were 13.3%, 3.2%, and 1.7% for 0.05μg P/ml, 0.5μg P/ml and 1.0μg P/ml, respectively. Therefore, it was recognized that the diffreence of 0.001% in phosphorus content less than 0.01% could be judged certainly and phosphorus of ppm order in iron and steel could be exactly determined.

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Determination of Trace Amount of Phosphorus in Iron and Steel by Indirect Atomic Absorption Spectrometric Method Combined with Extraction of Phosphomolybdic Acid

Bibtex

Ris

Extension of Ergun Equation to Two Dimensional Flow in Packed Beds

Kazuo ARAKI, Akira MORIYAMA

pp. 1035-1036

Abstract

Two kinds of the extension of Ergun equation hitherto used to two dimensional flow system; grad P=-(f₁+f₂|_u|) _u (type I) and ∂P/∂x=-(f₁+f₂|u_x|) u_x, ∂P/∂y=-(f₁+f₂|u_y|) u_y (type II), were critically examined on their transformability of the coordinate system, their consistency in the direction along a streamline with one dimensional Ergun equation and orthogonality between isobars and streamlines.
Conclusively, the expanded type I of Ergun equation must be applied to two demensional flow system of the packed beds.

Readers Who Read This Article Also Read

Gas Flow through Packed and Moving Beds with Layered Burdens

Tetsu-to-Hagané Vol.63(1977), No.9

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Extension of Ergun Equation to Two Dimensional Flow in Packed Beds

Bibtex

Ris

M₅B₃-Type Boride in Nickel-Base Superalloy

Yutaka KOIZUMI, Michio YAMAZAKI, Hiroshi HARADA

pp. 1037-1039

Abstract

No boride other than of M₃B₂-type has been reported to be present in nickel-base superalloys, and most of the M's in M₃B₂ are considered, for PHACOMP, to be molybdenum or tungsten.
However, tungsten-rich M₃B₂ is not probable to form in some recent nickel-base alloys containing tungsten instead of molybdenum, since the W-B system does not have a boride of this type.
In this experiment, high-boron cobalt-free Mar-M200 type alloys, containing tungsten but free from molybdenum, were examined to determine the type of boride. X-ray and chemical analyses of the residue indicated that the boride in the alloys was M₅B₃ which was considered to be formed by substituting a portion of chromium atoms in Cr₅B₃ by tungsten atoms, i. e. (Cr, W) ₅B₃. W₅B₃, however, is not present in the W-B system.

Readers Who Read This Article Also Read

Creep Rupture Properties and Weldability of 18Cr-15W-Ni Base Superalloy

Tetsu-to-Hagané Vol.65(1979), No.7

State Analysis for Cr-rich (bcc) Phase and Carbides in High Chromium Nickel Base Austenitic Alloys

Tetsu-to-Hagané Vol.77(1991), No.4

Lattice Constants of γ and γ″ Phases and γ″/γ Lattice Mismatches in Ni-15Cr-8Fe-6Nb Alloy

Tetsu-to-Hagané Vol.80(1994), No.1

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

M₅B₃-Type Boride in Nickel-Base Superalloy

Bibtex

Ris

Materials Trends in Geothermal Power Plants

Hiroshi YUSHIDA

pp. 1040-1052

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Materials Trends in Geothermal Power Plants

Bibtex

Ris

技術貿易の背景を考える

佐野幸吉

pp. 1053-1055

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

技術貿易の背景を考える

Bibtex

Ris

Some Impressions in West Germany

Michio INOUYE

pp. 1056-1060

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

Some Impressions in West Germany

Bibtex

Ris

抄録

天辰正義, 川上正博, 高橋恒雄, 玉井啓三, 上正原和典, 菊池実, 小倉康嗣, 石川準, 姫野誠, 松井建造, 田中徹, 関勇一, 武田修一, 小池一幸

pp. 1061-1066

Bookmark

Detail

PDF Download

Share it with SNS

Article Title

抄録

Bibtex

Ris

Article Access Ranking

26 Mar. (Last 30 Days)

Automatic Ultrasonic Testing of Non-metallic Inclusions Detectable with Size of Several Tens of Micrometers Using a Double Probe Technique along the Longitudinal Axis of a Small-diameter Bar

ISIJ International Vol.61(2021), No.1
A Review on the Humic Substances in Pelletizing Binders: Preparation, Interaction Mechanism, and Process Characteristics

ISIJ International Vol.63(2023), No.2
Austenite reversion behavior of maraging steel additive-manufactured by laser powder bed fusion

ISIJ International Advance Publication
Effect of Nb on grain growth behavior in the heat affected zone of linepipe steels

ISIJ International Advance Publication
Current Status and Future Scope of Phase Diagram Studies

ISIJ International Vol.63(2023), No.3
Thermodynamic formation and three-dimensional characterization of MnS-MgAl₂O₄ composite inclusions in steel

ISIJ International Advance Publication
3D transient heat transfer simulation and optimization for initial stage of steel continuous casting process

ISIJ International Advance Publication
Heat Conduction through Different Slag Layers in Mold. Thermal Conductivity Measurement of Commercial Mold Fluxes

ISIJ International Vol.63(2023), No.2
Preface to the Special Issue “Fundamental Researches and its Applications for Strengthening in High Temperature Materials”

Tetsu-to-Hagané Vol.109(2023), No.3
Phase-field Modeling and Simulation of Solid-state Phase Transformations in Steels

ISIJ International Vol.63(2023), No.3

You can use this feature after you logged into the site.
Please click the button below.

Tetsu-to-Hagané Vol. 63 (1977), No. 6

Search Phrase Ranking

blast furnace

test

tundish

continuous casting

seaweed

inclusions

isij

hydrogen trapping

process

spring steel

Tetsu-to-Hagané Vol. 63 (1977), No. 6

フオス随感

Share it with SNS

Model Experiment on the Permeability of Gas in the Shaft of a Blast Furnace

Share it with SNS

Influence of Pressure in Surrounding Atmosphere on the Cavity Formation by Gas Jet

Share it with SNS

Galvanostatic Polarization Measurements on a Soid Platinum-Alkali Silicate Melts

Share it with SNS

Interdiffusion and Reaction Diffusion in the Fe-Mo System

Share it with SNS

Dendrite Arm Spacing in Iron-Carbon-Chromium Alloys

Share it with SNS

Sulfur Equilibria in Molten Fe-La-S, Fe-Ti-S and Fe-Zr-S Systems

Share it with SNS

A Calorimetric Study of Heats of Mixing of Nickel or Cobalt Alloys

Share it with SNS

Fatigue Strength of Steels Composed of Two Phases

Share it with SNS

Precipitation of Carbides and Nitrides Observed by Thermoelectric Power Measurement in Low Carbon Aluminum Killed Steel

Share it with SNS

Effect of Substitutional Solid Solution Elements (W, Mo, Al, Mn and Cu) on the High Temperature Strength of 17Cr-14Ni Austenitic Steel

Share it with SNS

The Effect of Si on the Mo-Type High Speed Tool Steel

Share it with SNS

Microstructures and Mechanical Properties of Sintered, Hot-Forged High-Carbon High-Molybdenum and High-Carbon High-Chromium Tool Steels

Share it with SNS

Boiling Phenomena and Effects of Water Temperature on Heat Transfer in the Process of Immersion Cooling of a Heated Steel Plate

Share it with SNS

Effect of Metallurgical Factors of Low Carbon Steel Sheets on Stress Corrosion Cracking in Methanol Solution

Share it with SNS

Determination of Trace Amount of Phosphorus in Iron and Steel by Indirect Atomic Absorption Spectrometric Method Combined with Extraction of Phosphomolybdic Acid

Share it with SNS

Extension of Ergun Equation to Two Dimensional Flow in Packed Beds

Share it with SNS

M5B3-Type Boride in Nickel-Base Superalloy

Share it with SNS

Materials Trends in Geothermal Power Plants

Share it with SNS

技術貿易の背景を考える

Share it with SNS

Some Impressions in West Germany

Share it with SNS

抄録

Share it with SNS

Article Access Ranking

Automatic Ultrasonic Testing of Non-metallic Inclusions Detectable with Size of Several Tens of Micrometers Using a Double Probe Technique along the Longitudinal Axis of a Small-diameter Bar

A Review on the Humic Substances in Pelletizing Binders: Preparation, Interaction Mechanism, and Process Characteristics

Austenite reversion behavior of maraging steel additive-manufactured by laser powder bed fusion

Effect of Nb on grain growth behavior in the heat affected zone of linepipe steels

Current Status and Future Scope of Phase Diagram Studies

Thermodynamic formation and three-dimensional characterization of MnS-MgAl2O4 composite inclusions in steel

3D transient heat transfer simulation and optimization for initial stage of steel continuous casting process

Heat Conduction through Different Slag Layers in Mold. Thermal Conductivity Measurement of Commercial Mold Fluxes

Preface to the Special Issue “Fundamental Researches and its Applications for Strengthening in High Temperature Materials”

Phase-field Modeling and Simulation of Solid-state Phase Transformations in Steels

Advanced Search

M₅B₃-Type Boride in Nickel-Base Superalloy

Thermodynamic formation and three-dimensional characterization of MnS-MgAl₂O₄ composite inclusions in steel