Solubility product and precipitation of TaC in Fe-8Cr-2W steel

被引：36
作者：
Tamura, M [1 ]
Shinozuka, K
Masamura, K
Ishizawa, K
Sugimoto, S
机构：
[1] Natl Def Acad, Dept Mat Sci, Yokosuka, Kanagawa 239, Japan
[2] NKK Corp, Kawasaki Ku, Kawasaki, Kanagawa 210, Japan
[3] Kokan Keisoku Co, Kawasaki Ku, Kawasaki, Kanagawa 210, Japan
来源：
JOURNAL OF NUCLEAR MATERIALS | 1998年 / 258卷
关键词：
D O I：
10.1016/S0022-3115(98)00151-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The precipitation behavior of TaC in austenite was studied to improve mechanical properties of a reduced-activation steel, Type F-82H tan 8%Cr-2%W steel). The solubility product of TaC in austenite of Type F-82H was determined as function of temperature and was 70% larger than that of gamma-Fe. On metallurgical examination, the following was found: (1) The nucleation and growth of austenite grains and/or the reverse alpha --> gamma transformation accelerated the precipitation of fine particles of TaC, and the fine precipitates suppressed the further growth of the austenite grains. (2) When homogenizing at 1523 K previously, coarse austenitic grains were observed by heating at 1223-1323 K as compared with the grains after directly heating of the hot-rolled plate, while the solubility product itself was roughly independent of the homogenizing treatment. (C) 1998 Elsevier Science B.V. All rights reserved.
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页码：1158 / 1162
页数：5
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