Solubility product of VN in austenite of high Cr heat resistant steel

被引：12
作者：
Tamura, M [1 ]
Iida, H [1 ]
Esaka, H [1 ]
Shinozuka, K [1 ]
机构：
[1] Natl Def Acad, Grad Sch, Yokosuka, Kanagawa 2398686, Japan
来源：
ISIJ INTERNATIONAL | 2003年 / 43卷 / 11期
关键词：
precipitation; MX; thermodynamics; activity coefficient;
D O I：
10.2355/isijinternational.43.1807
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Dissolved V in austenite of 7%Cr-0.4%V-0.09%N steel (hereinafter, % means mass%) was measured and the solubility product of VN was determined as follows: log([%V][%N])=4.38-8436/T where T is the absolute temperature in K. The solubility product obtained is 3 to 5 times larger than those in the literature and about one order larger than that for iron. The decrease in the activity coefficient of nitrogen due to the presence of Cr and V in the experimental steel is responsible for the increase in the solubility product of VN.
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页码：1807 / 1813
页数：7
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