MODELING OF AUSTENITIC GRAIN GROWTH OF 21-4N STEEL

被引：0
|
作者：
Ji, H. C. [1 ,2 ,3 ]
Li, Y. M. [1 ]
Ma, C. J. [1 ]
Long, H. Y. [1 ]
Liu, J. P. [3 ]
Wang, B. Y. [3 ]
机构：
[1] North China Univ Sci & Technol, Coll Mech Engn, Tangshan, Hebei, Peoples R China
[2] Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing, Peoples R China
来源：
METALURGIJA | 2019年 / 58卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
alloy steel 21-4N; grain growth model; microstructure; carbide pinning; grain boundary migration; LOW-ALLOYED STEELS; EVOLUTION;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of grain growth on 21-4N heat resistant steel was studied by static grain growth test. The experimental results show that the temperature inhibits carbide grain growth is between 1000-1120 degrees C. When heat preservation time is over 40 min, the driving force of grain boundary is balanced with binding force of carbide nail, grain size will not grow up. There is no limit of grain size due to no pinning effect of carbides when the temperature is above 1180 degrees C. Based on the theory of grain boundary migration, the grain growth model of 21-4N heat-resistant steel was established, and the relationship between the average grain size and the time of heat preservation at different temperatures was predicted.
引用
收藏
页码：83 / 86
页数：4
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