Dynamic observation of twin evolution during austenite grain growth in an Fe-C-Mn-Si alloy

被引：11
作者：
Hu, Haijiang [1 ]
Xu, Guang [1 ]
Liu, Feng [1 ]
Wang, Li [2 ]
Zhou, Lixin [3 ]
Xue, Zhengliang [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Key Lab Ferrous Met & Resources Utilizat, Minist Educ, Hubei Collaborat Innovat Ctr Adv Steels, Wuhan 430081, Peoples R China
[2] Baosteel Grp, State Key Lab Dev & Applicat Technol Automot Stee, Shanghai, Peoples R China
[3] Hubei Xinyegang Steel Co Ltd, Daye Special Steel Co Ltd, Huangshi, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2014年 / 105卷 / 04期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Austenite twin; Dynamic observation; Austenite grain; Bainite morphology; CENTERED-CUBIC METALS; ANNEALING TWINS; DEFORMATION TWINS; FCC METALS; CRYSTALS; COPPER;
D O I：
10.3139/146.111037
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
For the first time, investigation of twin evolution during austenite grain growth in an Fe-C-Mn-Si alloy was conducted with in-situ observation using high temperature laser scanning confocal microscopy during austenization. It was found that twins nucleated in austenite grains, some of which might disappear during isothermal holding, even as new twins might nucleate at grain boundaries. In addition, the effects of twins and austenite grains on bainite morphology were also examined. The twins can restrain the growth of bainite sheaves and smaller austenite grains result in shorter bainite laths. The investigation of dynamic evolution of twins and the analysis of the effect of austenite twins on bainite morphology can only be realized by means of in-situ observation.
引用
收藏
页码：337 / 341
页数：5
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