Microstructure Characteristics of an Fe-Mn-C TWIP Steel After Deformation

被引：24
作者：
Dai Yong-juan [1 ]
Tang Di [2 ]
Mi Zhen-li [2 ]
Lue Jian-chong [2 ]
机构：
[1] Univ Sci & Technol Beijing, Natl Engn Res Ctr Adv Rolling Technol, Beijing 100083, Peoples R China
[2] Hebei Univ Sci & Technol, Sch Mat Sci & Engn, Shijiazhuang 050018, Hebei, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2010年 / 17卷 / 09期
基金：
中国国家自然科学基金;
关键词：
planar glide; deformed twinning; stack fault energy; ductile fracture; AUSTENITIC STEEL; BEHAVIOR; PLASTICITY; MODEL; TEXTURE;
D O I：
10.1016/S1006-706X(10)60142-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructure characteristics of an Fe-Mn-C TWIP steel after deformation are investigated. The results show that the hot-rolled, cold-rolled and then annealed sample of the Fe-Mn-C TWIP steel has excellent mechanical properties, and the true stress-true strain curve from tension tests exhibits repeated serrations. The deformed microstructure exhibits the typical planar glide characteristics such as no cell formation, dislocation pile-ups on a single slip plane, mechanical twins and stacking faults. There are equiaxial and deep dimple structures in the fractograph, indicative of a ductile fracture. Microcracks initiate from inclusions and twin-twin intersections. Deformation and fracture processes are the formation, growth and coalescence of microvoids.
引用
收藏
页码：53 / 59
页数：7
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