Microstructure evolution mechanism in adiabatic shear band in TA2

被引：0
|
作者：
Yang, Y [1 ]
Xiong, J
Yang, XY
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Univ Electrocommun, Dept Mech Engn & Intelligent Syst, Chofu, Tokyo 182, Japan
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2004年 / 14卷 / 04期
关键词：
adiabatic shear band; microstructure evolution; dynamic recrystallization;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructure evolution mechanism in adiabatic shear band in commercial pure titanium (TA2) at high strain rates(gamma approximate to 10(5) - 10(6)/s) were studied. The nanosized recrystallized grains (about 50 nm in diameter) within the center of adiabatic shear band (ASB) were observed by means of transmission electronic microscope (TEM). A Rotational Dynamic Recrystallization (RDR) mechanism can explain the microstructure evolution (i. e. nanosized grains were formed within 5 - 10 mus) in ASB. Kinetics calculations indicate that the recrystallized small grains are formed during the deformation and don't undergo significant growth by grain boundary migration after deformation.
引用
收藏
页码：670 / 674
页数：5
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