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

页码：670 / 674

页数：5

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