Dynamic recrystallization in adiabatic shear band in α-titanium

被引：77

作者：

Yang, Y ^{[1
]}

Wang, BF ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 17-18期

基金：

中国国家自然科学基金;

关键词：

microstructure; adiabatic shear bands; kinetics; electron back-scattered diffraction (EBSD); dynamic recrystallization; microtexture;

D O I：

10.1016/j.matlet.2005.12.097

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and microtexture in adiabatic shear bands (ASBs) on the titanium side of the titanium/mild steel explosive cladding interface are investigated by means of OM, SEM/EBSD and TEM. The highly elongated subgrains and fine equiaxed grains with low dislocation density are observed in ASBs. Recrystallization microtextures (28 degrees, 54 degrees, 0 degrees), (60 degrees, 90 degrees, 0 degrees) and (28 degrees, 34 degrees, 30 degrees) are formed within ASBs. According to the misorientation distribution, the grain boundaries in ASBs are geometrical necessary boundaries (GNBs) with high-angles. The temperature in the ASBs is estimated to be about 776 similar to 1142 K (0.4 similar to 0.6 T-m). Based on the rotational dynamic recrystallization (RDR) mechanism, the fine equiaxed grains in the core of ASBs are formed during the deformation processing. These results indicate that the dynamic recrystallization take place in ASBs. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：2198 / 2202

页数：5

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