Microstructural effects on adiabatic shear band formation

被引：106
作者：
Osovski, S. [1 ]
Rittel, D. [1 ]
Landau, P. [2 ]
Venkert, A. [2 ]
机构：
[1] Technion Israel Inst Technol, Fac Mech Engn, IL-32000 Haifa, Israel
[2] Nucl Res Ctr Negev, Dept Phys, IL-84190 Beer Sheva, Israel
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 01期
基金：
以色列科学基金会;
关键词：
Shear Micromechanical modeling; Twinning; Dynamic recrystallization; Transmission electron microscopy (TEM); COMPRESSION SPECIMEN; NUMERICAL VALIDATION; STRAIN; METALS; ENERGY; BEHAVIOR; KINETICS; STEEL; WORK; HEAT;
D O I：
10.1016/j.scriptamat.2011.09.014
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dynamic recrystallization (DRX), driven by the dynamic stored energy of cold work, promotes shear localization. However, the influence of twinning remains to be investigated. We consider two model materials under impact, pure Titanium and a Ti6Al4V alloy, for which the extent of twinning and DRX differs vastly. A grain-scale finite element model shows that twinning delays DRX and consequently strain localization. Moreover, the calculated temperature elevations (local and global) remain very modest until the onset of failure. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：9 / 12
页数：4
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