Effect of strain rate on twinning in a Zr alloy

被引：46

作者：

Kapoor, Rajeev ^{[1
]}

Sarkar, Apu ^{[1
]}

Singh, Jaiveer ^{[2
]}

Samajdar, Indradev ^{[2
]}

Raabe, Dierk ^{[3
]}

机构：

[1] Bhabha Atom Res Ctr, Mech Met Div, Bombay 400085, Maharashtra, India

[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India

[3] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany

来源：

SCRIPTA MATERIALIA | 2014年 / 74卷

关键词：

Zr alloy; Tensile twin; High strain rate; Strain hardening; COMMERCIALLY PURE TITANIUM; ROOM-TEMPERATURE; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; PLASTIC-DEFORMATION; CONSTITUTIVE LAW; ZIRCONIUM; TEXTURE; MICROSTRUCTURE; DISLOCATIONS;

D O I：

10.1016/j.scriptamat.2013.10.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zr-1Nb alloy uniaxially compressed at room temperature at 10(-2) and 10(3) s(-1) exhibited twinning and a three-stage strain-hardening behavior. At 10(3) s(-1) the twin fraction initially increased to 0.3, decreasing to 0.02 at higher strains. Despite the difference in texture at intermediate strains, the final texture was similar at both strain rates. The increasing strain-hardening rate in the second stage was attributed to strengthening from grain boundaries and dislocations, and softening from reorientation due to twinning. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：72 / 75

页数：4

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