Twinning-induced softening in polycrystalline AM30 Mg alloy at moderate temperatures

被引：273

作者：

Jiang, L ^{[1
]}

Jonas, JJ

Luo, AA

Sachdev, AK

Godet, S

机构：

[1] McGill Univ, Dept Met & Mat Engn, Montreal, PQ H3A 2B2, Canada

[2] Gen Motors, Ctr Res & Dev, Warren, MI 48090 USA

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

twinning; strain hardening; magnesium; EBSD; uniaxial tension;

D O I：

10.1016/j.scriptamat.2005.11.029

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of deformation twinning oil the strain hardening behavior of a polycrystalline AM30 Mg alloy was investigated. At temperatures < 150 degrees C, somewhat unusually, the n value increases with increasing temperature and decreasing strain rate. The softening effect C! induced by double and contraction twinning is responsible for the abnormal strain hardening behavior. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：771 / 775

页数：5

共 12 条

[1] Study of slip mechanisms in a magnesium alloy by neutron diffraction and modeling [J].

Agnew, SR ;

Tomé, CN ;

Brown, DW ;

Holden, TM ;

Vogel, SC .

SCRIPTA MATERIALIA, 2003, 48 (08) :1003-1008

[2] Influence of grain size on the compressive deformation of wrought Mg-3Al-1Zn [J].

Barnett, MR ;

Keshavarz, Z ;

Beer, AG ;

Atwell, D .

ACTA MATERIALIA, 2004, 52 (17) :5093-5103

[3]

DIETER GE, 2003, HDB WORKABILITY PROC, P76

[4]

HARTT WH, 1968, AIME, V242, P1121

[5] Role of deformation twinning on strain hardening in cubic and hexagonal polycrystalline metals [J].

Kalidindi, SR ;

Salem, AA ;

Doherty, RD .

ADVANCED ENGINEERING MATERIALS, 2003, 5 (04) :229-+

[6] Physics and phenomenology of strain hardening: the FCC case [J].

Kocks, UF ;

Mecking, H .

PROGRESS IN MATERIALS SCIENCE, 2003, 48 (03) :171-273

[7] Enhanced deformation mechanisms by anisotropic plasticity in polycrystalline Mg alloys at room temperature [J].

Koike, J .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (07) :1689-1696

[8]

Luo AA, 2004, MAGNESIUM TECHNOLOGY 2004, P79

[9] Microstructures and textures of pure magnesium deformed in plane-strain compression [J].

Nave, MD ;

Barnett, MR .

SCRIPTA MATERIALIA, 2004, 51 (09) :881-885

[10] The influence of stacking fault energy on the mechanical behavior of Cu and Cu-Al alloys: Deformation twinning, work hardening, and dynamic recovery [J].

Rohatgi, A ;

Vecchio, KS ;

Gray, GT .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (01) :135-145

← 1 2 →