Strain hardening behaviour and the Taylor factor of pure magnesium

被引：233

作者：

Caceres, C. H. ^{[1
]}

Lukac, P. ^{[2
]}

机构：

[1] Univ Queensland, Sch Engn, ARC Ctr Excellence Design Light Met Mat Engn, Brisbane, Qld 4072, Australia

[2] Charles Univ Prague, Dept Phys Mat, Prague 12116 2, Czech Republic

来源：

PHILOSOPHICAL MAGAZINE | 2008年 / 88卷 / 07期

关键词：

magnesium; dislocations; forest hardening; Taylor factor; Hall-Petch law;

D O I：

10.1080/14786430801968611

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Taylor orientation factors for strain hardening in textured and random polycrystals of magnesium were derived from the ratio of the strain hardening rates of polycrystals to that of single crystals deforming by equivalent polyslip. For polycrystals with textures that inhibit basal and prismatic slip while favouring pyramidal polyslip, the Taylor factor is estimated to be between 2.1 and 2.5, increasing to about 4.5 for randomly textured polycrystals. The micromechanics of strain hardening in polycrystals are discussed.

引用

页码：977 / 989

页数：13

共 49 条

[1] Validating a polycrystal model for the elastoplastic response of magnesium alloy AZ31 using in situ neutron diffraction [J].