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Indexed by:期刊论文

Date of Publication:2008-12-01

Journal:TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA

Included Journals:SCIE、EI、ISTIC、Scopus

Volume:18

Issue:,1

Page Number:S257-S262

ISSN No.:1003-6326

Key Words:magnesium alloy; asymmetric extrusion; rigid-plastic FEM; texture; mechanical properties

Abstract:One-pass asymmetric hot extrusion performed at 673 K was applied to fabricate an AZ31 magnesium alloy sheet. Finite element method (FEM) was used to model the process of asymmetric hot-extrusion. Simulation results indicate that strain rate gradient through the thickness introduced a grain size gradient along the thickness direction and shear deformation during the asymmetric hot-extrusion results in weakened and tilted (0002) basal texture. The asymmetric hot extrusion effectively weakens the basal texture and improves the ductility at room temperature.