Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2008-12-01

Journal: TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA

Included Journals: Scopus、ISTIC、EI、SCIE

Volume: 18

Issue: ,1

Page Number: S257-S262

ISSN: 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.