Microstructure and mechanical properties of microalloyed and equal channel angular extruded Mg alloys

被引：17

作者：

Dalla Torre, Florian H. ^{[1
]}

Haenzi, Anja C. ^{[1
]}

Uggowitzer, Peter J. ^{[1
]}

机构：

[1] ETH, Dept Mat, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 02期

关键词：

magnesium alloys; extrusion; equal channel angular extrusion (ECAE); ultrafine-grained microstructure; normal grain growth;

D O I：

10.1016/j.scriptamat.2008.03.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

New Mg alloys with a grain size significantly below 10 mu m were developed by a microalloying concept using industrial processing routes. Tensile testing at room temperature (RT) demonstrates superior strength and ductility with low strain anisotropy compared to conventional Mg alloys. Equal channel angular extrusion produces a submicrometer grain size, which further increases strength in compensation to only a small drop in RT ductility. We discuss strain-rate sensitivities and activation volumes as a function of grain size and temperature. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：207 / 210

页数：4

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