Enhanced impact toughness of magnesium alloy by grain refinement

被引：76

作者：

Liao, Jinsun ^{[1
]}

Hotta, Makoto ^{[1
]}

Kaneko, Kantaro ^{[1
]}

Kondoh, Katsuyoshi ^{[2
]}

机构：

[1] Kurimoto Ltd, R&D Dept, Osaka 5590021, Japan

[2] Osaka Univ, JWRI, Osaka 5670047, Japan

来源：

SCRIPTA MATERIALIA | 2009年 / 61卷 / 02期

关键词：

Mg alloy; Impact toughness; Texture; Fine-grained microstructure; Dynamic plastic deformation; ROOM-TEMPERATURE; MECHANICAL-PROPERTIES; TEXTURED MAGNESIUM; MG ALLOY; DEFORMATION; MICROSTRUCTURE; MG-3AL-1ZN; EXTRUSION; DUCTILITY; SIZE;

D O I：

10.1016/j.scriptamat.2009.03.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The impact toughness of Mg-3Al-Zn alloy was systematically investigated with the focus on the effect of grain size. The impact toughness is greatly improved as the mean grain size is reduced to less than 3 pin, because the dynamic strength and dynamic plastic deformation ability are greatly enhanced. The superior dynamic strength of fine-grained samples may be explained in terms of grain size effect, and the high dynamic plastic deformation ability probably results from the suppression of twinning. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：208 / 211

页数：4

共 18 条

[1] Enhanced ductility in strongly textured magnesium produced by equal channel angular processing [J].