Effect of oxygen content on impact toughness of a fine-grained magnesium alloy

被引：24

作者：

Liao, Jinsun ^{[1
]}

Hotta, Makoto ^{[1
]}

Koshi, Akihiko ^{[1
]}

机构：

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

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 19-20期

关键词：

Magnesium alloy; Impact toughness; Fine-grained microstructure; Oxygen content; Powder metallurgy; MG ALLOY; BEHAVIOR;

D O I：

10.1016/j.matlet.2011.06.028

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Fine-grained Mg-3Al-Zn alloys with various oxygen contents were prepared by a powder metallurgy process, and the effect of oxygen content on the impact toughness of the fine-grained magnesium alloys was quantitatively investigated. It is found that the impact toughness of magnesium alloys with mean grain size smaller than 3 mu m is extremely high when the oxygen content is less than 400 pp, but it becomes very low as the oxygen content is higher than 1000 ppm. Both magnesium oxides and hydroxides are detected in the magnesium alloys. The presence of excessive magnesium oxides and hydroxides deteriorates the dynamic plastic deformation ability of the fine-grained magnesium alloys. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2995 / 2999

页数：5

共 12 条

[1]

Environmental behavior of magnesium and magnesium alloys [J].