Effect of chip size on mechanical property and microstructure of AZ91D magnesium alloy prepared by solid state recycling

被引：61
作者：
Hu, Maoliang [1 ]
Ji, Zesheng [1 ]
Chen, Xiaoyu [1 ]
Zhang, Zhenkao [1 ]
机构：
[1] Harbin Univ Sci & Technol, Coll Mat Sci & Engn, Harbin 150040, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2008年 / 59卷 / 04期
基金：
中国国家自然科学基金;
关键词：
AZ91D magnesium alloy; solid state recycling; chip size; mechanical property; microstructure;
D O I：
10.1016/j.matchar.2007.02.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, different kinds of AZ91D magnesium alloy chips were prepared by solid state recycling. Mechanical properties and microstructures of the recycled specimens were investigated. Various microstructural analyses were performed using the techniques of optical microscopy, scanning electron microscopy and oxygen-nitrogen analysis. Microstructural observations revealed that all the recycled specimens consisted of fine grains due to dynamic recrystallization. The oxide precipitate content is closely related to the recycled chip size. Accumulated oxygen concentration linearly increases with the total surface area of the machined chips in the recycled specimens. Ambient oxide in the recycled specimen contributes to a higher ultimate tensile strength and a higher elongation to failure; however, excessive oxide in the recycled specimen may adversely affect the elongation to failure. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：385 / 389
页数：5
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