Effect of constraint on tensile behavior of an AZ91 magnesium alloy

被引：21
|
作者：
Yan, C [1 ]
Ye, L [1 ]
Mai, YW [1 ]
机构：
[1] Univ Sydney, Sch Aerosp Mech & Mechatron Engn J07, Ctr Adv Mat Technol, Sydney, NSW 2006, Australia
来源：
MATERIALS LETTERS | 2004年 / 58卷 / 25期
关键词：
magnesium alloy; tensile test; deformation; fracture; constraint; fracture surface;
D O I：
10.1016/j.matlet.2004.06.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The deformation and failure behaviour of a cast AZ91 alloy was investigated using tensile test on the circumferentially notched tensile specimens with different notch radii. The strain and stress triaxiality corresponding to the failure point were estimated. The fracture surface was observed using scanning electron microscopy (SEM). The results indicated that deformation and failure of the AZ91 magnesium alloy are very sensitive to constraint level (stress triaxiality). The fracture mechanisms changed from typical ductile tearing to quasi cleavage with increasing constraint level. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：3219 / 3221
页数：3
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