Increasing elastic modulus, strength and CTE of AZ91 by reinforcing pure magnesium with elemental copper

被引：49
作者：
Hassan, SF [1 ]
Ho, KF [1 ]
Gupta, M [1 ]
机构：
[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
来源：
MATERIALS LETTERS | 2004年 / 58卷 / 16期
关键词：
AZ91; composite materials; microstructure; thermal expansion; mechanical properties;
D O I：
10.1016/j.matlet.2004.01.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Heat-treatable AZ91 and 3.9 vol.% copper particulate reinforced magnesium composite was synthesized using an innovative disintegrated melt deposition (DMD) technique followed by hot extrusion. Microstructural characterization of the composite material revealed retention and uniform distribution of reinforcement with defect free interface with the matrix. Physical properties characterization revealed improved dimensional stability of composite when compared to AZ91. Mechanical properties characterization revealed an increase in average values of modulus. 0.2% yield strength and ultimate tensile strength of un-heat-treated composite when compared to T6 heat-treated AZ91 while the ductility was adversely affected. An attempt is made in the present study to compare the microstructural, physical and mechanical properties of wwMg/Cu-p composite with that of the commercially used AZ91 alloy. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：2143 / 2146
页数：4
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