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

被引：52

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.

引用

页码：2143 / 2146

页数：4

共 18 条

[1]

*ASM INT, 1991, ASM HDB HEAT TREAT, V4, P899

[2]

Brooks GB, 1998, SMITHELLS METALS REF, P14

[3]

CLYNE TW, 1993, INTRO METAL MATRIX C, P14

[4]

EDGAR R, 1999, P 56 ANN M IMA JUN 6, P21

[5]

Eliezer D, 1999, SYNTHESIS OF LIGHTWEIGHT METALS III, P139

[6]

Eustathopoulos N., 1999, PERG MAT SER, V3

[7] Synthesis, microstructure and properties characterization of disintegrated melt deposited Mg/SiC composites [J].

Gupta, M ;

Lai, MO ;

Saravanaranganathan, D .

JOURNAL OF MATERIALS SCIENCE, 2000, 35 (09) :2155-2165

[8]

Gupta M., 1999, Aluminum Transactions, V1, P33

[9] Development of a novel magnesium-copper based composite with improved mechanical properties [J].

Hassan, SF ;

Gupta, M .

MATERIALS RESEARCH BULLETIN, 2002, 37 (02) :377-389

[10]

*INT CTR DIFFR DAT, 1991, POWD DIFFR FIL

← 1 2 →