Powder metallurgy processing of Al-Cu-Mg alloy with low Cu/Mg ratio

被引：10

作者：

Cooke, R. W. ^{[1
]}

Hexemer, R. L., Jr. ^{[2
]}

Donaldson, I. W. ^{[2
]}

Bishop, D. P. ^{[1
]}

机构：

[1] Dalhousie Univ, Dept Proc Engn & Appl Sci, Halifax, NS, Canada

[2] GKN Sinter Met LLC, Auburn Hills, MI USA

来源：

POWDER METALLURGY | 2012年 / 55卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Aluminium powder metallurgy; Die compaction; Sintering; Al-Cu-Mg alloys; Tensile properties; Heat treatment;

D O I：

10.1179/1743290111Y.0000000013

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The objective of this work was to develop an Al-Cu-Mg alloy with a low Cu/Mg ratio suitable for press and sinter powder metallurgy (PM) processing. A bulk composition of Al-2.3Cu-1.6Mg was explored for this purpose. Data revealed that the alloy exhibited a normal response to uni-axial die compaction with a performance that was aligned with commercial blends. Temperature and tin content were found to influence the sintering response. Once optimised, near-full theoretical density was achieved in the sintered product. The alloy was also responsive to T6 heat treatment. Peak hardness was attained by solutionising at 530 degrees C and then aging at 200 degrees C for 20 h. Tensile data revealed that the alloy exhibited a very well balanced combination of properties in the T1 and T6 tempers. In this sense, relatively high values of yield strength and ultimate tensile strength were accompanied by wrought-like stiffness and levels of tensile ductility that were abnormally high for press and sinter aluminium PM alloys.

引用

页码：29 / 35

页数：7

共 23 条

[1]

Abel L. A., 1990, ASM HDB, V2, P62

[2]

[Anonymous], 2002, 15 MPIF

[3]

[Arendt S.A. ASTM International ASTM International], 2005, ANN BOOK ASTM STANDA, V2.05, P312

[4]

Arendt S. A., 2005, ANN BOOK ASTM STANDA, V3.01, P86

[5]

Bishop D.P., 2000, POWDER METALLURGY AL, P177

[6]

Bishop D. P., 2000, ADV POWDER METALLURG, V1, P87

[7]

Boland C. D., 2011, MAT SCI E A IN PRESS

[8]

Boland CD, 2011, INT J POWDER METALL, V47, P39

[9] Precipitation hardening processes in an Al-0.40%Mg-1.3%Si-0.25%Fe aluminum alloy [J].

Gupta, AK ;

Lloyd, DJ ;

Court, SA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 301 (02) :140-146

[10] Metallurgical assessment of a hypereutectic aluminum-silicon P/M alloy [J].

Heard, D. W. ;

Donaldson, I. W. ;

Bishop, D. P. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2009, 209 (18-19) :5902-5911

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