Spark plasma sintering and age hardening of an Al-Zn-Mg alloy powder blend

被引：14

作者：

Rudinsky, S. ^{[1
]}

Hendrickx, P. ^{[1
]}

Bishop, D. P. ^{[2
]}

Brochu, M. ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 0C5, Canada

[2] Dalhousie Univ, Dept Proc Engn & Appl Sci, Halifax, NS B3J 1Z1, Canada

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 650卷

关键词：

Spark plasma sintering; Al alloys; Mechanical properties; ALUMINUM-ALLOYS; CONSOLIDATION;

D O I：

10.1016/j.msea.2015.10.029

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

During sintering of blended powders by spark plasma sintering (SPS), short sintering times are opposed by the requirement of sufficient diffusion times to obtain chemical homogenization. In this study, commercially blended Al-alloy powder Alumix 431D was sintered by SPS at 425 degrees C for various sintering times. Microstructure analysis and mechanical properties of the consolidated components in the T1 and T6 states were evaluated. Densities between 97.5 and 99.7%TD were obtained across all hold times. After sintering for 60 min, microhardnesses of 91 +/- 8 and 143 +/- 6 HV were attained in the T1 and T6 conditions, respectively. The T1 samples had a flexural strength of 659 +/- 37 MPa and a flexural strain of 5.7 +/- 0.3%, compared to 552 +/- 43 MPa and 3.8 +/- 0.2% in the T6 temper. The mechanical properties of the T6 components were lower than those found in the literature. Extensive solution heat treatments of 2 and 4 h were performed prior to aging. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：129 / 138

页数：10

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