Microstructure, Mechanical Properties, and Age-Hardening Behavior of an Al-Si-Fe-Mn-Cu-Mg Alloy Produced by Spray Deposition

被引：0
作者：
Wang Feng
Zhang Jishan
Xiong Baiqing
Zhang Yongan
机构：
[1] General Research Institute for Nonferrous Metals,State Key Laboratory for Fabrication and Processing of Nonferrous Metals
[2] University of Science and Technology Beijing,State Key Laboratory for Advanced Metals and Materials
来源：
Journal of Materials Engineering and Performance | 2011年 / 20卷
关键词：
age-hardening behavior; mechanical properties; microstructure; spray deposition;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
It has been recognized generally that the spray-deposited process is an innovative technique of rapid solidification. In this paper, Al-20Si-5Fe-3Mn-3Cu-1Mg alloy was synthesized by the spray atomization and deposition technique. The microstructure and mechanical properties of the spray-deposited alloy were studied using x-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), and tensile tests. It is observed that the microstructure of spray-deposited Al-20Si-5Fe-3Mn-3Cu-1Mg alloy is composed of the α-Al,Si and the particle-like Al15(FeMn)3Si2 compounds. The aging process of the alloy was investigated by microhardness measurement, differential scanning calorimetry analysis, and TEM observations. The results indicate that the two types of precipitates, S-Al2CuMg and σ-Al5Cu6Mg2 precipitate from matrix and improve the tensile strength of the alloy efficiently at both the ambient and elevated temperatures (300 °C).
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页码：155 / 159
页数：4
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