Effect of trace additions of Sn on microstructure and mechanical properties of Al-Cu-Mg alloys

被引：50
作者：
Banerjee, Sanjib [1 ]
Robi, P. S. [1 ]
Srinivasan, A. [2 ]
Lakavath, Praveen Kumar [1 ]
机构：
[1] Indian Inst Technol Guwahati, Dept Mech Engn, Gauhati 781039, India
[2] Indian Inst Technol Guwahati, Dept Phys, Gauhati 781039, India
来源：
MATERIALS & DESIGN | 2010年 / 31卷 / 08期
关键词：
ALUMINUM-ALLOYS; PRECIPITATION; COPPER; PHASE; SCANDIUM; SILICON; INDIUM;
D O I：
10.1016/j.matdes.2010.03.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The work is aimed at investigating the influence of trace additions of Tin (Sn) on the microstructure, mechanical properties and age-hardening behavior of Al-6.2%Cu-0.6%Mg alloy system. Al-6.2%Cu-0.6%Mg alloys containing varying weight percentages (from 0 to 0.1 wt.%) of Sn were prepared by casting technique. The mechanical properties and microstructure of these alloys were investigated in the as-cast as well as different heat treated conditions. The composition of the different phases present in the microstructure was determined by energy dispersive X-ray (EDS) analysis. The average grain size of the annealed alloy was found to be maximum with trace content of 0.06 wt.% Sn. The hardness and strength of the alloy increased but the ductility reduced with increase in Sn content up to 0.06 wt.%. Precipitation hardening behavior of the alloys was investigated by analyzing the aging time required to attain the peak hardness value. Addition of trace percentage of Sn was observed to have no significant influence on the peak ageing time of the investigated alloy system. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4007 / 4015
页数：9
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