Effect of Al-5Ti-0.8C Master Alloy on Microstructure and Elevated Temperature Mechanical Properties of Al-Cu-Mn Alloy

被引：0
作者：
Zhang Guowei [1 ]
Niu Jingwei [1 ]
Xu Hong [1 ]
Jia Hongmin [2 ]
机构：
[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China
[2] Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2021年 / 50卷 / 07期
关键词：
Al-5Ti-0.8C master alloy; Al-Cu-Mn alloy; grain refinement; precipitation strengthening; elevated temperature mechanical properties; GRAIN-SIZE; TI; REFINEMENT; PARTICLES; STABILITY; KINETICS; BEHAVIOR; LA;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new kind of Al-5Ti-0.8C master alloy was fabricated using a self-propagating combustion reaction method and dilution treatment, and the effects of different Al-5Ti-0.8C master alloy contents (0wt%, 0.1wt%, 0.3wt%, 0.5wt%) on the microstructure and elevated temperature mechanical properties of Al-Cu-Mn alloy were investigated. The results show that the Al-5Ti-0.8C master alloy refines the Al-Cu-Mn alloy, increases the amount of theta'(Al2Cu) precipitates, and reduces their size during heat treatment, resulting in the grain refinement. Moreover, this new master alloy obviously improves the elevated temperature mechanical properties of Al-Cu-n alloy, mainly due to the precipitation strengthening caused by the uniform distribution of second phases and fine theta'(Al2Cu) precipitates, and the formation of Al-3(Ti, Zr) nanoparticles with high thermal stability. Furthermore, the microstructure and mechanical properties of Al-Cu-Mn alloy with 0.3wt% A1-5Ti-0.8C master alloy show the optimal status.
引用
收藏
页码：2321 / 2328
页数：8
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