Effects of Al-10Sr modifiers with different states, modification temperature and holding time on microstructure of ZL114A alloy

被引：0
|
作者：
Zhao Y.-G. [1 ,2 ]
Yang X.-H. [1 ,2 ]
Xu X.-F. [1 ,2 ]
Zhang Y.-Y. [1 ,2 ]
Ning Y.-H. [1 ,2 ,3 ]
机构：
[1] Key Laboratory of Automobile Materials, Ministry of Education, Jilin University, Changchun
[2] College of Materials Science and Engineering, Jilin University, Changchun
[3] Datang Northeast Electric Power Test & Research Institute, Changchun
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2018年 / 48卷 / 01期
关键词：
Metallic materials; Microstructure; Modification; ZL114A alloy;
D O I：
10.13229/j.cnki.jdxbgxb20161298
中图分类号：
学科分类号：
摘要：
Al-10Sr master alloy with different states (conventional as-cast state, rapid-solidified state and rolled state) were prepared as modifiers in the experiments, with 0.02 wt.% of Sr. The effects of the size of Al4Sr phase, modification temperature and holding time on the microstructure of ZL114A alloy were investigated. Results show that the optimized conditions of ZL114A alloy modified by conventional as-cast and rapid-solidified Al-10Sr master alloy were holding 30 min and 15 min at 750℃, respectively. The rolled Al-10Sr made modification treatment has significant effect at 720℃ for 15 min, as it caused the eutectic silicon to transform into coral-like. The smaller the size of Al4Sr phase, the better modification efficiency was obtained. Moreover, the smaller size of Al4Sr and higher melt temperature resulted in the shorter incubation time. © 2018, Editorial Board of Jilin University. All right reserved.
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页码：212 / 220
页数：8
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