Microstructure and mechanical properties of Al-10Si alloy modified with Al-5Ti

被引：7
作者：
Liu, Ya-ling [1 ,2 ,3 ]
Wu, Chang-jun [1 ,2 ,3 ]
Tu, Hao [1 ,2 ,3 ]
Lu, Xiao-wang [1 ,2 ,3 ]
Wang, Jian-hua [1 ,2 ,3 ]
Su, Xu-ping [1 ,2 ,3 ]
机构：
[1] Changzhou Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Peoples R China
[2] Changzhou Univ, Natl Expt Teaching Demonstrat Ctr Mat Sci & Engn, Changzhou 213164, Peoples R China
[3] Changzhou Univ, Jiangsu Collaborat Innovat Ctr ofPhotovolta Sci &, Changzhou 213164, Peoples R China
来源：
CHINA FOUNDRY | 2018年 / 15卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Al-10Si; modification; microstructure; mechanical properties; AL-SI ALLOYS; GRAIN-REFINEMENT; MASTER ALLOY; TI; PARTICLES; BEHAVIOR; SILICON; ALUMINUM;
D O I：
10.1007/s41230-018-8034-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The microstructure, fracture morphology and mechanical properties of Al-10Si alloy modified with AI-5Ti were analyzed and tested by optical microscopy, scanning electron microscopy, and universal electronic testing machine. Compared with unmodified Al-10Si alloy, the area fraction of alpha-Al phase in Al-10Si alloy modified at 740 degrees C increased first and then decreased with the increase of added amounts of Al-5Ti, and reached the maximum when the added amount of Al-5Ti was 0.5wt.%. When the modification temperature increased from 700 to 740 degrees C with Al-5Ti being fixed at 0.5wt.%, alpha-Al dendrites were refined obviously and the area fraction remarkably increased. Compared with unmodified Al-10Si alloy, the ultimate tensile strength and elongation of the alloy modified at 740 degrees C with 0.5wt.% Al-5Ti increased by 9% and 49%, respectively. The fracture surface of modified alloy predominantly exhibited ductile fracture.
引用
收藏
页码：405 / 410
页数：6
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