Effects of Nd and Cu on Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloy

被引：0

作者：

Xie, Feng ^{[1
,2
]}

Zhang, Libo ^{[1
,2
]}

Peng, Jinhui ^{[1
,2
]}

Yin, Shaohua ^{[1
,2
]}

Li, Shiwei ^{[1
,2
]}

Ma, Aiyuan ^{[1
,2
]}

Yang, Kun ^{[1
,2
]}

Chen, Weiheng ^{[1
,2
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China

[2] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China

来源：

2015 2ND INTERNATIONAL CONFERENCE ON MATERIAL ENGINEERING AND APPLICATION (ICMEA 2015) | 2015年

关键词：

AL-SI ALLOYS; SILICON; REFINEMENT; VIBRATION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the modification of Nd to hypereutectic Al-20Si alloy was studied, and the effects of Cu on the microstructures and mechanical properties of the modified Al-20Si alloy were investigated. The results showed that the primary Si transformed from irregular morphology to fine polyhedral morphology, and the morphology of eutectic Si transformed from acicular/lamellar to short-rod and point like after modification. Compared with Al-20Si alloy, the tensile strength of Al-20Si-0.3Nd increased by 22.8%, and the elongation increased by 127.8%. The strengthening phase CuAl2 appeared in the Cu-containing Al-20Si-0.3Nd alloy; as a result, the mechanical properties of Al-20Si-0.3Nd-Cu alloy were improved. Compared with Al-20Si alloy, the tensile strength of Al-20Si-0.3Nd-2.0Cu alloy increases by 39.5%, and the elongation doesn't decrease.

引用

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页码：496 / 502

页数：7

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