Effects of RE on Microstructure and Mechanical Properties of ZnAl4 Alloy

Geng Jiarui; Xue Tao; Nie Dengpan; Wu Subin; Wu Jian

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Effects of RE on Microstructure and Mechanical Properties of ZnAl4 Alloy
Vol. 31, Issue 8, Pages: 721-724(2011)
Published： 2011 ，
DOI：

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[1]耿家锐,薛涛,聂登攀,吴素彬,吴健.稀土对压铸锌合金ZnAl4组织和性能的影响[J].特种铸造及有色合金,2011,31(08):721-724.

Geng Jiarui, Xue Tao, Nie Dengpan, et al. Effects of RE on Microstructure and Mechanical Properties of ZnAl4 Alloy. [J]. Special Casting & Nonferrous Alloys 31(8):721-724(2011)
[1]耿家锐,薛涛,聂登攀,吴素彬,吴健.稀土对压铸锌合金ZnAl4组织和性能的影响[J].特种铸造及有色合金,2011,31(08):721-724. DOI：

Geng Jiarui, Xue Tao, Nie Dengpan, et al. Effects of RE on Microstructure and Mechanical Properties of ZnAl4 Alloy. [J]. Special Casting & Nonferrous Alloys 31(8):721-724(2011) DOI：

摘要

采用Ce基混合稀土对ZnAl4合金进行了变质处理

研究了稀土对ZnAl4合金力学性能的影响规律。结果表明

加入0.5%的稀土能够细化ZnAl4合金的压铸态组织

合金共晶组织区域增加

稀土含量超过0.5%时

合金的综合力学性能下降。用0.5%稀土变质后的合金生产化油器

合金的压铸性能得到改善

零件的气密性得到大幅提高。

Abstract

Effects of Ce on microstructure and mechanical properties of ZnAl4 alloy modified by Ce were investigated.The results show that with 0.5% Ce addition

microstructure of die casting ZnAl4 alloy is refined

where eutectic zone is increased.However

with Ce content more than 0.5%

comprehensive properties of the alloy are deteriorated as a result of the creation of Al4C3 phase.The alloy with 0.5% Ce modification was employed to produce carburetor.The production verified that the die casting behavior of the modified alloy is obviously improved

and air-tightness of the carburetor is greatly improved.