RE对Al-Si-Cu合金组织性能的影响

张亚琴; 徐涛; 陈善荣; 李远发; 樊晓泽; 尹伟; 宋卓能; 黄春生; 谭伟; 唐定骧; 李海斌

doi:10.15980/j.tzzz.2019.09.002

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RE对Al-Si-Cu合金组织性能的影响
Effect of RE on Microstructures and Properties of Al-Si-Cu Alloys
2019年39卷第9期页码：932-935
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.09.002

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[1]张亚琴,徐涛,陈善荣,李远发,樊晓泽,尹伟,宋卓能,黄春生,谭伟,唐定骧,李海斌.RE对Al-Si-Cu合金组织性能的影响[J].特种铸造及有色合金,2019,39(09):932-935.

Zhang Yaqin, Xu Tao, Chan Norman, et al. Effect of RE on Microstructures and Properties of Al-Si-Cu Alloys[J]. Special Casting & Nonferrous Alloys, 2019,39(9):932-935.
[1]张亚琴,徐涛,陈善荣,李远发,樊晓泽,尹伟,宋卓能,黄春生,谭伟,唐定骧,李海斌.RE对Al-Si-Cu合金组织性能的影响[J].特种铸造及有色合金,2019,39(09):932-935. DOI： 10.15980/j.tzzz.2019.09.002.

Zhang Yaqin, Xu Tao, Chan Norman, et al. Effect of RE on Microstructures and Properties of Al-Si-Cu Alloys[J]. Special Casting & Nonferrous Alloys, 2019,39(9):932-935. DOI： 10.15980/j.tzzz.2019.09.002.

摘要

通过金相、扫描电镜分析、X射线衍射、流动性和拉伸测试

研究了RE（La、Ce混合稀土）的加入对Al-Si-Cu合金流动性、力学性能以及显微组织的影响。结果表明

适量RE（La、Ce混合稀土）的加入

可以提高Al-Si-Cu合金的流动性和力学性能

并细化其晶粒尺寸。当RE添加量约为0.4%时

对Al-Si-Cu合金改善效果最佳

合金流动性增加了约24%

铸态合金抗拉强度增加了9.4%

伸长率提高了35%

时效后合金抗拉强度增加了8.4%

伸长率提高了26%。

Abstract

The effects of RE on the fluidity

mechanical properties and microstructures of Al-Si-Cu alloys were investigated by metallographic

scanning electron microscopic analysis

X-ray diffraction

liquidity and tensile test.The results show that the fluidity and mechanical properties of Al-Si-Cu alloy can be enhanced and the grain size can be refined by adding proper amount of RE.Al-Si-Cu alloy has the desirable modification effect with the RE content of about 0.4%

where the fluidity and tensile strength

elongation of alloy are increased by about 24%

9.4% and 35%

respectively

after aging treatment

the tensile strength and elongation are increased by 8.4 and 26%

respectively.