Effects of Zr+Er and Zr+Y on Microstructure and Tensile Properties of Al-Mg-Si-Cu-Mn-Cr Alloys

被引：0

作者：

Wang X. ^{[1
]}

Zhao Y. ^{[1
]}

Jiao L. ^{[1
]}

Qian W. ^{[1
]}

Wang Y. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Jiangsu University, Zhenjiang

来源：

Zhao, Yutao (zhaoyt@ujs.edu.cn) | 1600年 / Cailiao Daobaoshe/ Materials Review卷 / 31期

关键词：

Aluminium alloy; Dispersed phase; Grain refinement; Mechanical property; Microalloying;

D O I：

10.11896/j.issn.1005-023X.2017.018.015

中图分类号：

学科分类号：

摘要：

The effects of 0.3%Zr+0.2%Er and 0.3%Zr+0.2%Y (mass fraction) on the microstructure and mechanical properties of Al-0.6Mg-0.9Si-0.5Cu-0.5Mn-0.2Cr (mass fraction) alloy before and after heat treatment were investigated based on optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), transmission electron microscopy (TEM) and tensile test. The results showed that both Zr+Er and Zr+Y could refine the α-Al grains, and the latter was more prominent and effective. Furthermore, both of them could improve the strength and ductility of the as-cast Al-0.6Mg-0.9Si-0.5Cu-0.5Mn-0.2Cr alloy. With heat treatment, both Zr+Er and Zr+Y had a negative influence on the precipitation of dispersed phase in the alloy and resulted in a decrease in dispersion strengthening. Finally, Zr+Er modified alloy had higher strength than matrix alloy, while Zr+Y modified alloy had lower strength, and both of them had lower elongation than matrix alloy. © 2017, Materials Review Magazine. All right reserved.

引用

页码：72 / 76

页数：4

共 24 条

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