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Heat treatment, microstructure and mechanical properties of a Mg–Gd–Y alloy grain-refined

 

论文名称

Heat treatment, microstructure and mechanical properties of a Mg–Gd–Y alloy grain-refined by Al additions

发表期刊名称

Materials Science and Engineering A

简介

The effect of additions of 0.5–1 wt% Al on grain refinement, heat treatment and mechanical properties of Mg–10Gd–3Y (wt%) alloy has been investigated. The additions of 0.6–1 wt% Al showed a dramatic grain refinement effect, which is associated with the formation of the Al2(Gd0.5Y0.5) particles that act as nucleants for α-Mg grains. Compared to the Zr refined counterpart, the Al refined alloy needed to be solution treated at a higher temperature to dissolve the majority of the intermetallic particles. Subsequent ageing at low temperatures led to pronounced precipitation hardening and consequently a large improvement in strength. In the peak-aged condition, the strength of the Al refined alloy is comparable to that of the Zr refined counterpart.

图片

发表时间

2013.08

影响因子

2.567

完成人

Jichun Dai, Suming Zhu, Mark A. Easton, Mingxing Zhang, Dong Qiu, Guohua Wu, Wencai Liu, Wenjiang Ding

联系人

刘文才

电话

15921573539

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