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Preparation and rheo-squeeze casting of semi-solid AZ91-2wt.%Ca magnesium alloy by gas bub

 

论文名称

Preparation and rheo-squeeze casting of semi-solid AZ91-2wt.%Ca magnesium alloy by gas bubbling process

发表期刊名称

Journal of Materials Research

简介

In this study, semi-solid slurry of AZ91–2 wt% Ca (AZ91–2Ca) alloy was prepared by gas bubbling and shaped by rheo-squeeze casting process. The results indicate that fine semi-solid slurry of AZ91–2Ca alloy could be obtained by gas bubbling within 30 s, with primary a-Mg particles having an average diameter less than 50 lm and average shape

factor higher than 0.7. With the decrease of pouring temperature from 599 to 590 °C, both tensile strength and elongation of rheo-squeeze casting AZ91–2Ca alloy first increased and then decreased. The rheo-squeeze casting AZ91–2Ca alloy sample prepared at pouring temperature of 596 °C exhibited the peak tensile strength and elongation. Compared with conventional squeeze casting, the improvement in mechanical properties of rheo-squeeze casting AZ91–2Ca alloy was mainly attributed to the grain refinement strengthening, including the refinement and spheroidization of primary a-Mg particles and the refinement in the residual melt.

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发表时间

20151

影响因子

1.647

完成人

Yang Zhang, Guohua Wu, Wencai Liu, Liang Zhang, Song Pang, Wenjiang Ding

联系人

吴国华

电话

13671800698

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