Microstructure and tensile properties of AZ91D magnesium alloy by forced convection rheo-diecasting process

被引：0

作者：

Zhou, Bing ^{[1
]}

Kang, Yong-Lin ^{[1
]}

Qi, Ming-Fan ^{[1
]}

Zhang, Huan-Huan ^{[1
]}

Zhu, Guo-Ming ^{[1
]}

Wu, Zheng-Yang ^{[1
]}

机构：

[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing,100083, China

来源：

Cailiao Gongcheng/Journal of Materials Engineering | 2014年 / 10期

关键词：

Die castings - Forced convection - Die casting - Microstructure - Dies - Magnesium alloys - Magnesium castings - Tensile strength;

D O I：

10.11868/j.issn.1001-4381.2014.10.001

中图分类号：

学科分类号：

摘要：

The microstructure characteristics of AZ91D magnesium alloy connectors were investigated in traditional die-casting and rheo-diecasting process. The formation and solidification behavior of semi-solid slurry were analyzed. The tensile properties of rheo-diecasting tensile samples were tested. The results indicate that the forced convection rheo-diecasting process is able to obtain semi-solid microstructure with fine and near spherical grain. And the process can significantly improve porosity defects existed in traditional die castings and increase density. Compared with conventional die castings, the tensile strength and elongation of rheo-diecasting tensile samples have been significantly improved. T6 heat treatment further strengthens the property of rheo-diecasting tensile samples with the tensile strength of 286MPa and elongation of 6.1%.

引用

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