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Microstructure and mechanical properties of rheo-squeeze casting AZ91-Ca magnesium alloy p

 

论文名称

Microstructure and mechanical properties of rheo-squeeze casting AZ91-Ca magnesium alloy prepared by gas bubbling process

发表期刊名称

Materials and Design

简介

Rheo-squeeze casting combined with gas bubbling process was proved effective to improve the mechanical properties of AZ91-2 wt%Ca (AZX912) alloy. Increase of gas flow led to improvement of the quality of AZX912 semi-solid slurry and improved ductility of rheo-squeeze casting AZX912 alloy samples. Increase of applied pressure brought refinement in as-cast microstructure and reduction of porosity, as well as continuous improvement in both tensile strength and elongation. Heat treatment at 410 °C promoted dissolution of β-Mg17Al12 phase, morphology modification of Al2Ca phase and further increase of both tensile strength and ductility. Compared with conventional squeeze casting, the mechanical properties of rheo-squeeze casting AZX912 alloy were improved by more than 20%. The improvement in mechanical properties was mainly attributed to the grain refinement in microstructure.

图片

发表时间

20152

影响因子

3.501

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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