Rheo-diecasting of AZ91D magnesium alloy |
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| Authors: | Jun Xu Guojun Liu Shaoming Zhang Likai Shi Zhongyun Fan |
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| Affiliation: | 1. General Research Institute for Nonferrous Metals,Beijing 100088,China
2. Brunel Centre for Advanced Solidification Technology,Brunel University,Uxbridge,London,UB8 3PH,UK |
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| Abstract: | A rheo-diecasting process (RDC) was investigated for semisolid processing of an AZ91D magnesium alloy. The results of the RDC samples in as-cast state indicate that the microstructure of primary α-Mg particles has a fine size, nearly spherical morphology, and uniform distribution throughout the components. Due to the advanced microstructure and reduced level of defects, the RDC AZ91D Mg alloy exhibits an apparent improvement in mechanical properties. The quantitative metallographic investigations reveal that increasing the intensity of forced convection during the slurry preparation results in a promoted nucleation and reduced volume fraction of the primary phase solidified in the slurry maker. |
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| Keywords: | magnesium alloys semisolid die casting microstructure mechanical properties |
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