Rheo-diecasting of AZ91D magnesium alloy
来源期刊：Rare Metals2010年第5期
论文作者：XU Juna,LIU Guojuna,ZHANG Shaominga,SHI Likaia,and FAN Zhongyunb a General Research Institute for Nonferrous Metals,Beijing,China b Brunel Centre for Advanced Solidification Technology,Brunel University,Uxbridge,London,UB PH,UK
文章页码：542 - 546
摘 要：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.
XU Juna,LIU Guojuna,ZHANG Shaominga,SHI Likaia,and FAN Zhongyunb a General Research Institute for Nonferrous Metals,Beijing100088,China b Brunel Centre for Advanced Solidification Technology,Brunel University,Uxbridge,London,UB8 3PH,UK
摘 要：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.
关键词：
