Study on microstructure of semi-solid magnesium alloy manufactured by gas bubbles stirring

摘要：

The semi-solid slurry of AZ31 magnesium alloy was manufactured by gas bubbles stirring. The effects of stirring temperature and stirring time on the microstructure of semi-solid slurry were researched. The results indicate that it is feasible to manufacture the slurry with particle-like primary phases. When the stirring temperature is higher, the morphology of the primary a-Mg presents rosette-like morphology and the size of grain is coarse, and the morphology mainly was a- Mg dendrite at lower stirring temperature. Long stirring time could reduce dendrites and liquid phase, and made the nondendritic grains well spheroidized. But the effects of longer stirring on shape and size of primary particles are not significant. The optimal process parameters for ideal semi-solid slurry manufactured were stired 3min at 645 ℃.

关键词： magnesium semi-solid slurry microstructure stirring temperature and time

作者: J.Q. LI L. ZHANG X.P. DONG W. LIU Z. ZHANG

作者单位: School of Mechanical and Energy,Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,Chi State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Scienc

会议类型: 国际会议

会议名称: 2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)

会议地点: 重庆

会议语种:英文

页码: 728-732

在线出版日期: 2010-09-17（万方平台首次上网日期，不代表论文的发表时间）