压铸耐热镁合金的研究现状和发展趋势  

Research Status and Development Trend of Die-casting Heat-resistant Magnesium Alloys

作　　者：郁鑫 王国红 白扬 叶兵[1] Yu Xin;Wang Guohong;Bai Yang;Ye Bing(National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiaotong University;Shandong Yabo Technology Co.,Ltd.)

机构地区：[1]上海交通大学材料科学与工程学院,轻合金精密成型国家工程研究中心及金属基复合材料国家重点实验室,上海200240 [2]山东雅博科技股份有限公司

出　　处：《特种铸造及有色合金》2022年第2期144-151,共8页Special Casting & Nonferrous Alloys

基　　金：国家重点研发计划资助项目(2016YFB0301001)。

摘　　要：压铸耐热镁合金的发展对促进汽车轻量化进程具有重要意义。分析了压铸镁合金的高温强化机制和塑性变形机制,并结合压铸耐热镁合金的特点探讨了提升其强度及塑性的有效方式。总结了压铸耐热镁合金的研究进展,从合金开发、高温性能、微观组织、失效原因等角度进行了分析。此外,结合压铸耐热镁合金对铸造性能和高温性能的要求,讨论了其发展前景。Die-casting heat-resistant magnesium alloys have great potential in weight-saving of automobile. Firstly, strengthening mechanisms and plastic deformation mechanisms of die-casting magnesium alloys at high temperature were described. Combining with the characteristics of die-casting heat-resistant magnesium alloys, effective ways to improve strength and ductility were analyzed. Then, current research progress in die-casting heat-resistant magnesium alloys was summarized from the aspects of alloy composition development, high-temperature performance, microstructure and failure cause. Finally, combining with the demand of casting properties and mechanical behavior, the research directions and perspectives were pointed out.

关 键 词：耐热镁合金 压铸 强化机制 MG-AL MG-RE 

分 类 号：TG146.22[一般工业技术—材料科学与工程]