1. National Engineering Research Center for Magnesium Alloys College of Materials Science and Engineering Chongqing University Chongqing 400044 China
2. School of Materials Science and Engineering Tsinghua University Beijing 100084 China
3. Beijing Supreium Co. Ltd. Beijing 100089 China
4. Materials Technology GM Global Propulsion Systems Pontiac MI 48340‐2920 USA
5. Key Laboratory for Advanced Materials Processing Technology Ministry of Education Tsinghua University Beijing 100084 China