1. School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai, China
2. Department of Mechanical Engineering, Tsinghua University, Beijing, China
3. School of Materials Science and Engineering, Tianjin University, Tianjin, China
4. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, China
5. Department of Materials Science and Engineering, University of Wisconsin, Madison, WI, USA
6. Institute of Materials Engineering, Technische Universität Dortmund, Dortmund, Germany