1. State Key Laboratory of High Performance Complex Manufacturing Central South University Changsha 410083 China
2. College of Mechanical and Electrical Engineering Central South University Changsha 410083 China
3. Light Alloys Research Institute Central South University Changsha 410083 China
4. School of Mechanical Engineering Changsha University Changsha 410022 China
5. School of Mechanical, Materials, Mechatronic and Biomedical Engineering University of Wollongong NSW 2522 Australia
6. Electron Microscope Unit University of New South Wales Sydney NSW 2052 Australia