1. State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China
2. N0.16 Institute of No.9 Academe of China Aerospace Technology Corporation Xi'an 710061 China
3. School of Materials Science and Engineering Peking University Beijing 100871 China
4. Department of Orthopaedics The First Affiliated Hospital of Xi'an Jiaotong University Xi'an 710100 China