1. Applied Mechanics and Structure Safety Key Laboratory of Sichuan ProvinceSchool of Mechanics and EngineeringSouthwest Jiaotong UniversityKey Laboratory of Advanced Technologies of MaterialsMinistry of Education of China Chengdu 610031 China
2. School of Materials Science and EngineeringSouthwest Jiaotong University Chengdu 610031 China
3. School of Mechanics and EngineeringSouthwest Jiaotong University Chengdu 610031 China