1. School of Mechanical and Aerospace EngineeringOklahoma State UniversityStillwaterOK74078USA
2. Department of Mechanical Engineering and Materials ScienceUniversity of PittsburghPittsburghPA15261USA
3. Department of Materials Science and EngineeringIntegrative Materials Research InstituteHallym University1 Hallymdaehak‐gilChuncheonGangwon‐do200‐702Republic of Korea