1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, P. R. China
2. Department of Materials Engineering, College of Design and Engineering, National University of Singapore, 9 Engineering Drive 1, 117575 Singapore
3. Chongqing Innovation Center, Northwestern Polytechnical University, Chongqing 401120, P. R. China
4. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, P. R. China