J.L. Huang; X.G. Cao; E. Sukedai; S. Yamasaki; and H.C.Gu(Department of Materials Engineering, Luoyang Institute of Technology, Luoyang 471039, China)(Department of Mechanical Engineering, Okayama University of Science, 1-1 Ridai-Cho,Okayama City,Okayma 700, Japan)(Institute of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China)