作者机构:[1]School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
相关基金:This study was financially supported by the National Natural Science Foundation of China (No.50671009) and the National Doctorate Fund of the Education Ministry of China (No.20060008015).Acknowledgment The authors would like to express their appreciation to the Royal Institute of Technology, Sweden, for supplying the Thermo-Calc software.