作者机构:[1]Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences Shenyang 110016, China, [2]Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA, [3]Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
相关基金:Acknowledgements This study was supported by the National Natural Science Foundation of China (No. 50501022) and the National Basic Research Program of China (No. 2004CB619306). The authors appreciate the helpful discussion with Prof. Z.G. Wang and experimental assistance of John P. Daghfal.