摘要
We present a model which predicts the critical free volume concentration of shear banding instability in metallic glasses(MGs).Fl-om the stability map,this model demonstrates that the prediction of shear band thickness is valid only for a short time after shear instability,and the diffusion of defects should be included in the mature shear band in MGs.The results agree well with the experimental observations and simulations.
基金
Supported by the National Natural Science Foundation of China under Grant No 50801026
Scientific Research Fund of Hunan Provincial Education Department(No 09B030)
the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province.
