Critical Free Volume Concentration of Shear Banding Instability in Metallic Glasses  

作　　者：LIU Long-Fei CAI Zhi-Peng LI Hui-Qiang ZHANG Guang-Ye GUO Shi-Bo 刘龙飞;蔡志鹏;李会强;张光业;郭世柏(Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology,Xiangtan 411201)

机构地区：[1]Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology,Xiangtan 411201

出　　处：《Chinese Physics Letters》2011年第3期169-171,共3页中国物理快报（英文版）

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.

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.

关 键 词：SHEAR GLASSES DIFFUSION 

分 类 号：TG1[金属学及工艺—金属学]