THE YIELD BEHAVIOR AND YIELD CRITERION OF BULK METALLIC GLASS

摘要：

In order to define the relation between yield behavior and yield criterion of bulk metallic glass (BMG), analysis and investigations have been carried out for interrelations between yield strengths and the angle which fracture plane deviates from the 45° plane of the maximum shear stress in tensile and compressive test of BMG. Tensile fracture angle is consistent with the result calculated by theory of disconnected slip line field and Mises yield condition. Compressive fracture angle is consistent with the result calculated by Coulomb yield condition. Conclusion: BMG obeys different yield criterions in different stress states. For tensile, it follows Mises criterion, and for compression, it follows Coulomb criterion.

关键词： Bulk metallic glass yield behavior yield criterion theory of disconnected slip line field

作者: JIBIN HU DEMIN CHEN

作者单位: School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing, Peoples R Department of Mechanical Engineering, Academy of Armored Forces Engineering, Beijing, Peoples Repub

会议类型: 国际会议

会议名称: 第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)

会议地点: 哈尔滨

会议语种:英文

页码: 1337-1343

在线出版日期: 2008-09-03（万方平台首次上网日期，不代表论文的发表时间）