DEFORMATION MECHANISM OF BULK NANOCRYSTALLINE NI PREPARED BY PLASMA EVAPORATION METHOD

摘要：

Bulk nanocrystalline Ni samples were prepared by plasma evaporation method combined with hot pressure sintering. The compressive mechanical properties of the bulk samples were tested under quasi-static strain rates at room temperature and the evolution of microstructure of bulk sample before and after compression was studied. The experimental results indicated that the bulk samples show a good combination of strength and ductility and have obvious strain rate sensitivity. Both dislocation glide mediated and grain boundary mediated deformation mechanism were found to be main operating deformation mechanisms for the bulk samples based on the mechanical behaviors and grain refinement after compression.

关键词： Bulk nanocrystalline Ni deformation mechanism microstructure mechanical behavior

作者: JIANQIU ZHOU RONGTAO ZHU ZHENZHONG ZHANG

作者单位: School of Mechanical Engineering, Nanjing University of Technology, Nanjing, Peoples Republic of Ch School of Materials Science and Engineering, Nanjing University of Technology, Nanjing, Peoples Rep

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: 1640-1645

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）