INFLUENCE OF REINFORCEMENT SIZE ON MICROPLASTIC DEFORMATION BEHAVIOR OF SiCp/Al COMPOSITES

摘要：

The microplastic deformation behavior of 20 vol.％ SiCp/Al composites with various SiC particle sizes were investigated. The SiC particles are in four nominal sizes of 1, 5, 20 and 56 μm. The experimental results showed that the micro-yield strength is very sensitive to composite microstructure features. As the particle size increases, the micro-yield strength of composites decrease firstly, and then increase. The observed results were attributed to thermal residual stress and dislocation density due to the large difference in coefficient of thermal expansion between the matrix and reinforcement.

关键词： Microplastic deformation size effects SiCp/Al composite dislocations residual stress

作者: YIWU YAN LIN GENG DAYONG LIU

作者单位: Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, Peoples Republic of Chin School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Peoples

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: 1455-1460

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）