Effects of volume fraction of SiC particles on mechanical properties of SiC/Al composites

摘要：

SiC particle reinforced pure aluminum composites were fabricated using a powder metallurgy method.The effect of the volume fraction of the SiC particles on the mechanical properties of the composites was studied by both model simulation and experiment.The results indicate that the yield strength and tensile strength increase,but the elongation decreases with the increase in the volume fraction of the SiC particles.Both the modified shear lag model and the multi-scale model predicted yield strength and normalized elongation show similar evolution trends with the experimental data.However,the modified shear lag model underestimates the yield strength due to the ignorance of the strengthening mechanisms caused by grain refinement and dislocations interaction by the introduction of the SiC particles,and the multi-scale model overestimates the normalized elongation due to the ignorance of the pores distributed in the matrix.

关键词： SiC/Al composites mechanical properties microstructure

作者: SONG Min

作者单位: State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

会议类型: 国际会议

会议名称: 2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)

会议地点: 长沙

会议语种:英文

页码: 1400-1404

在线出版日期: 2009-11-22（万方平台首次上网日期，不代表论文的发表时间）