Effects of residual stress and dislocation on tensile deformation behavior of SiC_w/Al composites

作     者：胡 明 胡 津 费维栋 姚忠凯 

作者机构：School of Materials Science and Engineering Harbin Institute of Technology 

出 版 物：《中国有色金属学报》 (The Chinese Journal of Nonferrous Metals)

年 卷 期：2001年第11卷第Z1期

页      面：125-128页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：SiC whisker yield strength dislocation thermal residual stress 

摘      要：By means of XRD, Instron electronic tensile machine and TEM, the dislocation states and strengthening mechanisms of SiC whisker reinforced pure aluminum matrix composites were studied with different annealing treatment processes and matrixes. The results showed that the strengthening mechanisms of SiC w/p Al composite and SiC w/6061Al composites are different. For the SiC w/p Al composite, the thermal residual stress plays more important role in strengthening than the high density dislocations in matrix; for the SiC w/6061Al composite, the dislocation strengthening and precipitation are main strengthening factors.