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利用Deform三维有限元软件模拟了室温6061铝合金两种路径复合挤压(cyclic equal channel compression,CECC)的变形过程。结果表明:试样经反复镦挤(cyclic channel die compression,CCDC)+等通道转角挤压(equal channel angular pressing,ECAP)复合挤压路径的等效应力与等效应变较大,晶粒细化效果比ECAP+CCDC路径好。CCDC+ECAP路径试样的抗拉强度较高,其断口表现出韧性断裂的特征。CCDC+ECAP是最佳的复合挤压路径之一。
Deform 3D finite element software was used to simulate the deformation process of two cyclic equal channel compression (CECC) of room temperature 6061 aluminum alloy. The results show that the equivalent stress and equivalent strain of the ECAP composite extrusion path by CCDC + ECAP are larger, and the grain refinement The effect is better than the ECAP + CCDC path. The tensile strength of the CCDC + ECAP path specimen is high, and the fracture shows the characteristics of ductile fracture. CCDC + ECAP is one of the best composite extrusion paths.