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。
【英文摘要】
The deformation processes of two routes of cyclic equal channel compression(CECC) of 6061 aluminum alloy at the room temperature were stimulated by using Deform of 3D finite element software. The results show that the equivalent stress and strain of the samples processed by the CECC route of CCDC(cyclic channel die compression)+ ECAP(equal channel angular pressing) are higher. The effect of grain refinement in CCDC-ECAP route is better than that in ECAP+CCDC route. The tensile strength of the samples in CCD...
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