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采用有限元法研究了爆炸复合制备Al/Mg/Al叠层板的轧制过程。结果表明:280℃时AZ31、7A52两种合金流变应力接近,具有较好的塑性,有利于叠层板轧制的均匀变形;咬入后开始阶段应变主要集中在铝合金板上,而镁合金板只有少数部位出现应变;随时间延长,铝合金板与镁合金板均发生了较为均匀的变形,有利于整体形变强化;随压下率的增加,铝合金板和镁合金板各点最大应变、最大应力、轧制力、咬入时间均增加,确立了压下率与最大轧制力、压下率与咬入时间的关系。
Finite element method was used to study the rolling process of Al / Mg / Al laminates prepared by explosive mixing. The results show that the flow stress of AZ31 and A52 alloys at 280 ℃ is close to that with good plasticity, which is favorable for the uniform deformation of the laminated plate. The strain at the initial stage after bite is mainly concentrated on the aluminum alloy plate, while the magnesium Only a few parts of the alloy plate strain occurs; with time, the aluminum alloy plate and the magnesium alloy plate are more uniform deformation occurs, is conducive to the overall deformation strengthening; with the reduction of the rate of increase, the maximum point of the aluminum alloy and magnesium alloy plate Strain, maximum stress, rolling force, biting time are increased, the establishment of the reduction rate and the maximum rolling force, reduction rate and biting time relationship.