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采用同步轧制方法制备铜/铝复合板,研究了轧制变形量对于铜/铝复合板结合强度和剥离表面形貌的影响,分析了轧制复合界面摩擦机理。研究结果表明,复合板结合强度、剥离表面粘铝、铜基体表面裂纹数都随着轧制变形量的增大而增大。变形量为50%时,结合强度为2 N/mm,变形量为60%时,结合强度为7 N/mm,变形量为70%时,结合强度为14 N/mm。轧制过程中,新鲜金属从结合面裂纹中挤压出来,受界面摩擦力剪切作用,两新鲜金属搓合在一起形成良好结合。
The effects of rolling deformation on the bonding strength and surface morphology of the copper / aluminum composite plate were studied by using the synchronous rolling method. The friction mechanism of the rolling composite interface was analyzed. The results show that the bonding strength of the composite board, the sticky aluminum on the peeling surface and the number of cracks on the surface of the copper substrate all increase with the increase of rolling deformation. The bond strength is 14 N / mm when the amount of deformation is 50%, the bond strength is 2 N / mm, the amount of deformation is 60%, the bond strength is 7 N / mm and the amount of deformation is 70%. During the rolling process, fresh metal is extruded from the crack in the joint surface and is sheared by the frictional force of the interface. The two fresh metals are combined together to form a good bond.