Abstract:There are often cavity defects such as pores and shrinkage holes in the casting billet of copper processing materials. In the subsequent forming process, the cavity defects often evolve into internal cracks or surface defects, which reduces the yield of finished products. Deformation and high temperature can be used to eliminate the cavity defects in the casting billet. Deformation closure of the defects is the prerequisite for eliminating the defects. Therefore, it is necessary to study the geometric evolution of inner void defects in copper alloys during deformation. In this paper, the research progress of deformation evolution of metal cavity defects is discussed.Based on the observation of internal cavity defects and as-cast microstructure of a tin-phosphor bronze continuous casting slab, the applicability of existing research results to copper alloy was discussed, and the potential effect of material microstructure on deformation evolution of cavity defects was pointed out. Considering the difficulties in geometric modeling, an automatic modeling program of volume element model with arbitrary ellipsoidal void was designed in Python language.