Effect of friction between roll and sample on residual shear strains in AA1050 sheet during asymmetrical rolling

비대칭 압연한 AA1100 판재에서 잔류전단변형에 미치는 롤과 재료간의 마찰의 영향

Sheets of aluminum alloy 1050 were asymmetrically cold rolled in a rolling mill with different roll speeds. In order to promote the shear deformation during asymmetrical rolling, cold rolling without lubrication was performed. The variation of the shear strain state during asymmetrical rolling was tackled by means of FEM calculations. Asymmetrical rolling gave rise to the development of pronounced residual shear strain gradients throughout the thickness layers.