Numerical simulation of asymmetric rolling of Cu–Sn bars in flat rolls

Abstract

Asymmetric rolling (AR) is an effective method for strengthening metals and alloys, based on severe plastic deformation under mass production conditions. This study presents numerical simulations and experimental validation of AR applied to the production of high-strength strips from round billets by cold rolling. A key advantage of AR under these conditions is the ability to impose large single-pass deformations while maintaining enhanced ductility in the edge regions of the strip, thereby ensuring the formation of defect-free products with improved mechanical and performance. The results of numerical simulation of AR of Cu–Sn tin bronzes are presented. The stress–strain conditions within the deformation zone are systematically examined, and correlations between the deformation behaviour, microstructural development, and the resultant properties of the produced strips are elucidated. It is demonstrated that the combined action of simple shear and pure shear promotes effective microstructural refinement.