A STUDY ON THE APPLICATION OF THE ECAP TO SURFACE PLATING

Abstract

Metal forming processes with shear stresses that very high plastic strains are obtained in one pass are defined as severe plastic deformation (SPD) processes. Strain values can additionally be increased with additional passes throughout the process. Equal channel angular processing (ECAP) is the most applied method among the SPD processes. In the presented study, an approach of application of ECAP method was used in surface plating. Previously manufactured ECAP dies using separated die design approach were used in the study. 5083 Aluminum and Ms 58 Brass alloy strips having 2 and 4 mm thickness were placed in the ECAP die side by side and processed with single and double passes in order to model the metallic plating under cold pressure welding conditions. There were no successful and full joints between the strips although some partial joints were observed. The results were discussed and some suggestions are made in order to obtain successful joints.