TEXTURE DURING ECAP AND POST ECAP SIMPLE COMPRESSION OF COMMERCIAL PURITY 1050 ALUMINUM ALLOY

摘要

Electron back scattered diffraction (EBSD) was used to document the texture developed during ECAP. Samples of commercial purity aluminum processed to 8 passes through route B_c and route C were examined on two planes (flow plane and the plane normal to the extrusion direction) and pole figures and orientation distribution function plots (ODFs) were generated. The results of the texture evolved in the as ECAPed samples gave some interpretation for the different mechanical properties realized via the two routes, though the amount of imposed equivalent accumulated strain was the same. Furthermore, the texture developed when ECAPed samples were subsequently compressed was also documented, and the examination of pole figures, ascertained that there is a transition of texture accompanied with the strain path change from simple shear to simple compression.