TEXTURE EVOLUTION OF THE Al SHEET PROCESSED BY CONTINUOUS CONFINED STRIP SHEARING BASED ON EQUAL CHANNEL ANGULAR PRESSING

摘要

A new concept process, a so-called as C2S2 process based on equal channel angular pressing, for fabricating the Al alloy sheets with a high formability is introduced. The C2S2 machine was designed so that it can feed the metal strip in a continuous manner at a relatively high speed in the range of ～ 20 m/mmin. A significant amount of the shear deformation could be achieved by passing the sample through the ECAP die with Φ=120°. The pole figures were calculated both to demonstrate the evolution of the textures of the 1050 Al alloy sheets and to elucidate the feasibility of the proposed process as a means for enhancing the formability of the metal strips.