THE EQUAL CHANNEL ANGULAR EXTRUSION PROCESS FOR MATERIALS PROCESSING

By the forcing of a bar of metal through a square tube of constant cro ss section that contains a sharp corner, simple shear is produced in t he bar. Repeating the process several times results in a very large am ount of strain. This paper describes the application of this technique to processing aluminum alloys for submicrometer grain size, deforming copper niobium alloy to increase the strength and extruding gamma tit anium aluminide. The application of this process to materials for spec ific purposes is also discussed. (C) Elsevier Science Inc., 1996.