Papers by Keyword: Cross-Roll Rolling

Abstract: Texture distribution through thickness in 6xxx aluminum alloy cross-roll rolled sheet has been investigated using the electron back-scattered diffraction (EBSD) technique. Analyses of texture in three layers from the surface to the center of the sheet were performed. Near the surface, shear type textures including {012}<142> orientation and {112}<110> orientation were found and β-fiber texture were dominating. In the center layer, very weak β-fiber texture {112}<111> orientation, {123}<634> and {011}<211> were found with Cube, Cube-ND and Goss orientation plus others.

Abstract: Cross-roll rolling with different rolling routes (unidirectional rolling and reverse rolling) was carried out on a commercial Mg alloy sheets. In the cross-roll rolling, the roll axis was tilted by 7.5 degrees against the transverse direction. As a result of the Erichsen tests at 433 – 493 K, the stretch formability of the reverse cross-rolled specimen was higher than that of the unidirectional cross-rolled specimen. The reverse cross-rolled specimen showed lower average Lankford value compared with the unidirectional cross-rolled specimen. This is likely to be responsible for the enhanced stretch formability of the reverse cross-rolled specimen. The higher stretch formability was attributed to reduction of (0002) texture intensity, which was originated from random grain distribution.