ROLLING TEXTURE IN THE INTERMETALLIC COMPOUND NI76AL24(B)

The development of cold rolling texture in the intermetallic compound Ni3Al(B) has been investigated as a function of rolling reduction, usi ng the conventional pole figure as well as the orientation distributio n functions (ODF) method. The textures at low degrees of deformation h ave been found to be similar to the rolling texture of pure Ni cold ro lled to similar levels. With increasing degree of deformation, the tex ture in Ni3Al(B) changes to alloy type at reductions greater than 45%. This texture is characterized by the presence of a remarkably strong rotated Goss component over and above the Brass (B-s) component. Trans mission electron microscopy of thin foils of the material cold rolled by 65% and more skews evidence of twinning. X-ray diffraction analysis indicates a structural change in the material from Ll(2) to DO22 with the progress of cold work. An attempt has been made to explain the te xture development in terms of this structural transformation. (C) 1998 Elsevier Science S.A. All rights reserved.