Structural transformation in Ni3Al(B) due to cold rolling

The ordered intermetallic compound Ni{sub 3}Al(B) has the Ll{sub 2} structure and remains ordered up to its melting point. There have been numerous controversies regarding the stability of this compound. Corey and Potter and Clark and Mohanty have suggested that Ni{sub 3}Al can be disordered by filing. Baker et al. have shown that ball milling could destroy the ordering in Ni{sub 3}Al powders. Several other Ll{sub 2} alloys are also known to undergo change from the ordered to the disordered state during mechanical working. For a better understanding of the phenomena, the effect of cold rolling on the ordering behavior of a Ni{sub 3}Al(B) alloy has been studied and the results are reported.