Kink band formation and its effect on recrystallization in ordered and disordered Ni3Fe single crystals

Abstract

In order to study the influence of ordering on deformation and recrystallization, NijFe single crystals, ordered and disordered by appropriate heat treatments, were deformed in tension at room temperature and subsequently annealed at temperatures above the order-disorder transformation temperature. Both ordered and disordered single crystals exhibited a large elongation, while deformation microstructures were totally different. Kink bands formed only in the disordered single crystals. Recrystallization occurred along the kink bands. Many recrystallized grains had 〈111〉-rotation relationships with the kink band and were twin related to each other. In contrast, no recrystallized grain formed in the single crystal deformed in the ordered state. © 2007 The Japan Institute of Metals.