A study on the formation mechanisms of the cube recrystallization texture in cold rolled Fe-36%Ni alloys

The formation of sharp cube recrystallization texture after high cold rolli ng reductions in Fe-36%Ni has been studied by means of X-tay texture measur ements and extensive transmission electron microscopy (TEM) observations, i ncluding orientation measurements even in highly deformed materials. In con trast to Cu and Al, this material shows only little recovery during cold de formation; therefore, the deformation structure can be studied in detail. A fter high cold rolling the cube grains present at the hut rolled state show the formation of cells and tile development or a large orientation gradien t inside cube bands. During recrystallisation nucleation of cube grains pro ceeds at a high rate inside these structures. For low deformations cube gra in nucleation seems to be inhibited due to the insufficient orientation gra dient across the cells. Regions of other orientations; show a much lower nu cleation rate owing to their inappropriate microstructure. Thus, other recr ystallization textures only develop if the cube nucleation is inhibited. (C ) 2001 Acta Materialia Inc. Published bu Elsevier Ltd. All rights reserved.