The Influence of Cold Rolling Reduction on r-value and Recrystallization Behavior in Fe-36Ni Alloy

Recrystallization behavior and grain growth in Fe-36%Ni invar alloy for shadow masks in color cathode ray tubes are studied by using transmission electron microscopy. The r-value increases with increasing (111) surface intensity. In case of light cold-rolling reduction, nuclei orientations of recrystallized structure after annealing are (011) and the nuclei are surrounded by cold rolled matrices of (011) orientation. On the other hand, in case of heavy cold rolling reduction, nuclei orientations of recrystallized structure after annealing are (011) and (100). These two nuclei are surrounded by the same cold rolled matrices of (011) orientation with light cold rolling reduction.