Directional recrystallization of ODS alloys by means of zone annealing

A process of the directional recrystallization in Fe-base ODS ferrite, nickel and Ni-based ODS alloy was investigated by using a zone annealing equipment. Zone annealing promotes the formation of the recrystallized grains for Ni and Ni-base ODS alloy. For Fe-base ODS ferrite, the zone annealing is not effective and the directional recrystallization is mainly affected by the cold-rolled structure. The effective pinning by the dispersed yttria particles against grain boundary movement was also verified.