Texture evolution of annealed Fe-19Cr-2Mo-Nb-Ti ferritic stainless steel

摘要

Texture evolution of Fe-19Cr-2Mo-Nb-Ti ferritic stainless steel was investigated under different annealing temperatures. After cold rolling, the in-grain shear bands provide more recrystallization nucleation sites to {111} recrystallization grains with high Taylor factor during recrystallization. As the annealing temperatures increase, the average size of annealed grains and precipitates gradually increase, and 1050°C annealed grains are dominated by the uniform and equiaxial {111} recrystallization grains favourable for the formability. Accordingly, as the annealing temperatures increase, the average plastic strain ratio of annealed sheets rises to 1.71 monotonically.