Effects of cold-rolling reduction on the recrystallization texture and grain boundary of ferritic stainless steel

摘要

The study investigates the effects of cold-rolling reduction on the recrystallization-annealed Nb+Ti stabilized ultra-pure ferritic stainless steel with 21%Cr in regards to its microstructure evolution,grain size,recrystallization texture,and grain boundary characteristic distribution and disorientation angle.The research employed the electron back scattered diffraction technique and its results have shown that the average grain size was reduced and the {111} component was strengthened,which rotated towards {554} and {445},with an increasing cold-rolling reduction.The number fraction of the low-angle grain boundary and the coincidence site lattice(CSL) boundary,which was mainly made up of Σ3,Σ7,Σ11 and Σ13b,also increased.