Abstract
The evolution of cluster of grains with ∑3 n relationship (∑3 n CG) in austenitic stainless steel was investigated by in situ microstructural observations using electron backscatter diffraction (EBSD). The results showed that, after cold rolling with thickness reduction of 6%, ∑3 n CG developed from several existing grains during annealing at 1173 K. As annealing proceeded, ∑3 n CG was growing larger with the so-called strain induced boundary migration (SIBM), and in the meantime, the connectivity of random high angle grain boundaries (HABs) network was interrupted by low ∑-coincidence site lattice boundaries (∑CSLBs) effectively.
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