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Transmission electron micrograph of type 302AA" austenitic stainless steel, cold-rolled and then annealed at 704 oC for one hour. Partially recrystallised microstructure. Recrystallised grains are clean (largely free from defects) whereas the deformed regions show a large concentration of defects. There are annealing twins in the recrystallised region. Shows a recrystallised grain which is relatively free of dislocations and contains annealing twins, surrounded by a deformed matrix which has a high dislocation density.