Abstract
A metastable austenitic stainless steel was repetitively cold rolled and reversely annealed. The strain-hardening behavior and deformation mechanism during tensile testing were comparatively studied for the specimens annealed at 800°C and 1000°C. Fine-grained austenite with uniformly distributed carbides was formed in the 800°C-annealed specimen, whereas coarse-grained austenite without carbides was obtained with annealing at 1000°C. Continuous strain hardening was achieved in all specimens, which could be attributed to the strain-induced martensite and deformation twining for the annealed specimens at 800 and 1000°C, respectively. The carbide precipitation promoted the formation of strain-induced martensite due to the depletion of austenite stabilizers.
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