The hot deformation behavior and structure evolution of austenite-ferrite dual phase stainless steel 00Cr21Ni2Mn5N with strain rate 5 - 50 s

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reduction ratio 60% at 850 ~ 1 150 ℃ have been studied by using Gleeble- 3800 thermo-mechanical simulator etc. Results showed that with increasing temperature the flow stress of dual steel 00Ci21Ni2Mn5N decreased while with increasing strain rate the flow stress of steel increased; the mechanism of steel was related to Zener-Hollomon (Z) parameter； and the apparent stress exponent and apparent activation energy (Q) of the dual phase stainless steel 00Cr21 Ni2Mn5N were 4. 82 and 219 kj/mol respectively.