Abstract：Two groups of carbon and nitrogen contents for mild V—N microalloyed steel were calculated by Thermo-Calc and classical dynamic theories to predict the rules for V(C，N) precipitate in deformed austenite. The results indicate that, when deformed in a range of 1000—800 ℃ the existence of ΔGs causes the deformation induced precipitation of V(C，N); as nitrogen content increases by 0.005%, the precipitation-start time can be shorted by one order; when nitrogen content is more than 0.01%, the effect of carbon content on the behavior for V(C，N) precipitate in austenite can be neglected.
2011, Vol. 46 
