The Activation Energy of Superplastic Flow above the Critical Temperature for Steel

@inproceedings{Wen2008TheAE,
  title={The Activation Energy of Superplastic Flow above the Critical Temperature for Steel},
  author={Junbao Wen and Fei Chen and Keke Zhang and Yong Suk Yang},
  year={2008}
}
By means of superplastic tensile test above the Ac1 temperature (γ→α transformation temperature), superplastic deformation activation energy of ultrafine-grained commercial die steel CrWMn is investigated on the basis of the Arrhenius theory equation, ) / exp( 1 RT Q A m − = σ ε& , which indicates the resistance of the superplastic deformation. According to the Arrhenius equation, the activation energy is estimated from the log σt vs 1/T relationship at a constant of sensitivity index of strain… CONTINUE READING