1. Study of deformation-induced phase transformation in plain low carbon steel at low strain rate
- Author
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Chung, J.H., Park, J.K., Kim, T.H., Kim, K.H., and Ok, S.Y.
- Subjects
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DEFORMATIONS (Mechanics) , *PHASE transitions , *MILD steel , *STRAINS & stresses (Mechanics) , *COMPRESSIBILITY , *HIGH temperatures , *AUSTENITIC steel , *ELECTRON probe microanalysis - Abstract
Abstract: Hot-deformation behavior of super-cooled austenite within the austenite–ferrite (γ–α) phase field was studied in low carbon steels (0.15wt.%) at various strain rates. Flow softening was observed during the hot-deformation at temperatures lower than critical temperature. The critical temperature was observed to be significantly higher than T 0 temperature. This was due to large shift of γ–α phase-equilibrium to a higher temperature during hot-deformation. A thermodynamic model to account the effect of non-uniform deformation-induced stress on the γ–α phase-equilibrium during hot-deformation was proposed and its prediction was in good agreement with the experimentally measured critical temperature. [Copyright &y& Elsevier]
- Published
- 2010
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