Degradation in Steels: Transformation Plasticity |
Yi-Gil Cho, Heung-Nam Han |
Department of Materials Science and Engineering and Center for Iron & Steel Research, RIAM, Seoul National University |
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ABSTRACT |
Super-plastic deformation that originates from transformation plasticity has favorable aspects for steels with improved strength and ductility. However, it also causes undesirable deformation of products or specimens, leading to their degradation. This article reviews recent investigations of transformation plasticity. A combination of newly suggested models, numerical analyses, and novel experiments has attempted to reveal the mechanism. Since the nature of the transformation plasticity is still unclear, there are significant challenges still to be solved. Fundamental understanding of transformation plasticity will be essential for the development of advanced steels. |
Key words:
Transformation plasticity, Degradation, Steel, Phase transformation, Creep |
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