Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2009.10a
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- Pages.445-448
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- 2009
Microstructure and deformation behavior of nanostructured dual-phase steel
나노 결정립 이상 조직강의 미세조직 및 변형거동
Abstract
The present work deals with microstructure and tensile deformation of nanostructured dual-phase steel consisting of ferrite and martensite phases. Prior to deformation, a fully martensite phase is prepared and then processed by equal channel angular pressing (ECAP) and subsequent annealing. Room-temperature tensile properties are examined and compared to those of dual-phase steels with coarse grains. Due to the combined effects coming from the grain refinement of both phases and their uniform distributions, the nanostructured dual-phase steel exhibits better strength and ductility than coarse grained counterpart, achieving