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KMID : 0381920130430010040
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Korean Journal of Microscopy
2013 Volume.43 No. 1 p.40 ~ p.45
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Mn-deprived Phase Transformation in High-Mn Steel during the Dew-point Control Process
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Hong Woong-Pyo
Baik Sung-Il
Kim Gyo-Sung
Jeon Sun-Ho
Chin Kwang-Guen
Oh Chang-Seok
Kim Young-Woon
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Abstract
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Phase transformation by the Mn-deprivation was observed in the high-Mn twinninginduced plasticity-aided steel. Mn-depletion was induced by the formation of Mn-O oxide during the dew-point control process at temperature above ?20o
C, which changed austenitic parent phase to multi-grained ferrite. Mixture of Al-O, Al-Mn-Si-O oxides were observed at the grain boundaries of transformed ferrite.
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KEYWORD
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Alloys, Surface modification, Phase transformation, Oxidation, Transmission electron microscopy
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