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인공 경년열화 열처리된 2.25CrMo 강에서의 고용원소 고갈 및 탄화물 변화
변재원(Jai Won Byeon),표승우(S. W. Pyo),권숙인(S. I. Kwun) 한국열처리공학회 2002 熱處理工學會誌 Vol.15 No.2
N/A The depletion of solid solution elements from matrix and the change of carbides during artificial aging of 2.25CrMo steel at 630℃ were investigated. The Mo and Cr elements were found to be depleted drastically in the early stage of aging. The change of carbides was confirmed by analyzing the XRD patterns of electrolytically extracted carbides. Four type of carbides, M_23C_6, M_3C, M_2C and M_6C, were found to exist in the specimen before aging. The amount of M_6C carbides increased with aging time, while that of M_3C carbides diminished after short aging time.