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    Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/41842


    Title: The Effects of Mo and Nb on the Microstructures and Properties of CrFeCoNi(Nb,Mo) Alloys
    Authors: Tsau, CH (Tsau, Chun-Huei)
    Tsai, MC (Tsai, Meng-Chi)
    Contributors: 化學工程與材料工程學系暨奈米材料研究所
    Keywords: HIGH-ENTROPY ALLOYS
    CORROSION BEHAVIOR
    STAINLESS-STEELS
    RESISTANCE
    DESIGN
    Date: 2018-09
    Issue Date: 2019-01-16 15:45:06 (UTC+8)
    Abstract: The effects of niobium and molybdenum additions on the microstructures, hardness and corrosion behaviors of CrFeCoNi(Nb,Mo) alloys were investigated. All of the CrFeCoNi(Nb,Mo) alloys displayed dendritic microstructures. The dendrites of CrFeCoNiNb and CrFeCoNiNb0.5Mo0.5 alloys were a hexagonal close packing (HCP) phase and the interdendrites were a eutectic structure of HCP and face-centered cubic (FCC) phases. Additionally, the dendrites of CrFeCoNiMo alloys were a simple cubic (SC) phase and the interdendrites were a eutectic structure of SC and FCC phases. The volume fraction of dendrites and interdendrites in these alloys were calculated. The influences of the volume fraction of dendrite in the alloys on the overall hardness were also discussed. The CrFeCoNiNb alloy had the larger volume fraction of dendrite and thus had the highest hardness among these alloys. The CrFeCoNi(Nb,Mo) alloys also showed better corrosion resistances in 1 M H2SO4 and 1 M NaCl solutions by comparing with commercial 304 stainless steel. The CrFeCoNiNb0.5Mo0.5 alloy possessed the best corrosion resistances in these solutions among the CrFeCoNi(Nb,Mo) alloys.
    Appears in Collections:[Department of Chemical & Materials Engineering] journal articles

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