The railway axle according to this disclosure has a pair of fitting portions and which each include a fitting portion hardened layer and a base metal portion, and a center parallel portion which includes a center parallel portion hardened layer and the base metal portion. The base metal portion has the chemical composition described in the description. In a region having the Vickers hardness of 480 HV or more in the center parallel portion hardened layer, a dislocation density p obtained based on a CoKα characteristic X-ray diffraction result is 2.5×1016 m−2 or less, a half-value width B of the (211) diffraction plane is 1.34 degrees or less, and the dislocation density p and the half-value width B of the (211) plane obtained by X-ray diffraction satisfy Formula (1).(−4.8×1016×B+8.5×1016)/ρ≥1.00  (1)


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    Titel :

    RAILWAY AXLE


    Beteiligte:
    MAKINO TAIZO (Autor:in) / KOZUKA CHIHIRO (Autor:in) / YAMAMOTO YUICHIRO (Autor:in) / HATA TOSHIYUKI (Autor:in) / YAMANE AKIHITO (Autor:in)

    Erscheinungsdatum :

    2023-08-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / C22C Legierungen , ALLOYS



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