This paper describes nanostructured railway wheels made of Si-Mn-Mo-V low-carbon steel through an advanced metallurgy process and fabrication technology. The microstructure of the wheels, particularly in the rim portion, is composed of carbide-free bainite that consists of bainitic ferrite laths and retained austenite films along the lath boundaries. The thickness of the laths and films is in nanometer scale. For comparison, traditional pearlite-ferrite wheel steels are also investigated. Test results show that carbide-free bainite steel is superior to pearlite-ferrite steel not only in yield strength but also in fracture toughness. Theoretical explanation of these phenomena is also elucidated.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Fracture toughness of nanostructured railway wheels


    Weitere Titelangaben:

    Bruchzähigkeit von nanostrukturierten Eisenbahnrädern


    Beteiligte:
    Zhang, M.R. (Autor:in) / Gu, H.C. (Autor:in)

    Erschienen in:

    Engineering Fracture Mechanics ; 75 , 18 ; 5113-5121


    Erscheinungsdatum :

    2008


    Format / Umfang :

    9 Seiten, 32 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Fracture Toughness Test in Railway Wheels

    Minicucci, Domingos José / Milagres, Marcelo Geraldo Rocha / Boas, Renato Lyra Villas | SAE Technical Papers | 2007


    Fracture toughness of R7 railroad wheels

    Diener, M. / Speidel, M. O. / Associazione Italiana di Metallurgia | British Library Conference Proceedings | 1992



    Machining railway wheels

    Engineering Index Backfile | 1940


    TOUGHNESS TEST IN RAILROAD WHEELS

    Minicucci, D.J. / Milagres, M. / Boas, R.L.V. et al. | British Library Conference Proceedings | 2007