A microstructural fatigue crack nucleation model is developed for cast irons with graphite inclusions of different shapes, based on Eshelby’s solution for ellipsoidal inclusions and the Tanaka-Mura-Wu model for fatigue crack nucleation. This model is used to analyze ductile cast iron with nodular graphite microstructure, gray cast iron with flake-like graphite microstructure, and compacted graphite iron with vermicular graphite microstructure. Excellent agreements are found between the model predictions and the experimental data or the Coffin-Manson-Basquin best-fit correlations. This has established an analytical microstructure-fatigue prediction approach, which saves the time and cost of fatigue design with regards to these materials.


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    Titel :

    Microstructure-Fatigue Relationships for Cast Irons


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Wu, Xijia (Autor:in)

    Kongress:

    WCX SAE World Congress Experience ; 2020



    Erscheinungsdatum :

    2020-04-14




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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