A large set of bending fatigue data on carburized steels has been statistically analyzed to quantitatively describe the effects of process and microstructural variables. Increasing demands on gear steels require a broad examination of past bending fatigue research to reveal the primary factors that determine fatigue performance and guide future gear steel design. Fatigue performance was correlated to specimen characteristics such as retained austenite content, case and core grain size, extent of intergranular oxidation, surface roughness, and the case profiles of residual stress, hardness, and carbon content. Prior austenite grain size in the case and surface residual stress were found to most strongly influence bending fatigue endurance limit. A multiple regression model to predict endurance limit achieved an R-squared value of 0.56. Fatigue performance as measured by the high-stress portion of the S-N curve showed significant correlations to surface residual stress and endurance limit; however, a satisfactory regression model could not be constructed. Case grain refinement was most effectively achieved through reheat treatments, while shot peening was found to be the only means to significantly increase compressive surface residual stresses.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Bending Fatigue of Carburized Steels: A Statistical Analysis of Process and Microstructural Parameters


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Matlock, David K. (Autor:in) / Wise, John P. (Autor:in)

    Kongress:

    SAE 2000 World Congress ; 2000



    Erscheinungsdatum :

    06.03.2000




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Bending fatigue of carburized steels: a statistical analysis of process and microstructural parameters

    Wise,J.P. / Matlock,D.K. / Colorado School of Mines,US | Kraftfahrwesen | 2000


    Bending Fatigue of Carburized Steels: A Statistical Analysis of Process and Microstructural Parameters

    Wise, J. P. / Matlock, D. K. / Society of Automotive Engineers | British Library Conference Proceedings | 2000


    Bending Fatigue Performance of Carburized Gear Steels

    Sieber, Ray | SAE Technical Papers | 1992


    Bending fatigue performance of carburized gear steels

    Sieber,R. / Rockwell International,US | Kraftfahrwesen | 1992


    Bending Fatigue Performance of Gas- and Plasma-Carburized Steels

    Cornelissen, Bastiaan E. / Gondesen, Brigitte / Matlock, David K. et al. | SAE Technical Papers | 1999