The effects of tempering on carburized Cr-Mo gear steel were investigated through mechanical and fatigue tests. Specimens were carburized at 900°C for 180 minutes, and then oil quenched at 150°C for 10 minutes of holding time and cooled to room temperature. The subsequent tempering process was performed to 160°C for 90 minutes. Surface hardness and residual compressive stress were decreased by tempering treatment, whereas tensile strength, yield strength and impact energy were increased. Bending fatigue endurance limits for both tempered and untempered specimens were same as 779MPa. The strength of roller contact fatigue is also not greatly influenced by tempering treatment. Thermal distortion for carburized transfer driven gear before and after tempering exhibited a similar distribution. Microstructural changes during tempering were also discussed.


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    Titel :

    The Effect of Tempering on Mechanical and Fatigue Properties in Gas-Carburized Cr-Mo Gear Steel


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Jung, Seung Cheal (Autor:in) / Ahn, Seung Gyun (Autor:in) / Kim, Tae Won (Autor:in) / Kim, Young Woo (Autor:in)

    Kongress:

    International Congress & Exposition ; 1997



    Erscheinungsdatum :

    1997-02-24




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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    Martowibowo, S. Y. | British Library Conference Proceedings | 1997


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    Bending Fatigue Performance of Carburized Gear Steels

    Sieber, Ray | SAE Technical Papers | 1992