A new casting process has been developed for the widely-used unplated aluminum-lead passenger car engine bearing alloy A1-6Pb-4Si. This new process, which imparts a very high quench rate to the alloy, results in a much finer metallurgical structure as compared to the current product. The fine structure is responsible for a significant improvement in bearing fatigue life. Data are presented which demonstrate this improvement both in dynamometer engine testing and in fatigue test machines. Score-seizure testing shows no loss in anti-seizure properties.


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    Title :

    Progress with Aluminum-Lead Crankshaft Bearing Alloys


    Additional title:

    Sae Technical Papers


    Contributors:
    Pratt, G.C. (author) / Whitney, W.J. (author)

    Conference:

    SAE International Congress and Exposition ; 1989



    Publication date :

    1989-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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