Report describes experiments to determine effects of gradient of temperature and rate of solidification on microstructure and fatigue properties of nickel-based superalloy MAR-M246(Hf). Enhancement of properties extends lifespans of objects, including turbo-pump blades of Space Shuttle Main Engines. Results indicate significant improvements in fatigue properties derived through manipulation of parameters of directional solidification. Particularly MAR-M246(Hf) for turbine blades contains small, well-dispersed blocky carbide and microstructure with small distances between dendrite arms, and without eutectic phase.


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    Titel :

    Conditions Of Directional Solidification Affect Superalloy


    Beteiligte:
    Schmidt, D. D. (Autor:in) / Alter, W. S. (Autor:in) / Hamilton, W. D. (Autor:in) / Parr, R. A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1992-11-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :




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