STP520: Thermal Fatigue Characterization of Cast Cobalt and Nickel-Base Superalloys

    Mowbray, DF
    Manager, Mechanics of Materials, and manager, Structural Materials Engineering, General Electric Company, Schenectady, N. Y.

    Woodford, DA
    Senior metallurgical engineer, Materials and Processes Laboratory, General Electric Company, Schenectady, N. Y.

    Brandt, DE
    Manager, Mechanics of Materials, and manager, Structural Materials Engineering, General Electric Company, Schenectady, N. Y.

    Pages: 11    Published: Jan 1973


    Abstract

    Tapered disk thermal fatigue tests have been conducted on one cobalt- and one nickel-base superalloy for the purpose of characterizing crack growth behavior. It is shown that linear elastic fracture mechanics can be used to represent the crack growth rate data, and that the propagation mode prefers favorably-oriented carbides.

    Keywords:

    fatigue (materials), fatigue tests, superalloys, nickel containing alloys, cobalt containing alloys, fracturing, crack propagation, cyclic loads


    Paper ID: STP38858S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP38858S


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