Thermomechanical Fatigue Behavior of SiC/Ti-24Al-11Nb [0]8 in Air and Argon Environments

    Published: Jan 1993

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    A series of tension-tension, load-controlled thermomechanical fatigue (TMF) tests was conducted on a titanium aluminide composite in both laboratory air and a flowing argon environment. Results from these tests show that the environment plays an increasingly important role as applied stress levels are decreased. Differences in damage mechanisms between the two environments were observed which correspond to observed variations in TMF lives.


    thermomechanical fatigue (TMF), titanium aluminide composite, argon and air environments, intermetallic matrix composites

    Author Information:

    Bartolotta, PA
    NASA Lewis Research Center, Cleveland, OH

    Verrilli, MJ
    NASA Lewis Research Center, Cleveland, OH

    Committee/Subcommittee: D30.07

    DOI: 10.1520/STP12628S

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