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Nickel-based superalloy and articles

  • US 8,858,876 B2
  • Filed: 10/31/2012
  • Issued: 10/14/2014
  • Est. Priority Date: 10/31/2012
  • Status: Active Grant
First Claim
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1. A composition of matter comprising:

  • about 6.0 wt % aluminum;

    about 6.5 wt % tantalum;

    about 4.5 wt % chromium;

    about 5.0 wt % tungsten;

    about 2.5 wt % molybdenum;

    about 4 wt % rhenium;

    about 12 wt % cobalt;

    from about 0.2 to about 0.6 wt % hafnium;

    from about 0.01 to about 0.03 wt % carbon;

    from about 0.002 to about 0.006 wt % boron; and

    balance nickel and incidental impurities,wherein the composition exhibits a sustained peak low cycle fatigue life at 1800°

    F./45 ksi of at least 4000 cycles.

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