Metal treatment – Stock – Directionally solidified
Patent
1994-05-03
1996-02-06
Yee, Deborah
Metal treatment
Stock
Directionally solidified
148428, 420448, C22C 1905
Patent
active
054893461
ABSTRACT:
This invention relates to a hot corrosion resistant nickel-based superalloy comprising the following elements in percent by weight: from about 11.5 to about 13.5 percent chromium, from about 5.5 to about 8.5 percent cobalt, from about 0.40 to about 0.55 percent molybdenum, from about 4.5 to about 5.5 percent tungsten, from about 4.5 to about 5.8 percent tantalum, from about 0.05 to about 0.25 percent columbium, from about 3.4 to about 3.8 percent aluminum, from about 4.0 to about 4.4 percent titanium, from about 0.01 to about 0.06 percent hafnium, and the balance nickel plus incidental impurities, the superalloy having a phasial stability number N.sub.V3B less than about 2.45. Single crystal articles can be suitably made from the superalloy of this invention. The article can be a component for a gas turbine engine and, more particularly, the component can be a gas turbine blade or gas turbine vane.
REFERENCES:
patent: 4207098 (1980-06-01), Shaw
patent: 4582548 (1986-04-01), Harris et al.
patent: 4643782 (1987-02-01), Harris et al.
patent: 4677035 (1987-06-01), Fiedler et al.
patent: 4885216 (1989-12-01), Naik
patent: 4957703 (1990-09-01), Lawrence et al.
patent: 5069873 (1991-12-01), Harris et al.
patent: 5154884 (1992-10-01), Wukusick et al.
"Phacomp Revisited", by H. J. Murphy, C. T. Sims and A. M. Beltran, vol. 1, Int. Symposium on Structural Stability in Superalloys (1968).
"Superalloy Developments for Aero and Industrial Gas Turbines" by G. L. Erickson, Reprint ASM International, Mar. 1994.
"Polycrystalline Cast Superalloys", by Gary L. Erickson, Reprint-Metals Handbook, vol. 1, 10th Edition: Properties and Selection (1989).
"Development of a New Single Crystal Superalloy for Industrial Gas Turbine Blades", by T. Khan and P. Caron, High Temperature Materials for Power Engineering 1990, Part II (Sep. 1990).
Dee James D.
SPS Technologies, Inc.
Yee Deborah
LandOfFree
Hot corrosion resistant single crystal nickel-based superalloys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot corrosion resistant single crystal nickel-based superalloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot corrosion resistant single crystal nickel-based superalloys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2173311