Single crystal nickel-based superalloy
June 29, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re29920 3765879 Directionally solidified eutectic γ+ଲ nickel-base superalloys Directionally solidified eutectic γ-γ' nickel-base superalloys Heat treated superalloy single crystal article and process Cast nickel-base alloy article Heat treated superalloy single crystal article and process Single crystal nickel superalloy Transverse ductile fiber reinforced eutectic nickel-base superalloys Single crystal nickel superalloy InventorApplicationNo. 905462 filed on 06/29/1992US Classes:420/448, Molybdenum or tungsten containing148/404, Directionally solidified148/410, Chromium containing415/200, Specific casing or vane material416/241R, Coating, specific composition or characteristic420/443Rare earth, magnesium or alkaline earth metal containingExaminersPrimary: Andrews, MelvynAssistant: Phipps, Margery S. Attorney, Agent or FirmForeign Patent References
International ClassC22C 019/05AbstractThis invention relates to a nickel-based superalloy comprising the following elements in percent by weight: from about 5.0 to about 7.0 percent rhenium, from about 1.8 to about 4.0 percent chromium, from about 1.5 to about 9.0 percent cobalt, from about 7.0 to about 10.0 percent tantalum, from about 3.5 to about 7.5 percent tungsten, from about 5.0 to about 7.0 percent aluminum, from about 0.1 to about 1.2 percent titanium, from about 0 to about 0.5 percent columbium, from about 0.25 to about 2.0 percent molybdenum, from about 0 to about 0.15 percent hafnium, and the balance nickel+incidental impurities, the superalloy having a phasial stability number Nv3B less than about 2.10.Other References
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