Abstract: An article of manufacture exhibiting cyclic oxidation-hot corrosion resistant properties comprising a non-eutectic nickel-base superalloy consisting essentially of, on a weight basis, 1-9% Re, 0-2% Ti, at least 2% Al, 3-12% Cr, 1-5.9% Ta, 0-0.5% C, 2-12% Co, 2-10% W, less than 1% V, 2-10% Mo, 0-5% Cb, 0-3% Hf, 0-1.5% Zr and 0-0.20% B, the balance being essentially Ni and incidental impurities. Especially preferred are articles of manufacture in the form of a unidirectionally solidified anisotropic metallic body of the above alloy composition.
Abstract: An oxide dispersion-strengthened, nickel-base alloy containing special amounts of chromium, aluminum, tungsten, molybdenum and yttria has a combination of strength properties over a range of temperatures, together with substantial corrosion resistance.
Type:
Grant
Filed:
June 26, 1980
Date of Patent:
June 7, 1983
Assignee:
Inco Research & Development Center, Inc.
Inventors:
Raymond C. Benn, LeRoy R. Curwick, Kenneth R. Andryszak
Abstract: Nickel and iron-nickel base alloys are described together with a rapid solidification process used in the preparation thereof to provide materials useful in the fabrication of parts subject to high temperature operating conditions. The alloys include commercial nickel base superalloys to which a specified amount of boron is added.
Type:
Grant
Filed:
November 19, 1979
Date of Patent:
November 16, 1982
Assignee:
Marko Materials, Inc.
Inventors:
Ranjan Ray, Donald E. Polk, Bill C. Giessen
Abstract: The composition of a nickel base cast alloy for high temperature structural parts is modified by controlled reduction of the aluminum content and increasing the carbon content to significantly reduce the occurrence of base metal cracking in the heat-affected zone during fusion welding operations. The modified nickel base casting alloy is subjected to a pre-weld thermal conditioning in order to prevent strain age cracking of the weldments during post-weld thermal cycling operations.
Type:
Grant
Filed:
January 30, 1980
Date of Patent:
June 22, 1982
Assignee:
The Garrett Corporation
Inventors:
Jeffrey J. Clark, Harry R. Fisk, Larry A. Wallace