Single crystal nickel-base superalloy article and method for making

Patent · Tue Oct 13 04:00:00 EDT 1992

OSTI ID:6924565

Wukusick, C S; Buchakjian, L Jr

This patent describes an improved nickel-base superalloy capable of being cast as a single crystal by directional solidification, having an improved balance of high temperature strength and high temperature oxidation and corrosion resistance consisting essentially of, by weight: 7-12% Cr, 1-5% Mo, 3-5% Ti, 3-5% Al, 5-15% Co, 3-12% W, 2-6% Ta, up to 10% Re, up to 2% Cb, up to 3% V, up to 2% Hf, balance Ni and incidental impurities, further characterized wherein the superalloy has no added C, B, and Zr and, if present, the elements, are at impurity levels, the alloy having an Al:Ti ratio from about 0.5 to about 1 while maintaining the Cr:Al ratio from about 1.5-4.

• Assignee: General Electric Co., Cincinnati, OH (United States)
• Patent Number(s): US 5154884; A
• Application Number: PPN: US 7-760860
• OSTI ID: 6924565
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CASTING
CHEMICAL COMPOSITION
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
COBALT
CORROSION RESISTANCE
CRYSTALS
ELEMENTS
FABRICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
MATERIALS
METALS
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
MONOCRYSTALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SOLIDIFICATION
TANTALUM
THERMODYNAMIC PROPERTIES
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSITION ELEMENTS
TUNGSTEN
VANADIUM