Mechanically alloyed nickel-base composition having improved hot formability characteristics
AssigneeInco Alloys International, Inc.
InventorsJon M. Poole, Sarwan K. Mannan, Howard W. Sizek
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Abstract
A mechanically alloyed composition of matter containing 30-40% chromium, 0-15% cobalt, 0-10% iron, 0.2-1.0% aluminum, 0.3-1.2% titanium, greater than 1-5% tantalum and/or niobium, 0.2-1% yttria, usual processing and trace impurities, and the balance nickel. The addition of tantalum improves the workability characteristics of the alloy. The alloy is particularly useful for molten glass spinners.
Claims14
A mechanically alloyed composition of matter consisting essentially of in weight percent about 30-40% chromium, up to about 15% cobalt, up to about 10% iron, about 0.2%-1.0% aluminum, about 0.3-1% titanium, a carbide former selected from the group consisting of tantalum and niobium in a range at least 1.3% to about 5%, about 0.2-1% yttria, up to about 0.5% zirconium, up to about 1% hafnium, up to about 1% vanadium up to about 2% manganese, up to about 0.05% boron, up to about 0.2% carbon, up to about 0.2% nitrogen, up to about 0.6% oxygen, up to about 1% of the group consisting of silicon, tungsten, rhenium, molybdenum and copper, standard trace commercial impurities, and the balance nickel.
A mechanically alloyed composition of matter consisting essentially of in weight percent of about 30-40% chromium, about 5-25% cobalt, about 0.5-10% iron, about 0.2-0.6% aluminum, about 0.3-1.2% titanium, up to about 0.15% carbon, about 0.2-1% of yttria in a yttria-containing oxidic phase, up to about 0.7% oxygen inclusive of the oxygen in yttria, up to about 0.3% nitrogen with the proviso that the weight of said titanium is at least about 1.5 times the weight of nitrogen, up to about 0.4% zirconium, up to about 1% hafnium, up to about 1% silicon, up to about 2% manganese, up to about 0.05% boron, a carbide former selected from the group consisting of tantalum and niobium in a range at least 1.3% to about 5%, up to about 1% molybdenum, up to about 1% tungsten, up to about 1% rhenium, up to about 1% total yttrium and lanthanides provided that the total of hafnium, silicon, manganese, boron, niobium, tantalum, molybdenum, tungsten, rhenium, yttrium and the lanthanides does not exceed about 10%, the balance of the composition being essentially nickel.
Dependencies are inferred from the claim text.