Nickel-based alloy and turbine component having nickel-based alloy

Abstract

A nickel-based alloy and a turbine component are disclosed. The alloy includes, by weight, between about 0.8% and about 1.3% hafnium, between about 5.7% and about 6.4% aluminum, between about 7.0% and about 10.0% cobalt, up to about 0.1% carbon, up to about 8.7% chromium, up to about 0.6% molybdenum, up to about 9.7% tungsten, up to about 0.9% titanium, up to about 0.02% boron, up to about 0.1% manganese, up to about 0.06% silicon, up to about 0.01% phosphorus, up to about 0.004% sulfur, up to about 0.02% zirconium, up to about 1.8% niobium, up to about 0.1% vanadium, up to about 0.1% copper, up to about 0.2% iron, up to about 0.003% magnesium, up to about 0.002% oxygen, up to about 0.002% nitrogen, and a balance nickel. The turbine component is a turbine bucket, a turbine nozzle, or any other suitable turbine component including the alloy.

What is claimed is: 
     
         1 . A nickel-based alloy, comprising, by weight:
 between about 0.8% and about 1.3% hafnium, between about 5.7% and about 6.4% aluminum, between about 7.0% and about 10.0% cobalt, up to about 0.1% carbon, up to about 8.7% chromium, up to about 0.6% molybdenum, up to about 9.7% tungsten, up to about 0.9% titanium, up to about 0.02% boron, up to about 0.1% manganese, up to about 0.06% silicon, up to about 0.01% phosphorus, up to about 0.004% sulfur, up to about 0.02% zirconium, up to about 1.8% niobium, up to about 0.1% vanadium, up to about 0.1% copper, up to about 0.2% iron, up to about 0.003% magnesium, up to about 0.002% oxygen, up to about 0.002% nitrogen, and a balance nickel.   
     
     
         2 . The alloy of  claim 1 , wherein the hafnium is present at a concentration of, by weight, between about 0.8% and about 1.1%. 
     
     
         3 . The alloy of  claim 1 , further comprising tantalum at a concentration of, by weight, between about 3.1% and about 3.6%. 
     
     
         4 . The alloy of  claim 1 , wherein the alloy includes a directionally-solidified microstructure. 
     
     
         5 . The alloy of  claim 1 , wherein the alloy is a portion of a turbine bucket. 
     
     
         6 . The alloy of  claim 1 , wherein the hafnium is present at a concentration of, by weight, about 1.0% and about 1.3%. 
     
     
         7 . The alloy of  claim 1 , further comprising niobium at a concentration of, by weight, between about 1.6% and about 1.8%. 
     
     
         8 . The alloy of  claim 1 , wherein the alloy includes an equiaxed microstructure. 
     
     
         9 . The alloy of  claim 1 , wherein the alloy is a portion of a turbine nozzle. 
     
     
         10 . The alloy of  claim 1 , wherein the carbon is present at a concentration of, by weight, between about 0.07% and about 0.1%, the chromium is present at a concentration of, by weight, between about 8.0% and about 8.7%, the molybdenum is present at a concentration of, by weight, up to about 0.6%, the tungsten is present at a concentration of, by weight, between about 9.3% and about 9.7%, the titanium is present at a concentration of, by weight, up to about 0.9%, the boron is present at a concentration of, by weight, up to about 0.02%, the manganese is present at a concentration of, by weight, up to about 0.1%, the silicon is present at a concentration of, by weight, up to about 0.06%, the phosphorus is present at a concentration of, by weight, up to about 0.01%, the sulfur is present at a concentration of, by weight, up to about 0.004%, the zirconium is present at a concentration of, by weight, up to about 0.02%, the vanadium is present at a concentration of, by weight, up to about 0.1%, the copper is present at a concentration of, by weight, up to about 0.1%, the iron is present at a concentration of, by weight, up to about 0.2%, the magnesium is present at a concentration of, by weight, up to about 0.003%, the oxygen is present at a concentration of, by weight, up to about 0.002%, and the nitrogen is present at a concentration of, by weight, up to about 0.002%. 
     
     
         11 . A turbine bucket comprising an alloy, the alloy comprising:
 between about 0.8% and about 1.3% hafnium, between about 5.7% and about 6.4% aluminum, between about 7.0% and about 10.0% cobalt, up to about 0.1% carbon, up to about 8.7% chromium, up to about 0.6% molybdenum, up to about 9.7% tungsten, up to about 0.9% titanium, up to about 0.02% boron, up to about 0.1% manganese, up to about 0.06% silicon, up to about 0.01% phosphorus, up to about 0.004% sulfur, up to about 0.02% zirconium, up to about 1.8% niobium, up to about 0.1% vanadium, up to about 0.1% copper, up to about 0.2% iron, up to about 0.003% magnesium, up to about 0.002% oxygen, up to about 0.002% nitrogen, and a balance nickel.   
     
     
         12 . The turbine bucket of  claim 11 , wherein the hafnium is present at, by weight, between about 0.8% and about 1.1%. 
     
     
         13 . The turbine bucket of  claim 11 , further comprising tantalum at, by weight, between about 3.1% and about 3.6%. 
     
     
         14 . The turbine bucket of  claim 11 , wherein the alloy includes a directionally-solidified microstructure. 
     
     
         15 . The turbine bucket of  claim 11 , wherein the carbon is present at a concentration of, by weight, between about 0.07% and about 0.1%, the chromium is present at a concentration of, by weight, between about 8.0% and about 8.7%, the molybdenum is present at a concentration of, by weight, up to about 0.6%, the tungsten is present at a concentration of, by weight, between about 9.3% and about 9.7%, the titanium is present at a concentration of, by weight, up to about 0.9%, the boron is present at a concentration of, by weight, up to about 0.02%, the manganese is present at a concentration of, by weight, up to about 0.1%, the silicon is present at a concentration of, by weight, up to about 0.06%, the phosphorus is present at a concentration of, by weight, up to about 0.01%, the sulfur is present at a concentration of, by weight, up to about 0.004%, the zirconium is present at a concentration of, by weight, up to about 0.02%, the vanadium is present at a concentration of, by weight, up to about 0.1%, the copper is present at a concentration of, by weight, up to about 0.1%, the iron is present at a concentration of, by weight, up to about 0.2%, the magnesium is present at a concentration of, by weight, up to about 0.003%, the oxygen is present at a concentration of, by weight, up to about 0.002%, and the nitrogen is present at a concentration of, by weight, up to about 0.002%. 
     
     
         16 . A turbine nozzle comprising an alloy, the alloy comprising:
 between about 0.8% and about 1.3% hafnium, between about 5.7% and about 6.4% aluminum, between about 7.0% and about 10.0% cobalt, up to about 0.1% carbon, up to about 8.7% chromium, up to about 0.6% molybdenum, up to about 9.7% tungsten, up to about 0.9% titanium, up to about 0.02% boron, up to about 0.1% manganese, up to about 0.06% silicon, up to about 0.01% phosphorus, up to about 0.004% sulfur, up to about 0.02% zirconium, up to about 1.8% niobium, up to about 0.1% vanadium, up to about 0.1% copper, up to about 0.2% iron, up to about 0.003% magnesium, up to about 0.002% oxygen, up to about 0.002% nitrogen, and a balance nickel.   
     
     
         17 . The turbine nozzle of  claim 16 , wherein the hafnium is present at a concentration of, by weight, between about 1.0% and about 1.3%. 
     
     
         18 . The turbine nozzle of  claim 16 , further comprising niobium at a concentration of, by weight, between about 1.6% and about 1.8%. 
     
     
         19 . The turbine nozzle of  claim 16 , wherein the alloy includes an equiaxed microstructure. 
     
     
         20 . The turbine nozzle of  claim 16 , wherein the carbon is present at a concentration of, by weight, between about 0.07% and about 0.1%, the chromium is present at a concentration of, by weight, between about 8.0% and about 8.7%, the molybdenum is present at a concentration of, by weight, up to about 0.6%, the tungsten is present at a concentration of, by weight, between about 9.3% and about 9.7%, the titanium is present at a concentration of, by weight, up to about 0.9%, the boron is present at a concentration of, by weight, up to about 0.02%, the manganese is present at a concentration of, by weight, up to about 0.1%, the silicon is present at a concentration of, by weight, up to about 0.06%, the phosphorus is present at a concentration of, by weight, up to about 0.01%, the sulfur is present at a concentration of, by weight, up to about 0.004%, the zirconium is present at a concentration of, by weight, up to about 0.02%, the vanadium is present at a concentration of, by weight, up to about 0.1%, the copper is present at a concentration of, by weight, up to about 0.1%, the iron is present at a concentration of, by weight, up to about 0.2%, the magnesium is present at a concentration of, by weight, up to about 0.003%, the oxygen is present at a concentration of, by weight, up to about 0.002%, and the nitrogen is present at a concentration of, by weight, up to about 0.002%.