Nickel-chromium-molybdenum-vanadium alloy and turbine component

Abstract

A NiCrMoV alloy and a turbine component are disclosed. The NiCrMoV alloy includes at least about 0.06%, at least about 3.40% nickel, between about 0.22% and about 0.30% carbon, up to about 0.60% molybdenum, up to about 0.15% vanadium, up to about 2.00% chromium, up to about 0.012% phosphorus, up to about 0.007% sulfur, up to about 0.10% silicon, up to about 0.002% antimony, up to about 0.008% arsenic, up to about 0.012% tin, and up to about 0.015% aluminum and/or is resistant to embrittlement at temperatures above 700° F.

What is claimed is: 
     
         1 . A NiCrMoV alloy, comprising, by weight:
 between about 0.06% and about 0.12% manganese, at least about 3.40% nickel; between about 0.24% and about 0.30% carbon, up to about 0.60% molybdenum, up to about 0.15% vanadium, up to about 2.00% chromium, up to about 0.012% phosphorus, up to about 0.007% sulfur, up to about 0.10% silicon, up to about 0.002% antimony, up to about 0.008% arsenic, up to about 0.012% tin, and up to about 0.015% aluminum.   
     
     
         2 . The NiCrMoV alloy of  claim 1 , further comprising a balance of iron and incidental impurities. 
     
     
         3 . The NiCrMoV alloy of  claim 1 , wherein the phosphorus is present at a concentration of at least about 0.007%, the sulfur is present at a concentration of at least about 0.006%, the silicon is present at a concentration of at least about 0.05%, or a combination thereof. 
     
     
         4 . The NiCrMoV alloy of  claim 1 , wherein the phosphorus is present at a concentration of at least about 0.007%. 
     
     
         5 . The NiCrMoV alloy of  claim 1 , wherein the sulfur is present at a concentration of at least about 0.006%. 
     
     
         6 . The NiCrMoV alloy of  claim 1 , wherein the silicon is present at a concentration of at least about 0.05%. 
     
     
         7 . The NiCrMoV alloy of  claim 1 , wherein the manganese is present at a concentration of, by weight, at least about 0.06%. 
     
     
         8 . The NiCrMoV alloy of  claim 1 , wherein the molybdenum is present at a concentration of, by weight, at least about 0.35%. 
     
     
         9 . The NiCrMoV alloy of  claim 1 , wherein the vanadium is present at a concentration of, by weight, at least about 0.05%. 
     
     
         10 . The NiCrMoV alloy of  claim 1 , wherein the chromium is present at a concentration of, by weight, at least about 1.50%. 
     
     
         11 . The NiCrMoV alloy of  claim 1 , wherein the nickel is present at a concentration of, by weight, up to about 4.00% nickel. 
     
     
         12 . The NiCrMoV alloy of  claim 1 , wherein the NiCrMoV alloy is resistant to embrittlement at temperatures above 700° F. 
     
     
         13 . The NiCrMoV alloy of  claim 1 , wherein the NiCrMoV alloy is resistant to embrittlement at temperatures above 725° F. 
     
     
         14 . The NiCrMoV alloy of  claim 1 , wherein the NiCrMoV alloy is resistant to embrittlement at temperatures about 750° F. 
     
     
         15 . The NiCrMoV alloy of  claim 1 , wherein oxygen is present at a concentration, by weight, of up to about 0.0075%. 
     
     
         16 . A turbine component including the alloy of  claim 1 . 
     
     
         17 . The turbine component of  claim 16 , wherein the turbine component is in a steam turbine. 
     
     
         18 . The turbine component of  claim 17 , wherein the turbine component is a low pressure rotor. 
     
     
         19 . A NiCrMoV alloy, comprising, by weight:
 between about 0.06% and about 0.12% manganese, at least about 3.40% nickel; between about 0.22% and about 0.30% carbon, up to about 0.60% molybdenum, up to about 0.15% vanadium, up to about 2.00% chromium, up to about 0.012% phosphorus, up to about 0.007% sulfur, up to about 0.10% silicon, up to about 0.002% antimony, up to about 0.008% arsenic, up to about 0.012% tin, and up to about 0.015% aluminum;   wherein the phosphorus is present at a concentration of at least about 0.007%, the sulfur is present at a concentration of at least about 0.006%, the silicon is present at a concentration of at least about 0.05%, or a combination thereof.   
     
     
         20 . A NiCrMoV alloy, comprising:
 nickel;   chromium;   molybdenum;   vanadium; and   manganese, the manganese being at a concentration, by weight, of at least about 0.06%;   wherein the NiCrMoV alloy is resistant to embrittlement at temperatures above 700° F.