US2012076686A1PendingUtilityA1

High strength alpha/beta titanium alloy

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Assignee: BRYAN DAVID JPriority: Sep 23, 2010Filed: May 16, 2011Published: Mar 29, 2012
Est. expirySep 23, 2030(~4.2 yrs left)· nominal 20-yr term from priority
Inventors:David J. BryanJohn V. MantioneThomas Bayha
C22F 1/18A61L 27/06C22F 1/183B62D 29/008C22C 14/00B62D 29/00
41
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Claims

Abstract

An alpha/beta titanium alloy comprising, in percent by weight based on total alloy weight: 3.9 to 4.5 aluminum; 2.2 to 3.0 vanadium; 1.2 to 1.8 iron; 0.24 to 0.30 oxygen; up to 0.08 carbon; up to 0.05 nitrogen; up to 0.015 hydrogen ; titanium; and up to a total of 0.30 of other elements. A non-limiting embodiment of the alpha/beta titanium alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, exhibits a yield strength in the range of 120 ksi (827.4 MPa) to 155 ksi (1,069 MPa), exhibits an ultimate tensile strength in the range of 130 ksi (896.3 MPa) to 165 ksi (1,138 MPa), and exhibits a ductility in the range of 12 to 30 percent elongation.

Claims

exact text as granted — not AI-modified
1 . An alpha/beta titanium alloy comprising, in percent by weight based on total alloy weight:
 3.9 to 4.5 aluminum;   2.2 to 3.0 vanadium;   1.2 to 1.8 iron;   0.24 to 0.30 oxygen;   up to 0.08 carbon;   up to 0.05 nitrogen;   up to 0.015 hydrogen   titanium; and   up to a total of 0.30 of other elements.   
     
     
         2 . The alpha/beta titanium alloy of  claim 1 , wherein:
 the up to a total of 0.30 of other elements includes at least one of boron, tin, zirconium, molybdenum, chromium, nickel, silicon, copper, niobium, tantalum, manganese, yttrium and cobalt;   the level of each of boron and yttrium, if present, is less than 0.005; and   the level each of tin, zirconium, molybdenum, chromium, nickel, silicon, copper, niobium, tantalum, manganese, and cobalt, if present, is no greater than 0.10.   
     
     
         3 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits a yield strength of at least 120 ksi (827.4 MPa). 
     
     
         4 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits an ultimate tensile strength of at least 130 ksi (896.3 MPa). 
     
     
         5 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits a ductility of at least 12 percent elongation. 
     
     
         6 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value of at least 6.4, exhibits a yield strength of at least 120 ksi (827.4 MPa), exhibits an ultimate tensile strength of at least 130 ksi (896.3 MPa), and exhibits a ductility of at least 12 percent elongation. 
     
     
         7 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits a yield strength in the range of 120 ksi (827.4 MPa) to 155 ksi (1,069 MPa). 
     
     
         8 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits an ultimate tensile strength in the range of 130 ksi (896.3 MPa) to 165 ksi (1,138 MPa). 
     
     
         9 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits a ductility in the range of 12 to 30 percent elongation. 
     
     
         10 . The alpha/beta titanium alloy of  claim 1 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, exhibits a yield strength in the range of 120 ksi (827.4 MPa) to 155 ksi (1,069 MPa), exhibits an ultimate tensile strength in the range of 130 ksi (896.3 MPa) to 165 ksi (1,138 MPa), and exhibits a ductility in the range of 12 to 30 percent elongation. 
     
     
         11 . An alpha/beta titanium alloy consisting essentially of, in percent by weight based on total alloy weight:
 3.9 to 4.5 aluminum;   2.2 to 3.0 vanadium;   1.2 to 1.8 iron;   0.24 to 0.30 oxygen;   up to 0.08 carbon;   up to 0.05 nitrogen;   up to 0.015 hydrogen titanium; and   up to a total of 0.30 of other elements.   
     
     
         12 . The alpha/beta titanium alloy of  claim 11 , wherein:
 the up to a total of 0.30 of other elements includes at least one of boron, tin, zirconium, molybdenum, chromium, nickel, silicon, copper, niobium, tantalum, manganese, yttrium and cobalt;   the level of each of boron and yttrium, if present, is less than 0.005; and   the level of each of tin, zirconium, molybdenum, chromium, nickel, silicon, copper, niobium, tantalum, manganese, and cobalt, if present, is no greater than 0.10.   
     
     
         13 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits a yield strength of at least 120 ksi (827.4 MPa). 
     
     
         14 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits an ultimate tensile strength of at least 130 ksi (896.3 MPa). 
     
     
         15 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value of at least 6.4 and exhibits a ductility of at least 12 percent elongation. 
     
     
         16 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value of at least 6.4, exhibits a yield strength of at least 120 ksi (827.4 MPa), exhibits an ultimate tensile strength of at least 130 ksi (896.3 MPa), and exhibits a ductility of at least 12 percent elongation. 
     
     
         17 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits a yield strength in the range of 120 ksi (827.4 MPa) to 155 ksi (1,069 MPa). 
     
     
         18 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits an ultimate tensile strength in the range of 130 ksi (896.3 MPa) to 165 ksi (1,138 MPa). 
     
     
         19 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, and exhibits a ductility in the range of 12 to 30 percent elongation. 
     
     
         20 . The alpha/beta titanium alloy of  claim 11 , wherein the alloy comprises an aluminum equivalent value in the range of 6.4 to 7.2, exhibits a yield strength in the range of 120 ksi (827.4 MPa) to 155 ksi (1,069 MPa), exhibits an ultimate tensile strength in the range of 130 ksi (896.3 MPa) to 165 ksi (1,138 MPa), and exhibits a ductility in the range of 12 to 30 percent elongation. 
     
     
         21 . An article of manufacture comprising the alloy of  claim 1 . 
     
     
         22 . The article of manufacture of  claim 21 , wherein the article of manufacture consists of the alloy of  claim 1 . 
     
     
         23 . The article of manufacture of  claim 21 , wherein the article of manufacture is selected from an aircraft engine component, an aircraft structural component, an automotive component, a medical device component, a sports equipment component, a marine applications component, and a chemical processing equipment component. 
     
     
         24 . The article of manufacture of  claim 22 , wherein the article of manufacture is selected from an aircraft engine component, an aircraft structural component, an automotive component, a medical device component, a sports equipment component, a marine applications component, and a chemical processing equipment component. 
     
     
         25 . An article of manufacture comprising the alloy of  claim 11 . 
     
     
         26 . The article of manufacture of  claim 25 , wherein the article of manufacture consists of the alloy of  claim 11 . 
     
     
         27 . The article of manufacture of  claim 25 , wherein the article of manufacture is selected from an aircraft engine component, an aircraft structural component, an automotive component, a medical device component, a sports equipment component, a marine applications component, and a chemical processing equipment component. 
     
     
         28 . The article of manufacture of  claim 26 , wherein the article of manufacture is selected from an aircraft engine component, an aircraft structural component, an automotive component, a medical device component, a sports equipment component, a marine applications component, and a chemical processing equipment component.

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