Certain embodiments of a method for increasing the strength and toughness of a titanium alloy include plastically deforming a titanium alloy at a temperature in an alpha-beta phase field of the titanium alloy to an equivalent plastic deformation of at least a 25% reduction in area. After plastically
Certain embodiments of a method for increasing the strength and toughness of a titanium alloy include plastically deforming a titanium alloy at a temperature in an alpha-beta phase field of the titanium alloy to an equivalent plastic deformation of at least a 25% reduction in area. After plastically deforming the titanium alloy in the alpha-beta phase field, the titanium alloy is not heated to or above the beta transus temperature of the titanium alloy. After plastic deformation, the titanium alloy is heat treated at a heat treatment temperature less than or equal to the beta transus temperature minus 20° F. (11.1° C.).
대표청구항▼
1. A method for increasing the strength and fracture toughness of a titanium alloy, the method consisting of: plastically deforming a titanium alloy to an equivalent plastic deformation of at least a 25% reduction in area at a temperature starting at or above a beta transus temperature of the titani
1. A method for increasing the strength and fracture toughness of a titanium alloy, the method consisting of: plastically deforming a titanium alloy to an equivalent plastic deformation of at least a 25% reduction in area at a temperature starting at or above a beta transus temperature of the titanium alloy to a final plastic deformation temperature in an alpha-beta phase field of the titanium alloy and not less than 222° C. below the beta transus temperature of the titanium alloy, wherein at least a 25% reduction in area of the titanium alloy occurs in the alpha-beta phase field of the titanium alloy, and wherein after plastically deforming the titanium alloy the titanium alloy is not heated to a temperature at or above a beta transus temperature of the titanium alloy;optionally, cooling the titanium alloy; andheat treating the titanium alloy, wherein heat treating the titanium alloy consists of a one-step heat treatment at a heat treatment temperature less than or equal to the beta transus temperature minus 20° F. for a heat treatment time sufficient to produce a heat treated alloy, wherein a fracture toughness (KIc) of the heat treated alloy is related to a yield strength (YS) of the heat treated alloy according to the equation: KIc≥173−(0.9)YS. 2. The method of claim 1, wherein the fracture toughness (KIc) of the heat treated alloy is related to the yield strength (YS) of the heat treated alloy according to the equation: 217.6−(0.9)YS≥KIc≥173−(0.9)YS. 3. The method of claim 1 wherein the fracture toughness (KIc) of the heat treated alloy is related to the yield strength (YS) of the heat treated alloy according to the equation: KIc≥217.6−(0.9)YS. 4. The method of claim 1, wherein plastically deforming the titanium alloy comprises plastically deforming the titanium alloy to an equivalent plastic deformation in the range of greater than a 25% reduction in area to a 99% reduction in area. 5. The method of claim 1, wherein heat treating the titanium alloy comprises heating the titanium alloy at a heat treatment temperature in the range of 900° F. (482° C.) to 1500° F. (816° C.) for a heat treatment time in the range of 0.5 hours to 24 hours. 6. The method of claim 1, wherein plastically deforming the titanium alloy comprises at least one of forging, rotary forging, drop forging, multi-axis forging, bar rolling, plate rolling, and extruding the titanium alloy. 7. The method of claim 1, wherein the equivalent plastic deformation comprises an actual reduction in area of a cross-section of the titanium alloy. 8. The method of claim 1, wherein plastically deforming the titanium alloy results in an actual reduction in area of a cross-section of the titanium alloy of 5% or less. 9. The method of claim 4, wherein the equivalent plastic deformation comprises an actual reduction in area of a cross-section of the titanium alloy. 10. The method of claim 1, wherein the titanium alloy is a titanium alloy that is capable of retaining beta-phase at room temperature. 11. The method of claim 10, wherein the titanium alloy is selected from a beta titanium alloy, a metastable beta titanium alloy, an alpha-beta titanium alloy, and a near-alpha titanium alloy. 12. The method of claim 10, wherein the titanium alloy is Ti-5Al-5V-5Mo-3Cr alloy. 13. The method of claim 10, wherein the titanium alloy is Ti-15Mo. 14. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy exhibits an ultimate tensile strength in the range of 138 ksi to 179 ksi. 15. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy exhibits a KIc fracture toughness in the range of 59 ksi·in1/2 to 100 ksi·in1/2. 16. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy exhibits a yield strength in the range of 134 ksi to 170 ksi. 17. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy exhibits a percent elongation in the range of 4.4% to 20.5%. 18. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy exhibits an average ultimate tensile strength of at least 166 ksi, an average yield strength of at least 148 ksi, a percent elongation of at least 6%, and a KIc fracture toughness of at least 65 ksi·in1/2. 19. The method of claim 1, wherein after heat treating the titanium alloy, the titanium alloy has an ultimate tensile strength of at least 150 ksi and a KIc fracture toughness of at least 70 ksi·in1/2. 20. A method for thermomechanically treating a titanium alloy to increase strength and fracture toughness, the method consisting of: working a titanium alloy at a working temperature starting from at or up to 200° F. (111° C.) above a beta transus temperature of the titanium alloy to a final temperature not less than 222° C. below the beta transus temperature of the titanium alloy and in an alpha-beta phase field of the titanium alloy, wherein at least a 25% reduction in area of the titanium alloy occurs in the alpha-beta phase field of the titanium alloy, wherein the titanium alloy is not heated above the beta-transus temperature after the at least 25% reduction in area of the titanium alloy in the alpha-beta phase field of the titanium alloy;optionally, cooling the titanium alloy; andheat treating the titanium alloy, wherein heat treating the titanium alloy consists of a one-step heat treatment in a heat treatment temperature range between 900° F. (482° C.) and 1500° F. (816° C.) for a heat treatment time sufficient to produce a heat treated alloy having a fracture toughness (KIc) that is related to the yield strength (YS) of the heat treated alloy according to the equation: KIc≥173−(0.9)YS. 21. The method of claim 20, wherein the heat treatment time is in the range of 0.5 to 24 hours. 22. The method of claim 20, wherein working the titanium alloy provides an equivalent plastic deformation in the range of greater than a 25% reduction in area to a 99% reduction in area. 23. The method of claim 20, wherein working the titanium alloy comprises working the titanium alloy substantially entirely in the alpha-beta phase field. 24. The method of claim 20, wherein working the titanium alloy comprises working the titanium alloy from a temperature at or above the beta transus temperature, into the alpha-beta field, and to a final working temperature in the alpha-beta field. 25. The method of claim 20, wherein the titanium alloy is a titanium alloy that is capable of retaining beta-phase at room temperature. 26. The method of claim 20, wherein after heat treating the titanium alloy, the titanium alloy has an average ultimate tensile strength of at least 166 ksi, an average yield strength of at least 148 ksi, a KIc fracture toughness of at least 65 ksi·in1/2, and a percent elongation of at least 6%. 27. The method of claim 20, wherein the fracture toughness (KIc) of the heat treated alloy is related to the yield strength (YS) of the heat treated alloy according to the equation: 217.6−(0.9)YS≥KIc≥173−(0.9)YS. 28. The method of claim 20, wherein the fracture toughness (KIc) of the heat treated alloy is related to the yield strength (YS) of the heat treated alloy according to the equation: KIc≥217.6−(0.9)YS.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (183)
Oyama Hideto,JPX ; Kida Takayuki,JPX ; Furutani Kazumi,JPX ; Fujii Masamitsu,JPX, .alpha.+.beta. type titanium alloy, a titanium alloy strip, coil-rolling process of titanium alloy, and process for producing a cold-rolled titanium alloy strip.
Naoki Ishii JP; Takashi Kaneko JP; Shin Sumimoto JP; Hideki Yamamoto JP; Ichiro Nagao JP, .beta.-titanium alloy wire, method for its production and medical instruments made by said .beta.-titanium alloy wire.
Suzuki, Akane; Elliott, Andrew John; Gigliotti, Jr., Michael Francis Xavier; Morey, Kathleen Blanche; Schaeffer, Jon Conrad; Subramanian, Pazhayannur, Alumina-forming cobalt-nickel base alloy and method of making an article therefrom.
Ashworth Martin J. ; McGinty Paul P. G.,GBX ; Webster James, Apparatus and method for near net warm forging of complex parts from axi-symmetrical workpieces.
Taguchi Kohei (Kanagawa-ken JPX) Ayada Michihiko (Kanagawa-ken JPX) Shingu Hideo (Kyotofu JPX), Article made of TI-AL intermetallic compound, and method for fabricating the same.
Dupoiron Francois (Le Creusot FRX) Gagnepain Jean-Christophe (Lyon FRX) Cozar Richard (La Fermette FRX) Mayonobe Bernard (Nevers FRX), Austenitic stainless steel having high properties.
Dulmaine Bradford A. (Muhlenberg Township PA) Kosa Theodore (Cumru Township PA) Magee ; Jr. John H. (Exeter Township PA) Schlosser Donald K. (Shillington PA), Austenitic, non-magnetic, stainless steel alloy.
Davidson James A. (2573 Windy Oaks Rd. Germantown TN 38138) Kovacs Paul (3227 S. Mendenhall Rd. Memphis TN 38115), Biocompatible low modulus titanium alloy for medical implants.
Delgado Hugo E. ; Howson Timothy E. ; Hyzak Jack M. ; Antaya Paul D. ; Doherty Thomas F. ; Gargolinski Paul J. ; Jepson Peter R. ; Morra Martin M. ; Shannon ; III James E., Closed-die forging process and rotationally incremental forging press.
Saller, Gabriele; Aigner, Herbert; Bernauer, Josef; Huber, Raimund, Component for use in oil field technology made of a material which comprises a corrosion-resistant austenitic steel alloy.
Wang Kathy K. (Suffern NY) Gustavson Larry J. (Dover NJ) Dumbleton John H. (Ridgewood NJ), Dispersion strengthened cobalt-chromium-molybdenum alloy produced by gas atomization.
Krueger Daniel D. (Cincinnati OH) Kissinger Robert D. (Cincinnati OH) Menzies Richard G. (Wyoming OH) Wukusick Carl S. (Cincinnati OH), Fatigue crack growth resistant nickel-base article and alloy and method for making.
Benz Mark Gilbert ; Raymond Edward Lee ; Kissinger Robert Donald ; Huron Eric Scott ; Blankenship ; Jr. Charles Philip ; Henry Michael Francis, Grain size control in nickel base superalloys.
Mae Yoshiharu (Urawa JPX) Oka Tsutomu (Omiya JPX) Hirano Atsushi (Kitamoto JPX), High strength Ti alloy material having improved workability and process for producing the same.
Chakrabarti Amiya K. (Monroeville PA) Kuhlman George W. (Cleveland OH) Rohde Kristen A. (Cleveland OH), High strength titanium-aluminum alloy having improved fatigue crack growth resistance.
Wang Kathy K. (Suffern NY) Gustavson Larry J. (Dover NJ) Dumbleton John H. (Ridgewood NJ), High strength, low modulus, ductile, biopcompatible titanium alloy.
Smith, Michael P.; Stanley, Janet; Murphy, David S.; Baumgarten, Robert W.; DeMichael, Thomas; Mayers, Stephen L., Integrally bladed rotor airfoil fabrication and repair techniques.
Benz Mark Gilbert ; Henry Michael Francis ; Blankenship ; Jr. Charles Philip ; Murut Aldo Enrique, Isothermal and high retained strain forging of Ni-base superalloys.
Nishida Yoshinori,JPX ; Kume Shoichi,JPX ; Imai Tsunemichi,JPX, Large deformation apparatus, the deformation method and the deformed metallic materials.
Marquardt, Brian; Wood, John Randolph; Freese, Howard L.; Jablokov, Victor R., Metastable beta-titanium alloys and methods of processing the same by direct aging.
Blankenship Charles Philip (Niskayuna NY) Henry Michael Francis (Niskayuna NY) Huron Eric Scott (Westchester OH) Hyzak John Michael (Shrewsbury MA), Method for controlling grain size in Ni-base superalloys.
Amato Richard A. (Cincinnati OH) Woodfield Andrew P. (Fairfield OH) Gigliotti ; Jr. Michael F. X. (Scotia NY) Hughes John R. (Scotia NY) Perocchi Lee C. (Schenectady NY), Method for developing enhanced texture in titanium alloys, and articles made thereby.
Henricks Robert Jacobi (Farmington CT) Ruckle Duane Louis (Enfield CT) Slack Raymond Bender (South Windsor CT), Method for improving fatigue properties of titanium alloy articles.
Eylon Daniel (Dayton OH) Froes Francis H. (Xenia OH), Method for making an integral titanium alloy article having at least two distinct microstructural regions.
Schirra John J. (Guilford CT) Miller John A. (Jupiter FL) Hatala Robert W. (South Windsor CT), Method for producing crack-resistant high strength superalloy articles.
Zhu Yuntian T. ; Lowe Terry C. ; Jiang Honggang ; Huang Jianyu, Method for producing ultrafine-grained materials using repetitive corrugation and straightening.
Eylon Daniel (Dayton OH) Froes Francis H. (Moscow ID), Method for refining the microstructure of beta processed ingot metallurgy titanium alloy articles.
Werz, Ulrich, Method for selectively forming (plastic working) at least one region of a sheet metal layer made from a sheet of spring steel, and a device for carrying out this method.
Semiatin Sheldon L. (Dayton OH) El Soudani Sami M. (Cerritos CA) Vollmer Donald C. (Columbus OH) Thompson Clarence R. (Worthington OH), Method for thermomechanical processing of ingot metallurgy near gamma titanium aluminides to refine grain size and optim.
Champin Bernard (Saint Jorioz both of FRX) Prandi Bernard (Seythenex both of FRX), Method involving modified hot working for the production of a titanium alloy part.
Segal Vladimir (1831-A Wild Oak Cir. Bryan TX 77802) Segal Leonid (1831-A Wild Oak Cir. Bryan TX 77802), Method of and apparatus for processing tungsten heavy alloys for kinetic energy penetrators.
Goller, George Albert; Stonitsch, Raymond Joseph; DiDomizio, Richard, Method of controlling grain size in forged precipitation-strengthened alloys and components formed thereby.
Gerald D. Anderson ; John M. Khoury ; Michael W. Mattice CA; Thomas M. Drouillard CA; Kermit G. Rowe, III ; David Ian Fretwell GB; Alistair Bruce Christian Lovatt GB, Method of enhancing the bending process of a stabilizer bar.
Eylon Daniel (Dayton OH) Froes Francis H. (Xenia OH), Method of making titanium alloy articles having distinct microstructural regions corresponding to high creep and fatigue.
Verpoort Clemens (Fislisbach CHX), Method of manufacturing a workpiece of any given cross-sectional dimensions from an oxide-dispersion-hardened nickel-bas.
Hardee Kenneth L. (Middlefield OH) Ernes Lynne M. (Willoughby OH) Carlson Richard C. (Euclid OH) Thomas David E. (Northbridge MA), Method of preparing a metal substrate of improved surface morphology.
Horita, Zenji; Nakamura, Katsuaki; Neishi, Koji; Nakagaki, Michihiko; Kaneko, Kenji, Method of working metal, metal body obtained by the method and metal-containing ceramic body obtained by the method.
Valiev, Ruslan Zufarovich; Semenova, Irina Petrovna; Yakushina, Evgeniya Borisovna; Salimgareeva, Gul'naz Khalifovna, Nanostructured commercially pure titanium for biomedicine and a method for producing a rod therefrom.
Kuhlman G. William (Shaker Heights OH) Beaumont Richard A. (Avon Lake OH) Carbaugh Daniel F. (Macedonia OH) Anderson David (Brecksville OH) Chakrabarti Amiya K. (Monroeville PA) Kinnear Kenneth P. (M, Nickel base alloy forged parts.
Kuhlman G. William (Shaker Heights OH) Beaumont Richard A. (Avon Lake OH) Carbaugh Daniel F. (Macedonia OH) Anderson David (Brecksville OH) Farrell Al (West Lake OH) Chakrabarti Amiya K. (Monroeville, Nickel base alloy forged parts.
Sabol George P. (Murrysville Boro PA) Barry Robert F. (Monroeville PA), Process for forming seamless tubing of zirconium or titanium alloys from welded precursors.
Wirth Gnter (Rosrath DEX) Grundhoff Karl-Josef (Troisdorf DEX) Schurmann Hartmut (Seelscheid DEX), Process for improving the static and dynamic mechanical properties of (ab<.
Alheritiere Edouard (Ugine FRX) Prandi Bernard (Faverges FRX), Process for treating titanium alloy parts for use as compressor disks in aircraft propulsion systems.
Chakrabarti Amiya K. (Monroeville PA) Kuhlman ; Jr. George W. (Pepper Pike PA) Pishko Robert (Murrysville PA), Processing alpha-beta titanium alloys by beta as well as alpha plus beta forging.
Forbes Jones, Robin M.; Mantione, John V.; De Souza, Urban J.; Thomas, Jean-Philippe; Minisandram, Ramesh S.; Kennedy, Richard L.; Davis, R. Mark, Processing routes for titanium and titanium alloys.
Lee, Barry Andrew; Schrank, Timothy L., Progressive stamping die assembly having transversely movable die station and method of manufacturing a stack of laminae therewith.
Wang Kathy K. (Suffern NY) Gustavson Larry J. (Dover NJ) Dumbleton John H. (Ridgewood NJ), Prosthesis formed from dispersion strengthened cobalt-chromium-molybdenum alloy produced by gas atomization.
Raymond, Edward Lee; Menzies, Richard Gordon; Dyer, Terrence Owen; Link, Barbara Ann; Halter, Richard Frederick; Mechley, Mike Eugene; Visalli, Francis Mario; Srivatsa, Shesh Krishna, Quasi-isothermal forging of a nickel-base superalloy.
Durney,Max W.; Pendley,Alan D.; Rappaport,Irving S., Techniques for designing and manufacturing precision-folded, high strength, fatigue-resistant structures and sheet therefor.
Durney,Max W.; Pendley,Alan D.; Rappaport,Irving S., Techniques for designing and manufacturing precision-folded, high strength, fatigue-resistant structures and sheet therefor.
Barbier,Blandine; Gallois,Philippe; Mons,Claude; Venard,Agathe; Vignolles,Pascal, Thin parts made of β or quasi-β titanium alloys; manufacture by forging.
Kuramoto,Shigeru; Furuta,Tadahiko; Hwang,Junghwan; Chen,Rong; Suzuki,Nobuaki; Nishino,Kazuaki; Saito,Takashi, Titanium alloy and process for producing the same.
Chakrabarti Amiya K. (Monroeville PA) Kuhlman ; Jr. George W. (Pepper Pike OH) Pishko Robert (Pittsburgh PA), Titanium alpha-beta alloy fabricated material and process for preparation.
Paxson Allen J. (Cincinnati OH) Shamblen Clifford E. (Cincinnati OH), Titanium article having improved response to ultrasonic inspection, and method therefor.
Ogawa Atsushi (Kawasaki JPX) Minakawa Kuninori (Kawasaki JPX) Takahashi Kazuhide (Kawasaki JPX), Titanium base alloy for excellent formability and method of making thereof and method of superplastic forming thereof.
Bernard Patrick Bewlay ; Michael Francis Xavier Gigliotti, Jr. ; David Ulrich Furrer ; Gangshu Shen ; Jacek Marian Franczak, Titanium processing methods for ultrasonic noise reduction.
Fujii, Hideki; Takayama, Isamu; Yamashita, Yoshito; Ishii, Mitsuo; Takahashi, Kazuhiro, Titanium sheet, plate, bar or wire having high ductility and low material anisotropy and method of producing the same.
Tetyukhin,Vladislav Valentinovich; Zakharov,Jury Ivanovich; Levin,Igor Vasilievich, Titanium-based alloy and method of heat treatment of large-sized semifinished items of this alloy.
Yuntian T. Zhu ; Terry C. Lowe ; Ruslan Z. Valiev RU; Vladimir V. Stolyarov RU; Vladimir V. Latysh RU; Georgy J. Raab RU, Ultrafine-grained titanium for medical implants.
Oyama, Hideto; Kida, Takayuki; Furutani, Kazumi; Fujii, Masamitsu, α+ß type titanium alloy, process for producing titanium alloy, process for coil rolling, and process for producing cold-rolled coil of titanium alloy.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.