EP1392876B1 - Titanium-base alloy - Google Patents

Titanium-base alloy Download PDF

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Publication number
EP1392876B1
EP1392876B1 EP02739008.7A EP02739008A EP1392876B1 EP 1392876 B1 EP1392876 B1 EP 1392876B1 EP 02739008 A EP02739008 A EP 02739008A EP 1392876 B1 EP1392876 B1 EP 1392876B1
Authority
EP
European Patent Office
Prior art keywords
alloy
titanium
max
carbon
ductility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02739008.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1392876A1 (en
Inventor
Vladislav Valentinovich Tetyukhin
Vladimir Grigoryevich Smirnov
Igor Vasilyevich Levin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VERKHNAYA SALDA METALLURG PRODUCTION ASS
Verkhnaya Salda Metallurgical Production Association
Boeing Co
Original Assignee
VERKHNAYA SALDA METALLURG PRODUCTION ASS
Verkhnaya Salda Metallurgical Production Association
Boeing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VERKHNAYA SALDA METALLURG PRODUCTION ASS, Verkhnaya Salda Metallurgical Production Association, Boeing Co filed Critical VERKHNAYA SALDA METALLURG PRODUCTION ASS
Publication of EP1392876A1 publication Critical patent/EP1392876A1/en
Application granted granted Critical
Publication of EP1392876B1 publication Critical patent/EP1392876B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium

Definitions

  • the invention relates to the non-ferrous metallurgy, especially to the development of new titanium-base alloys offering high formability when seamless cold-worked tubes are manufactured for use in hydraulic systems of aerospace applications and sea vessels.
  • titanium alloys Due to their high strength, light weight and corrosion resistance titanium alloys are used in hydraulic systems of aerospace applications where pipe fittings are produced by welding or highly elastic pressing.
  • alloy Ti-3Al-2.5V One of known industrial titanium alloys, used in the hydraulic systems, is the alloy Ti-3Al-2.5V. This alloy features high formability during cold rolling and allows to produce fittings by elastic pressing at minimum values of yield point 515 MPa and ultimate strength 620 MPa (AMS 4943D, Seamless Annealed Pipes for Hydraulic Systems, Made of Alloy Ti-3Al-2.5V, UNSR56320).
  • Titanium alloy of the following composition in mass % is also known: Aluminum 2.5 - 4.5 Vanadium 2.0 - 3.0 Molybdenum 0.5 - 2.0 Zirconium 0.5 - 2.0 Iron 0.20 max Nitrogen 0.03 max Oxygen 0.15 max
  • This alloy is applicable for hot working, may be used for manufacture of hot-worked and seamless cold-worked pipes, possesses a favorable combination of high strength, formability and corrosion resistance but its ductility is insufficient to flare the pipe or to produce fittings by elastic pressing.
  • JP 07 054081 A discloses titanium alloy compositions with improved properties in regard of corrosion resistance, cold-working and welding, to be used as piping material in chemical, energy of aircraft industry.
  • the titanium alloy comprises (in wt. %): A1 (1.5-4.5%); V (1.5-4.5%); Mo (0.1-2.5%); Zr (0.1-10%); and impurities of C, H, O, N, Fe, Y can be present in the alloy.
  • the object of the invention is to propose titanium alloy possessing a combination of high strength, formability and corrosion resistance, suitable for manufacture of seamless cold-worked pipes for hydraulic systems of aerospace applications and sea vessels as well as for manufacture of pipe fittings by the elastic pressing method.
  • titanium-base alloy containing aluminum, vanadium, molybdenum, zirconium, iron, nitrogen and additional carbon at the following content of components, mass %: Aluminum 2.5 - 4.0 Vanadium 2.5 - 4.0 Molybdenum 2.0 - 3.5 Zirconium 0.4 - 1.5 Iron 0.25 max Nitrogen 0.03 max Oxygen 0.15 max Carbon 0.01 - 0,1 Other impurities, total 0.3 max Titanium balance
  • This titanium-base alloy may also additionally contain palladium or ruthenium in the following quantities, mass %: Palladium 0.03 - 0.1 Ruthenium 0.03 - 0.3
  • the high ductility during cold rolling and expansion of the pipes is achieved due to higher content of the ⁇ -phase which increases the plasticity as a result of large number of sliding planes in the crystal lattice and of the deformation of the ⁇ -phase within the ⁇ -phase under the isostatic compression.
  • zirconium and interstitial impurities content causes the increase in the ⁇ -phase quantity and strength but reduces the ductility.
  • Increase in the ⁇ -stabilizer content reduces the alloy stability, causes grain growth during the heat treatment which also reduces the alloy ductility.
  • the carbon content is below 0.01%, the yield point of the alloy is insufficient to ensure the performance capability of the piping in hydraulic systems.
  • the carbon content exceeds 0.1% the ductility of the alloy decreases at pipe expansion so that the pipe to fitting connection cannot be made by elastic pressing.
  • Additional alloying with palladium and ruthenium in the claimed limits increases the corrosion resistance of the alloy in the marine environment when the alloy is used in sea vessel piping.
  • ingots with the composition shown in Table 1 have been melted in a vacuum arc furnace and pipes with the outside diameter of 1" and wall thickness of 0.051" were made from these ingots.
  • the alloy with the claimed composition possesses high strength and ductility values in combination with high expansion and corrosion resistance and complies with the requirements for pipes used in hydraulic systems of aerospace applications and sea vessels.
  • Table 1 Example Al V Mo Zr Fe N C O Ti Ru Pd 1 2.5 2.5 2.0 0.5 0.05 0.009 0.01 0.06 base - - 2 2.5 4.0 3.5 0.4 0.07 0.008 0.05 0.09 base 0.03 - 3 3.4 3.6 2.8 1.1 0.12 0.006 0.06 0.1 base - - 4 3.1 3.0 2.7 1.1 0.19 0.006 0.07 0.1 base - 0.03 5 4.0 4.0 3.5 1.5 0.08 0.01 0.1 0.15 base - -
  • the outside diameter expansion was determined as the ratio of the outside diameter of the specimen after flaring to the initial outside diameter.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
EP02739008.7A 2001-05-07 2002-05-07 Titanium-base alloy Expired - Lifetime EP1392876B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2001112580 2001-05-07
RU2001112580/02A RU2203974C2 (ru) 2001-05-07 2001-05-07 Сплав на основе титана
PCT/RU2002/000227 WO2002090607A1 (en) 2001-05-07 2002-05-07 Titanium-base alloy

Publications (2)

Publication Number Publication Date
EP1392876A1 EP1392876A1 (en) 2004-03-03
EP1392876B1 true EP1392876B1 (en) 2014-10-08

Family

ID=20249439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02739008.7A Expired - Lifetime EP1392876B1 (en) 2001-05-07 2002-05-07 Titanium-base alloy

Country Status (3)

Country Link
EP (1) EP1392876B1 (ru)
RU (1) RU2203974C2 (ru)
WO (1) WO2002090607A1 (ru)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040221929A1 (en) 2003-05-09 2004-11-11 Hebda John J. Processing of titanium-aluminum-vanadium alloys and products made thereby
US7837812B2 (en) 2004-05-21 2010-11-23 Ati Properties, Inc. Metastable beta-titanium alloys and methods of processing the same by direct aging
US10053758B2 (en) 2010-01-22 2018-08-21 Ati Properties Llc Production of high strength titanium
US9255316B2 (en) 2010-07-19 2016-02-09 Ati Properties, Inc. Processing of α+β titanium alloys
US8499605B2 (en) 2010-07-28 2013-08-06 Ati Properties, Inc. Hot stretch straightening of high strength α/β processed titanium
US8613818B2 (en) 2010-09-15 2013-12-24 Ati Properties, Inc. Processing routes for titanium and titanium alloys
US9206497B2 (en) 2010-09-15 2015-12-08 Ati Properties, Inc. Methods for processing titanium alloys
US10513755B2 (en) 2010-09-23 2019-12-24 Ati Properties Llc High strength alpha/beta titanium alloy fasteners and fastener stock
US8652400B2 (en) 2011-06-01 2014-02-18 Ati Properties, Inc. Thermo-mechanical processing of nickel-base alloys
RU2502819C1 (ru) * 2012-04-19 2013-12-27 Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") Сплав на основе титана
US9050647B2 (en) 2013-03-15 2015-06-09 Ati Properties, Inc. Split-pass open-die forging for hard-to-forge, strain-path sensitive titanium-base and nickel-base alloys
US9869003B2 (en) 2013-02-26 2018-01-16 Ati Properties Llc Methods for processing alloys
US9192981B2 (en) 2013-03-11 2015-11-24 Ati Properties, Inc. Thermomechanical processing of high strength non-magnetic corrosion resistant material
US9777361B2 (en) 2013-03-15 2017-10-03 Ati Properties Llc Thermomechanical processing of alpha-beta titanium alloys
US11111552B2 (en) 2013-11-12 2021-09-07 Ati Properties Llc Methods for processing metal alloys
US10023942B2 (en) 2014-04-28 2018-07-17 Arconic Inc. Titanium alloy, parts made thereof and method of use
RU2583566C1 (ru) * 2014-12-24 2016-05-10 Открытое Акционерное Общество "Корпорация Всмпо-Ависма" СПОСОБ ИЗГОТОВЛЕНИЯ ХОЛОДНОДЕФОРМИРОВАННЫХ БЕСШОВНЫХ ТРУБ ИЗ ТИТАНОВОГО СПЛАВА Ti-3Al-2,5V
US10094003B2 (en) 2015-01-12 2018-10-09 Ati Properties Llc Titanium alloy
RU2582171C1 (ru) * 2015-04-27 2016-04-20 Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") Сплав на основе титана
US10502252B2 (en) 2015-11-23 2019-12-10 Ati Properties Llc Processing of alpha-beta titanium alloys
RU2614229C1 (ru) * 2016-03-01 2017-03-23 Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") Сплав на основе титана
CN108893632B (zh) * 2018-08-03 2020-11-17 燕山大学 一种强韧耐蚀钛合金及其制备方法
CN110592425B (zh) * 2019-09-02 2022-03-11 中国船舶重工集团公司第七二五研究所 一种高冲击韧性钛合金及利用钛合金制备无缝管材的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025418A (ru) * 1973-03-02 1975-03-18
JP2797913B2 (ja) * 1993-08-11 1998-09-17 住友金属工業株式会社 冷間加工性および溶接性に優れた高耐食性チタン合金
DE19533743A1 (de) * 1995-09-12 1997-03-13 Vladislav Prof Tetjuchine Titanlegierung
US6228189B1 (en) * 1998-05-26 2001-05-08 Kabushiki Kaisha Kobe Seiko Sho α+β type titanium alloy, a titanium alloy strip, coil-rolling process of titanium alloy, and process for producing a cold-rolled titanium alloy strip
WO2001011095A1 (fr) * 1999-08-09 2001-02-15 Otkrytoe Aktsionernoe Obschestvo Verkhnesaldinskoe Metallurgicheskoe Proizvodstvennoe Obiedinenie (Oao Vsmpo) Alliage a base de titane

Also Published As

Publication number Publication date
EP1392876A1 (en) 2004-03-03
RU2203974C2 (ru) 2003-05-10
WO2002090607A8 (en) 2003-08-07
WO2002090607A1 (en) 2002-11-14

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