US20120118433A1 - Method of modifying thermal and electrical properties of multi-component titanium alloys - Google Patents

Method of modifying thermal and electrical properties of multi-component titanium alloys Download PDF

Info

Publication number
US20120118433A1
US20120118433A1 US12/923,056 US92305610A US2012118433A1 US 20120118433 A1 US20120118433 A1 US 20120118433A1 US 92305610 A US92305610 A US 92305610A US 2012118433 A1 US2012118433 A1 US 2012118433A1
Authority
US
United States
Prior art keywords
titanium alloy
approximately
boron
tib
forging
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.)
Abandoned
Application number
US12/923,056
Other languages
English (en)
Inventor
Seshacharyulu Tamirisakandala
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.)
FMW Composite Systems Inc
Original Assignee
FMW Composite Systems Inc
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
Assigned to FMW COMPOSITE SYSTEMS, INC. reassignment FMW COMPOSITE SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAMIRISAKANDALA, SESHACHARYULU
Application filed by FMW Composite Systems Inc filed Critical FMW Composite Systems Inc
Priority to US12/923,056 priority Critical patent/US20120118433A1/en
Priority to EP11172128A priority patent/EP2453029A1/fr
Priority to CN2011102296938A priority patent/CN102465217A/zh
Priority to KR1020110084208A priority patent/KR20120051572A/ko
Priority to JP2011189256A priority patent/JP2012102394A/ja
Publication of US20120118433A1 publication Critical patent/US20120118433A1/en
Assigned to PURIS, LLC reassignment PURIS, LLC SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FMW COMPOSITE SYSTEMS, INC.
Assigned to PURIS, LLC reassignment PURIS, LLC CORRECTIVE ASSIGNMENT TO CORRECT THE NATURE OF CONVEYANCE PREVIOUSLY RECORDED ON REEL 041024 FRAME 0988. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: FMW COMPOSITE SYSTEMS, INC.
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/06—Casting non-ferrous metals with a high melting point, e.g. metallic carbides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1039—Sintering only by reaction
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals
    • C22C1/0458—Alloys based on titanium, zirconium or hafnium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0031—Matrix based on refractory metals, W, Mo, Nb, Hf, Ta, Zr, Ti, V or alloys thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
    • C22C32/0073—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides

Definitions

  • the present invention relates to a method of improving physical properties of titanium alloys and, more specifically, a method of increasing thermal conductivity and reducing electrical resistivity of articles made of titanium-based compositions.
  • Titanium alloys offer attractive physical and mechanical property combinations that provide significant weight savings in various industries such as aerospace and space. Thermal conductivity of titanium alloys, however, is low compared to other structural metals such as steel and aluminum. Low thermal conductivity of titanium alloys affects heating rates and obtainable cooling rates after processing and heat treatments. Another drawback of titanium alloys is their high electrical resistivity compared to steel and aluminum. High electrical resistivity limits the use of titanium alloys as electrical conductors. There is a need, therefore, for a new and improved method of increasing thermal conductivity and reducing electrical resistivity of conventional titanium alloys such as Ti-6Al-4V without debits in mechanical properties, specifically tensile elongation and fatigue. The method of the present invention meets this need.
  • titanium boride (TiB) precipitates are incorporated into a titanium alloy and the alloy is then subjected to controlled deformation to orient the TiB precipitates in the direction of interest to achieve improvements in thermal and electrical properties.
  • the controlled deformation of the alloy to orient the TiB precipitates is accomplished by hot metalworking.
  • the boron is introduced into the titanium alloy composition to produce TiB precipitates by any suitable method, such as casting, cast-and-wrought processing, powder metallurgy techniques such as gas atomization and blended elemental approach. Hot metalworking operations such as forging, rolling and extrusion can be used to accomplish alignment of the TiB precipitates along the direction of metal flow.
  • the method of the present invention may be used to increase thermal conductivity and reduce electrical resistivity of multi-component titanium alloys such as Ti-6Al-4V (Ti-64) and Ti-6Al-2Sn-4Zr-2Mo(Ti-6242).
  • multi-component titanium alloys such as Ti-6Al-4V (Ti-64) and Ti-6Al-2Sn-4Zr-2Mo(Ti-6242).
  • FIG. 1 is a pre-alloyed powder metallurgy process flowchart for fabrication of TiB incorporated titanium alloy articles
  • FIG. 2 a is a microstructure of Ti-6Al-4V-1B showing a cross-section of as-atomized pre-alloyed powder particle
  • FIG. 2 b is a microstructure of Ti-6Al-4V-1B after powder consolidation via hot isostatic pressing;
  • FIG. 3 shows microstructures of Ti-6Al-4V-1B forging article at different locations
  • FIG. 4 a is a microstructure of an extrusion article made out of pre-alloyed powder of Ti-6Al-4V-1B revealing TiB precipitates (dark phase) aligned along the extrusion axis.
  • FIG. 4 b is a transverse micrograph of FIG. 4 a showing hexagonal cross-sections of TiB precipitates
  • FIG. 5 is a graph comparing the thermal conductivity of Ti-6Al-4V-1B (labeled as nano Ti-64) forging and extrusion articles with that of a Ti-6Al-4V article;
  • FIG. 6 is a graph comparing the thermal conductivity of Ti-6Al-2Sn-4Zr-2Mo-1B forging article with that of the baseline Ti-6Al-2Sn-4Zr-2Mo article;
  • FIG. 7 is a graph comparing the electrical resistivity of Ti-6Al-4V-1B (labeled as nano Ti-64) forging article with that of a Ti-6Al-4V article;
  • FIG. 8 is a graph comparing the electrical resistivity of Ti-6Al-2Sn-4Zr-2Mo-1B forging article with that of the baseline Ti-6Al-2Sn-4Zr-2Mo article.
  • Ti-6Al-4V Ti-64
  • Ti-6Al-2Sn-4Zr-2Mo Ti-6242
  • boron into the titanium alloy composition to produce TiB precipitates can be accomplished by several different methods, such as casting, cast-and-wrought processing, powder metallurgy techniques such as gas atomization and blended elemental approach.
  • the boron may be added to the titanium alloy in the liquid state, wherein the boron is completely dissolved in the liquid titanium alloy.
  • the boron may be added to the titanium alloy through intermixing of solid powders, as by powder metallurgy. Regardless of the process used to add the boron to the titanium alloy, the boron may be added as elemental boron, TiB2 or as any appropriate master alloy containing boron.
  • the boron may be added in amounts in the range from 0.01% to 18.4%, by weight. More preferably, the boron is added to the titanium alloy in amounts ranging from 0.01% to 2%, by weight, depending on titanium alloy composition.
  • Hot metalworking operations such as forging, rolling, and extrusion can be used to accomplish alignment of TiB precipitates along the direction of metal flow.
  • the present method can be practiced by the gas atomization powder metallurgy process flowchart shown in FIG. 1 .
  • the boron is added to the molten titanium alloy and the liquid melt is inert gas atomized to obtain titanium alloy powder.
  • Each powder particle contains needle-shaped TiB precipitates distributed uniformly and in random orientations.
  • An example microstructure of Ti-6Al-4V-1B powder particle cross-section which contains 6 vol. % of TiB (dark phase) is shown in FIG. 2 a .
  • Titanium alloy powder is consolidated using a conventional technique such as hot isostatic pressing (HIP) to obtain a fully dense powder compact. In as-compacted condition, the TiB precipitates are still in random orientations distributed uniformly in the titanium alloy matrix.
  • An example microstructure of Ti-6Al-4V-1B powder after HIP is shown in FIG. 2 b.
  • Hot working parameters commonly practiced for producing titanium alloy articles were found to produce the desired alignment of TiB precipitates along the direction of metal flow.
  • the hot working parameters are as follows:
  • FIG. 3 Micrographs at different locations of a Ti-6Al-4V-1B article made via forging of a powder compact of 16′′ height ⁇ 3.5′′ diameter into a disk of 3′′ height ⁇ 8′′ diameter in the temperature range 1750-2200° F. and a ram speed of 40 inch/min are shown in FIG. 3 . Alignment of TiB needle-shaped precipitates (dark phase) along the radial orientation after forging is evident in FIG. 3 .
  • FIG. 4 Another example microstructure of a Ti-6Al-4V-1B article that was produced by extrusion processing of a 3′′ diameter powder compact into a bar of 0.75′′ diameter at 2000° F. and a ram speed of 100 inch/min is shown in FIG. 4 , which reveals alignment of TiB precipitates (dark phase) along the extrusion axis.
  • Thermal conductivity of Ti-64-1B (labeled as nano Ti-64) forging and extrusion articles is compared with that of Ti-64 article in FIG. 5 .
  • Higher thermal conductivity of nano Ti-64 forging in the radial orientation and nano Ti-64 extrusion in the axial orientation is evident compared to the baseline Ti-64 in the temperature range 70-1250° F.
  • Thermal conductivity data of Ti-6242-1B forging article is compared with that of the baseline Ti-6242 article in FIG. 6 . Increased thermal conductivity compared to the baseline is evident in this material system also. Increase in thermal conductivity by up to 35% was recorded in articles with the TiB precipitates aligned along the test direction.
  • Ti-64-1B (labeled as nano Ti-64) forging article is compared with that of Ti-64 article in FIG. 7 .
  • Reduced electrical resistivity of nano Ti-64 forging in the radial orientation compared to the baseline Ti-64 in the temperature range 70-1500° F. is evident.
  • Electrical resistivity data of Ti-6242-1B forging article is compared with that of the baseline Ti-6242 article in FIG. 8 .
  • Reduced electrical resistivity compared to the baseline is evident in this material system also. Reduction in thermal conductivity by up to 20% was recorded in articles with the TiB precipitates aligned along the test direction.
  • TiB incorporated titanium alloys offer several benefits in mechanical properties without debits in ductility and fatigue.
  • room temperature tensile properties of boron-modified titanium alloy articles (referred to as nano version) are compared with those of baseline titanium alloys in Table 2.
  • the tensile yield strength and ultimate strength were higher by 25%, modulus of elasticity is higher by 20%, while maintaining tensile elongations equivalent to their baseline titanium alloys.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
US12/923,056 2010-11-12 2010-11-12 Method of modifying thermal and electrical properties of multi-component titanium alloys Abandoned US20120118433A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/923,056 US20120118433A1 (en) 2010-11-12 2010-11-12 Method of modifying thermal and electrical properties of multi-component titanium alloys
EP11172128A EP2453029A1 (fr) 2010-11-12 2011-06-30 Procédé pour modifier les propriétés thermiques et électriques dýalliages de titane à plusieurs composants
CN2011102296938A CN102465217A (zh) 2010-11-12 2011-08-11 多组分钛合金热性能和电性能的改性方法
KR1020110084208A KR20120051572A (ko) 2010-11-12 2011-08-23 다수 성분의 티타늄 합금들의 열적 특성 및 전기적 특성의 개질 방법
JP2011189256A JP2012102394A (ja) 2010-11-12 2011-08-31 多成分チタン合金の熱特性および電気特性を変更する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/923,056 US20120118433A1 (en) 2010-11-12 2010-11-12 Method of modifying thermal and electrical properties of multi-component titanium alloys

Publications (1)

Publication Number Publication Date
US20120118433A1 true US20120118433A1 (en) 2012-05-17

Family

ID=44645482

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/923,056 Abandoned US20120118433A1 (en) 2010-11-12 2010-11-12 Method of modifying thermal and electrical properties of multi-component titanium alloys

Country Status (5)

Country Link
US (1) US20120118433A1 (fr)
EP (1) EP2453029A1 (fr)
JP (1) JP2012102394A (fr)
KR (1) KR20120051572A (fr)
CN (1) CN102465217A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109722565A (zh) * 2019-01-10 2019-05-07 青海聚能钛金属材料技术研究有限公司 耐高温钛合金及其制备方法和应用
CN109722564A (zh) * 2019-01-10 2019-05-07 青海聚能钛金属材料技术研究有限公司 Ti-6242钛合金及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005060631A2 (fr) * 2003-12-11 2005-07-07 Ohio University Procede d'affinage microstructurel d'alliage de titane et formation superplastique a vitesse de deformation elevee et haute temperature d'alliages de titane
US20060016521A1 (en) * 2004-07-22 2006-01-26 Hanusiak William M Method for manufacturing titanium alloy wire with enhanced properties
US20070286761A1 (en) * 2006-06-07 2007-12-13 Miracle Daniel B Method of producing high strength, high stiffness and high ductility titanium alloys

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484931B1 (fr) * 1990-11-09 1998-01-14 Kabushiki Kaisha Toyota Chuo Kenkyusho Alliage de titane préparé par frittage de poudres et procédé pour leur fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005060631A2 (fr) * 2003-12-11 2005-07-07 Ohio University Procede d'affinage microstructurel d'alliage de titane et formation superplastique a vitesse de deformation elevee et haute temperature d'alliages de titane
US20060016521A1 (en) * 2004-07-22 2006-01-26 Hanusiak William M Method for manufacturing titanium alloy wire with enhanced properties
US20070286761A1 (en) * 2006-06-07 2007-12-13 Miracle Daniel B Method of producing high strength, high stiffness and high ductility titanium alloys

Also Published As

Publication number Publication date
JP2012102394A (ja) 2012-05-31
KR20120051572A (ko) 2012-05-22
CN102465217A (zh) 2012-05-23
EP2453029A1 (fr) 2012-05-16

Similar Documents

Publication Publication Date Title
US7879286B2 (en) Method of producing high strength, high stiffness and high ductility titanium alloys
EP3717150B1 (fr) Alliages d'aluminium à composants multiples pour des applications telles que la fabrication additive
JP6261618B2 (ja) チタン素材および窒素固溶チタン粉末材料の製造方法
Kim et al. Microstructure and mechanical properties of hot isostatically pressed Ti–6Al–4V alloy
Kafkas et al. Metallurgical and mechanical properties of Ti–24Nb–4Zr–8Sn alloy fabricated by metal injection molding
Durlu et al. Effect of swaging on microstructure and tensile properties of W–Ni–Fe alloys
Çalışkan et al. Swaging of liquid phase sintered 90W–7Ni–3Fe tungsten heavy alloy
EP2546370A1 (fr) Procédé de production d'un alliage de titane bêta à rigidité et résistance élevée
Ponnusamy et al. Dynamic compressive behaviour of selective laser melted AlSi12 alloy: Effect of elevated temperature and heat treatment
CN104759830B (zh) 生产性能增强的金属材料的方法
CA3109213A1 (fr) Alliage de titane a haute resistance pour fabrication additive
ES2967967T3 (es) Productos de aleación de titanio y métodos para fabricar los mismos
Pang et al. Strength and ductility optimization of laser additive manufactured metastable β titanium alloy by tuning α phase by post heat treatment
JP2008502808A (ja) 熱処理を行った近β型チタン合金鋳造品
CN109072345A (zh) 具有铝和钼的α-β钛合金及由其制成的产品
EP4327964A1 (fr) Alliage de titane et procédés de fabrication
Xu et al. Bio-mimic Ti–Ta composite with hierarchical “Brick-and-Mortar” microstructure
Bian et al. Mechanisms of heat treatment and ductility improvement of high-oxygen Ti–6Al–4V alloy fabricated by metal injection molding
US20120118433A1 (en) Method of modifying thermal and electrical properties of multi-component titanium alloys
Zeumer et al. Deformation behaviour of intermetallic NiAl–Ta alloys with strengthening Laves phase for high-temperature applications IV. Effects of processing
Ramesh et al. Influence of Thermo Mechanical Properties Parameters on Titanium Metal Matrix Composite and Ti-6Al-4V for Aerospace Applications
CN115874083A (zh) 一种超硬钛合金及其制备方法
Grohowski et al. Evaluation of High Strength Titanium Alloys via Metal Injection Molding (MIM)
Emura et al. Effect of Heat Treatment on the Creep Properties of Ti-22Al-27Nb/TiB Composite

Legal Events

Date Code Title Description
AS Assignment

Owner name: FMW COMPOSITE SYSTEMS, INC., WEST VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAMIRISAKANDALA, SESHACHARYULU;REEL/FRAME:024958/0778

Effective date: 20100826

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: PURIS, LLC, WEST VIRGINIA

Free format text: SECURITY INTEREST;ASSIGNOR:FMW COMPOSITE SYSTEMS, INC.;REEL/FRAME:041024/0988

Effective date: 20170104

AS Assignment

Owner name: PURIS, LLC, WEST VIRGINIA

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE NATURE OF CONVEYANCE PREVIOUSLY RECORDED ON REEL 041024 FRAME 0988. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNOR:FMW COMPOSITE SYSTEMS, INC.;REEL/FRAME:041465/0019

Effective date: 20170104