EP1449929A1 - Alliage metastable de beta-titane - Google Patents
Alliage metastable de beta-titane Download PDFInfo
- Publication number
- EP1449929A1 EP1449929A1 EP02783880A EP02783880A EP1449929A1 EP 1449929 A1 EP1449929 A1 EP 1449929A1 EP 02783880 A EP02783880 A EP 02783880A EP 02783880 A EP02783880 A EP 02783880A EP 1449929 A1 EP1449929 A1 EP 1449929A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- titanium alloy
- ductility
- balance
- iron
- 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.)
- Granted
Links
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
- This invention relates to the non-ferrous metallurgy, and more particularly to the development of new titanium-base alloys combining high strength and ductility properties using relatively low-cost alloying elements.
- the alloys of this invention can be applied in a wide range of products especially fasteners and different coil springs.
- One of the known titanium alloys is the alloy containing (mass %): 2-6 Al; 6-9 Mo; 1-3 V; 0.5-2 Cr; 0-1.5 Fe; Ti balance.
- Ref USSR Inventor's Certificate No. 180351, Class C22C 14/00, 1966.
- this alloy has insufficient ductility due to the high content of Al and the presence of Cr. Besides this alloy is rather expensive.
- the other known titanium alloy contains (mass %): 4-6.3 Al; 4.5-5.9 V; 4.5-5.9 Mo; 2.0-3.6 Cr; 0.2-0.5 Fe; Ti balance.
- Ref RF Patent No. 2169204, Class C22C 14/00, published 2001.
- the said alloy as-heat treated has high strength properties in heavy section forgings, but its ductility is insufficient and so the alloy cannot be used for production of such parts as coil springs.
- the most close to the claimed invention is the metastable ⁇ -titanium alloy containing (mass %): 4-5 Fe; 4-7 Mo; 1-2 Al; O 2 up to 0.25; Ti balance.
- Ref US Patent No. 5,294,267,2 Class C22C 14/00, published 1994. This alloy will be the prototype.
- This alloy has high machinability, demands relatively low costs and is widely used for production of coil cylindrical springs in automotive industry.
- the said alloy has low ductility properties, especially elongation, which reduces the application of this alloy and is of importance during manufacture of some types of coil springs and fastener components.
- the object of this invention is to provide a titanium alloy with combination of high ductility and strength properties in as-heat treated condition, which can be produced using low cost alloying elements.
- this alloy has higher content of aluminum than the prototype.
- the content of aluminum of less than 3.5% does not significantly influence on the alloy ductility.
- the contents of aluminum greater than 3.5% and iron greater than 3.8% increases the ⁇ -phase quantity, causes hardening and reduces ductility lower than desired.
- the lower content of iron ( ⁇ 4%) than in the prototype ensures greater phase stability during thermal cycles (deformation and heat treatment).
- the desired strength properties cannot be achieved with aluminum below 1.5%.
- the content of molybdenum below 4.5% and iron below 1.5% reduces ⁇ -phase quantity and does not allow to achieve high strength of the as-heat treated alloy.
- Molybdenum is added as ferromolybdenum with 55-75% of molybdenum and iron balance.
- Vanadium is added as ferrovanadium with 65-85 % of vanadium and iron balance or Ti-Al-V system scrap.
- ingots with the composition shown in Table 1 were melted in a vacuum arc furnace and 20 mm diameter bars were made from these ingots.
- the bars were heat treated under the following conditions: heating to temperature of 30 °C below beta transus temperature, water cooling, heating to 480 °C for 8 hours, air cooling. Then tensile specimens were tested according to ASTM E 8. Mechanical properties of the produced bars from the evaluated alloys are shown in Table 2.
- the claimed metastable ⁇ -titanium alloy as compared to the known alloys has the specified optimal combination of beta and alpha stabilizing alloying elements, which ensure high strength and ductility of the as-heat treated alloy. It is low cost and can be used for production of a wide range of critical parts, especially fastener components and different coil springs.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Springs (AREA)
- Heat Treatment Of Articles (AREA)
- Ceramic Products (AREA)
- Forging (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2001131383/02A RU2211873C2 (ru) | 2001-11-22 | 2001-11-22 | МЕТАСТАБИЛЬНЫЙ β-ТИТАНОВЫЙ СПЛАВ |
RU2001131383 | 2001-11-22 | ||
PCT/RU2002/000502 WO2003044234A1 (fr) | 2001-11-22 | 2002-11-18 | Alliage metastable de $g(b)-titane |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1449929A1 true EP1449929A1 (fr) | 2004-08-25 |
EP1449929A4 EP1449929A4 (fr) | 2005-02-02 |
EP1449929B1 EP1449929B1 (fr) | 2006-05-17 |
Family
ID=20254397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02783880A Expired - Lifetime EP1449929B1 (fr) | 2001-11-22 | 2002-11-18 | Alliage metastable de beta-titane |
Country Status (9)
Country | Link |
---|---|
US (2) | US20060039819A1 (fr) |
EP (1) | EP1449929B1 (fr) |
AT (1) | ATE326554T1 (fr) |
DE (1) | DE60211548T2 (fr) |
DK (1) | DK1449929T3 (fr) |
ES (1) | ES2261754T3 (fr) |
HK (1) | HK1066832A1 (fr) |
RU (1) | RU2211873C2 (fr) |
WO (1) | WO2003044234A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005052918A1 (de) * | 2005-11-03 | 2007-05-16 | Hempel Robert P | Kaltverformbare Ti-Legierung |
RU2425164C1 (ru) | 2010-01-20 | 2011-07-27 | Открытое Акционерное Общество "Корпорация Всмпо-Ависма" | Вторичный титановый сплав и способ его изготовления |
CN102586639A (zh) * | 2012-03-16 | 2012-07-18 | 广州有色金属研究院 | 一种高速压制成形制备钛合金的方法 |
GB201701251D0 (en) * | 2017-01-25 | 2017-03-08 | Univ Oxford Innovation Ltd | A titanium-based alloy |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3615378A (en) * | 1968-10-02 | 1971-10-26 | Reactive Metals Inc | Metastable beta titanium-base alloy |
GB1333729A (en) * | 1970-10-23 | 1973-10-17 | Lockheed Aircraft Corp | Titanium base alloy |
JPH05171321A (ja) * | 1991-12-24 | 1993-07-09 | Nkk Corp | 高密度粉末焼結用チタン合金 |
JPH05287406A (ja) * | 1992-04-15 | 1993-11-02 | Nkk Corp | 高密度粉末焼結チタン合金の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU180351A1 (ru) * | 1965-01-06 | 1966-03-21 | Сплав на основе титана | |
DE3425055C1 (de) * | 1984-07-07 | 1985-07-25 | Daimler-Benz Ag, 7000 Stuttgart | Getterstoff |
US5294267A (en) * | 1992-12-04 | 1994-03-15 | Titanium Metals Corporation | Metastable beta titanium-base alloy |
US5980655A (en) * | 1997-04-10 | 1999-11-09 | Oremet-Wah Chang | Titanium-aluminum-vanadium alloys and products made therefrom |
US5855697A (en) * | 1997-05-21 | 1999-01-05 | Imra America, Inc. | Magnesium alloy having superior elevated-temperature properties and die castability |
RU2169204C1 (ru) * | 2000-07-19 | 2001-06-20 | ОАО Верхнесалдинское металлургическое производственное объединение | Сплав на основе титана и способ термической обработки крупногабаритных полуфабрикатов из этого сплава |
RU2269584C1 (ru) * | 2004-07-30 | 2006-02-10 | Открытое Акционерное Общество "Корпорация Всмпо-Ависма" | Сплав на основе титана |
US20060045789A1 (en) * | 2004-09-02 | 2006-03-02 | Coastcast Corporation | High strength low cost titanium and method for making same |
-
2001
- 2001-11-22 RU RU2001131383/02A patent/RU2211873C2/ru active
-
2002
- 2002-11-18 ES ES02783880T patent/ES2261754T3/es not_active Expired - Lifetime
- 2002-11-18 WO PCT/RU2002/000502 patent/WO2003044234A1/fr active IP Right Grant
- 2002-11-18 EP EP02783880A patent/EP1449929B1/fr not_active Expired - Lifetime
- 2002-11-18 DK DK02783880T patent/DK1449929T3/da active
- 2002-11-18 US US10/496,493 patent/US20060039819A1/en not_active Abandoned
- 2002-11-18 AT AT02783880T patent/ATE326554T1/de not_active IP Right Cessation
- 2002-11-18 DE DE60211548T patent/DE60211548T2/de not_active Expired - Lifetime
-
2004
- 2004-12-06 HK HK04109637A patent/HK1066832A1/xx not_active IP Right Cessation
-
2008
- 2008-02-11 US US12/069,496 patent/US20080199350A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3615378A (en) * | 1968-10-02 | 1971-10-26 | Reactive Metals Inc | Metastable beta titanium-base alloy |
GB1333729A (en) * | 1970-10-23 | 1973-10-17 | Lockheed Aircraft Corp | Titanium base alloy |
JPH05171321A (ja) * | 1991-12-24 | 1993-07-09 | Nkk Corp | 高密度粉末焼結用チタン合金 |
JPH05287406A (ja) * | 1992-04-15 | 1993-11-02 | Nkk Corp | 高密度粉末焼結チタン合金の製造方法 |
Non-Patent Citations (4)
Title |
---|
DATABASE INSPEC [Online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 1982, CHAIT R ET AL: "An evaluation of direct aging to achieve optimum mechanical properties for the metastable beta Ti-8Mo-8V-2Fe-3Al alloy" XP002306060 Database accession no. 1991119 & TITANIUM AND TITANIUM ALLOYS. SCIENTIFIC AND TECHNOLOGICAL ASPECTS. PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON TITANIUM 18-21 MAY 1976 MOSCOW, USSR, 1982, pages 1717-1729 vol., Titanium and Titanium Alloys. Scientific and Technological Aspects. Proceedings of the Third International Conference on Titanium Plenum New York, NY, USA ISBN: 0-306-40191-6 * |
PATENT ABSTRACTS OF JAPAN vol. 0175, no. 89 (C-1124), 27 October 1993 (1993-10-27) & JP 5 171321 A (NKK CORP), 9 July 1993 (1993-07-09) * |
PATENT ABSTRACTS OF JAPAN vol. 0180, no. 82 (C-1164), 10 February 1994 (1994-02-10) & JP 5 287406 A (NKK CORP), 2 November 1993 (1993-11-02) * |
See also references of WO03044234A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE326554T1 (de) | 2006-06-15 |
EP1449929A4 (fr) | 2005-02-02 |
HK1066832A1 (en) | 2005-04-01 |
DK1449929T3 (da) | 2006-06-12 |
US20080199350A1 (en) | 2008-08-21 |
EP1449929B1 (fr) | 2006-05-17 |
RU2211873C2 (ru) | 2003-09-10 |
WO2003044234A1 (fr) | 2003-05-30 |
ES2261754T3 (es) | 2006-11-16 |
US20060039819A1 (en) | 2006-02-23 |
DE60211548T2 (de) | 2006-09-14 |
DE60211548D1 (de) | 2006-06-22 |
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