US20080069720A1 - Titanium-Aluminum Alloy - Google Patents
Titanium-Aluminum Alloy Download PDFInfo
- Publication number
- US20080069720A1 US20080069720A1 US11/579,642 US57964205A US2008069720A1 US 20080069720 A1 US20080069720 A1 US 20080069720A1 US 57964205 A US57964205 A US 57964205A US 2008069720 A1 US2008069720 A1 US 2008069720A1
- Authority
- US
- United States
- Prior art keywords
- titanium
- aluminum
- alloy
- content
- aluminum alloy
- 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
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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 present invention relates to a titanium-aluminum alloy with an alloy composition of titanium, aluminum and niobium.
- the invention further relates to a lightweight component made of a titanium-aluminum alloy and the use of a titanium-aluminum alloy for the production of a homogenous, fine-grained precursor material via a centrifugal casting method.
- Alloy compositions of titanium, aluminum and niobium are known. Such alloys are used in particular for the production of high-temperature-resistant lightweight components which, on the one hand, have a very low weight and which, on the other hand, must have a high degree of strength.
- DE 197 35 841 A1 describes an alloy based on titanium aluminides with an alloy composition of titanium, aluminum and niobium. The portion of niobium can vary in the known alloy, namely between 5 and 10 atom-%. In this connection the disclosed alloys always have a portion of 45 atom-% of aluminum. This corresponds to an aluminum portion between 28 and 30% in weight.
- DE 200 19 886 U1 also describes an alloy based on the production of titanium aluminides using melting and powder metallurgic techniques with an alloy composition of titanium, aluminum and niobium, wherein the aluminum content of the alloy is between 45.5 and 49 atom-%.
- the niobium content in this known alloy can be between 4 and 10 atom-%.
- This alloy also has an aluminum portion between 28 and 30% in weight.
- a niobium-modified titanium-aluminum alloy is known from DE 40 37 959 A1 which alloy substantially consists of titanium, aluminum and niobium, wherein the alloys have 37 to 48 atom-% of titanium, 46 to 49 atom-% of aluminum and 6 to 14 atom-% of niobium.
- the disadvantage of these known alloys of titanium and aluminum is their low temperature resistance with regard to creeping, fatigue and oxidation resistance.
- the known alloys are particularly difficult to process, in particular processing procedures such as casting or forging.
- a titanium-aluminum alloy according to the invention with an alloy composition of titanium, aluminum and niobium has an aluminum content between 35 and 60% in weight.
- the advantage of the alloy according to the invention is that the higher portions of aluminum in comparison to the previously known alloy compositions of titanium, aluminum and niobium achieve an unexpectedly high degree of strength and/or temperature resistance with regard to creeping, fatigue and a corresponding oxidation resistance.
- the aluminum content of the alloy is between 43 and 45% in weight.
- the niobium content of the alloy is between 2 and 16% in weight, preferably between 6 and 12% in weight.
- the alloy contains at least one halogen, in particular portions of chlorine and/or fluorine.
- the addition of chlorine and/or fluorine advantageously leads to a higher oxidation resistance of the alloy.
- the chlorine content and/or fluorine content is between 1 and 100 ppm, preferably between 2 and 10 ppm.
- the titanium-aluminum alloy according to the invention contains these portions of gold and/or silver.
- the addition of gold and/or silver also leads to a higher oxidation resistance of the alloy.
- the gold content and/or silver content is between 0.01 and 2.0% in weight, preferably between 0.01 and 1.0% in weight.
- the described titanium-aluminum alloys according to the invention an increased strength to 400 to 600 MPa/R.T. at 800° C. can be achieved.
- the oxidation resistance for 800° C. is 10,000 hours.
- the alloys according to the invention can be processed very well, i.e. crack-free extruding and forging, segregation-free melting and casting are possible.
- Lightweight components made from a titanium-aluminum alloy according to the previously described compositions also have a high temperature resistance, in particular regarding fatigue and oxidation resistance, as well as a high degree of strength.
- a titanium-aluminum alloy according to the invention according to the previously described exemplary compositions can be used to produce a homogeneous, fine-grained, precursor material via a centrifugal casting procedure. This is made possible by the very good processability of the alloy compositions according to the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
- The present invention relates to a titanium-aluminum alloy with an alloy composition of titanium, aluminum and niobium. The invention further relates to a lightweight component made of a titanium-aluminum alloy and the use of a titanium-aluminum alloy for the production of a homogenous, fine-grained precursor material via a centrifugal casting method.
- Alloy compositions of titanium, aluminum and niobium are known. Such alloys are used in particular for the production of high-temperature-resistant lightweight components which, on the one hand, have a very low weight and which, on the other hand, must have a high degree of strength. DE 197 35 841 A1 describes an alloy based on titanium aluminides with an alloy composition of titanium, aluminum and niobium. The portion of niobium can vary in the known alloy, namely between 5 and 10 atom-%. In this connection the disclosed alloys always have a portion of 45 atom-% of aluminum. This corresponds to an aluminum portion between 28 and 30% in weight. DE 200 19 886 U1 also describes an alloy based on the production of titanium aluminides using melting and powder metallurgic techniques with an alloy composition of titanium, aluminum and niobium, wherein the aluminum content of the alloy is between 45.5 and 49 atom-%. The niobium content in this known alloy can be between 4 and 10 atom-%. This alloy also has an aluminum portion between 28 and 30% in weight. A niobium-modified titanium-aluminum alloy is known from DE 40 37 959 A1 which alloy substantially consists of titanium, aluminum and niobium, wherein the alloys have 37 to 48 atom-% of titanium, 46 to 49 atom-% of aluminum and 6 to 14 atom-% of niobium. This corresponds to a composition of the alloy of 54 to 36.5% in weight of titanium, 30% in weight of aluminum and 6.5 to 16% in weight of niobium. Finally an alloy composition of titanium, aluminum and niobium is known from U.S. Pat. No. 4,294,615 which alloy composition consists of 58.8% in weight of titanium, 29.8% in weight of aluminum and 11.4% in weight of niobium.
- However, the disadvantage of these known alloys of titanium and aluminum is their low temperature resistance with regard to creeping, fatigue and oxidation resistance. In addition, due to their brittleness, the known alloys are particularly difficult to process, in particular processing procedures such as casting or forging.
- It is thus an object of this invention to provide a titanium-aluminum alloy with an alloy composition of titanium, aluminum and niobium which does not have these disadvantages, i.e., an alloy which has a high temperature resistance regarding creeping, fatigue, i.e., strength and oxidation resistance.
- Furthermore it is an object of this invention to provide lightweight components which have the mentioned high temperature resistance.
- These objects are solved by a titanium-aluminum alloy according to the features of claim 1 and a lightweight component according to the features of claim 11.
- Advantageous embodiments of the titanium-aluminum alloy according to the invention are described in the dependent claims.
- A titanium-aluminum alloy according to the invention with an alloy composition of titanium, aluminum and niobium has an aluminum content between 35 and 60% in weight. The advantage of the alloy according to the invention is that the higher portions of aluminum in comparison to the previously known alloy compositions of titanium, aluminum and niobium achieve an unexpectedly high degree of strength and/or temperature resistance with regard to creeping, fatigue and a corresponding oxidation resistance. In an advantageous embodiment the aluminum content of the alloy is between 43 and 45% in weight. Advantageously the niobium content of the alloy is between 2 and 16% in weight, preferably between 6 and 12% in weight.
- In a further advantageous embodiment of the titanium-aluminum alloy according to the invention the alloy contains at least one halogen, in particular portions of chlorine and/or fluorine. The addition of chlorine and/or fluorine advantageously leads to a higher oxidation resistance of the alloy. In this connection the chlorine content and/or fluorine content is between 1 and 100 ppm, preferably between 2 and 10 ppm.
- In a further advantageous embodiment the titanium-aluminum alloy according to the invention contains these portions of gold and/or silver. The addition of gold and/or silver also leads to a higher oxidation resistance of the alloy. In this connection the gold content and/or silver content is between 0.01 and 2.0% in weight, preferably between 0.01 and 1.0% in weight.
- With the described titanium-aluminum alloys according to the invention an increased strength to 400 to 600 MPa/R.T. at 800° C. can be achieved. The oxidation resistance for 800° C. is 10,000 hours. In addition the alloys according to the invention can be processed very well, i.e. crack-free extruding and forging, segregation-free melting and casting are possible.
- Lightweight components made from a titanium-aluminum alloy according to the previously described compositions also have a high temperature resistance, in particular regarding fatigue and oxidation resistance, as well as a high degree of strength.
- A titanium-aluminum alloy according to the invention according to the previously described exemplary compositions can be used to produce a homogeneous, fine-grained, precursor material via a centrifugal casting procedure. This is made possible by the very good processability of the alloy compositions according to the invention.
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022578.8 | 2004-05-07 | ||
DE102004022578A DE102004022578A1 (en) | 2004-05-07 | 2004-05-07 | Titanium-aluminum alloy |
PCT/DE2005/000809 WO2005108632A1 (en) | 2004-05-07 | 2005-05-02 | Titanium/aluminium alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080069720A1 true US20080069720A1 (en) | 2008-03-20 |
Family
ID=34969012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/579,642 Abandoned US20080069720A1 (en) | 2004-05-07 | 2005-05-02 | Titanium-Aluminum Alloy |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080069720A1 (en) |
EP (1) | EP1747298B1 (en) |
AT (1) | ATE373112T1 (en) |
DE (2) | DE102004022578A1 (en) |
PL (1) | PL1747298T3 (en) |
WO (1) | WO2005108632A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8882442B2 (en) | 2008-10-18 | 2014-11-11 | Mtu Aero Engines Gmbh | Component for a gas turbine and a method for the production of the component |
JP2016183403A (en) * | 2014-11-04 | 2016-10-20 | 株式会社神戸製鋼所 | METHOD FOR DEOXIDIZING Al-Nb-Ti-BASED ALLOY |
US9957836B2 (en) | 2012-07-19 | 2018-05-01 | Rti International Metals, Inc. | Titanium alloy having good oxidation resistance and high strength at elevated temperatures |
US11193185B2 (en) | 2016-10-21 | 2021-12-07 | General Electric Company | Producing titanium alloy materials through reduction of titanium tetrachloride |
US11319614B2 (en) | 2014-11-04 | 2022-05-03 | Kobe Steel, Ltd. | Method for deoxidizing Al—Nb—Ti alloy |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006024886A1 (en) * | 2006-05-24 | 2007-11-29 | Dechema Gesellschaft Für Chemische Technik Und Biotechnologie E.V. | Increasing the oxidation resistance of TiAl alloys by treatment with fluorine |
AU2017345609B2 (en) * | 2016-10-21 | 2021-12-09 | General Electric Company | Producing titanium alloy materials through reduction of titanium tetrachloride |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4294615A (en) * | 1979-07-25 | 1981-10-13 | United Technologies Corporation | Titanium alloys of the TiAl type |
US5451366A (en) * | 1992-07-17 | 1995-09-19 | Sumitomo Light Metal Industries, Ltd. | Product of a halogen containing Ti-Al system intermetallic compound having a superior oxidation and wear resistance |
US5980654A (en) * | 1997-03-14 | 1999-11-09 | Forschungszentrum Julich Gmbh | Oxidation-resistant Ti-Al containing alloy |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3789944B2 (en) * | 1991-03-19 | 2006-06-28 | 大陽工業株式会社 | Production method of titanium / aluminum alloy |
-
2004
- 2004-05-07 DE DE102004022578A patent/DE102004022578A1/en not_active Withdrawn
-
2005
- 2005-05-02 AT AT05747547T patent/ATE373112T1/en not_active IP Right Cessation
- 2005-05-02 PL PL05747547T patent/PL1747298T3/en unknown
- 2005-05-02 EP EP05747547A patent/EP1747298B1/en not_active Not-in-force
- 2005-05-02 DE DE502005001499T patent/DE502005001499D1/en active Active
- 2005-05-02 WO PCT/DE2005/000809 patent/WO2005108632A1/en active IP Right Grant
- 2005-05-02 US US11/579,642 patent/US20080069720A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4294615A (en) * | 1979-07-25 | 1981-10-13 | United Technologies Corporation | Titanium alloys of the TiAl type |
US5451366A (en) * | 1992-07-17 | 1995-09-19 | Sumitomo Light Metal Industries, Ltd. | Product of a halogen containing Ti-Al system intermetallic compound having a superior oxidation and wear resistance |
US5980654A (en) * | 1997-03-14 | 1999-11-09 | Forschungszentrum Julich Gmbh | Oxidation-resistant Ti-Al containing alloy |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8882442B2 (en) | 2008-10-18 | 2014-11-11 | Mtu Aero Engines Gmbh | Component for a gas turbine and a method for the production of the component |
US9957836B2 (en) | 2012-07-19 | 2018-05-01 | Rti International Metals, Inc. | Titanium alloy having good oxidation resistance and high strength at elevated temperatures |
JP2016183403A (en) * | 2014-11-04 | 2016-10-20 | 株式会社神戸製鋼所 | METHOD FOR DEOXIDIZING Al-Nb-Ti-BASED ALLOY |
EP3216882A4 (en) * | 2014-11-04 | 2018-04-11 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | METHOD FOR DEOXIDIZING Al-Nb-Ti ALLOY |
AU2015344310B2 (en) * | 2014-11-04 | 2018-12-20 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Method for deoxidizing Al-Nb-Ti alloy |
US11319614B2 (en) | 2014-11-04 | 2022-05-03 | Kobe Steel, Ltd. | Method for deoxidizing Al—Nb—Ti alloy |
US11193185B2 (en) | 2016-10-21 | 2021-12-07 | General Electric Company | Producing titanium alloy materials through reduction of titanium tetrachloride |
Also Published As
Publication number | Publication date |
---|---|
EP1747298A1 (en) | 2007-01-31 |
WO2005108632A1 (en) | 2005-11-17 |
EP1747298B1 (en) | 2007-09-12 |
DE102004022578A1 (en) | 2005-12-01 |
ATE373112T1 (en) | 2007-09-15 |
DE502005001499D1 (en) | 2007-10-25 |
PL1747298T3 (en) | 2008-02-29 |
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Owner name: AIRBUS DEUTSCHLAND GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EDER, JOHANNES;HECHTENBERG, KURT-VOLKER;HALM, JUERGEN;REEL/FRAME:018640/0830;SIGNING DATES FROM 20061109 TO 20061124 Owner name: EADS DEUTSCHLAND GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EDER, JOHANNES;HECHTENBERG, KURT-VOLKER;HALM, JUERGEN;REEL/FRAME:018640/0830;SIGNING DATES FROM 20061109 TO 20061124 |
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