EP1213365A1 - Alliage à base d'aluminures de titane - Google Patents

Alliage à base d'aluminures de titane Download PDF

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Publication number
EP1213365A1
EP1213365A1 EP01124481A EP01124481A EP1213365A1 EP 1213365 A1 EP1213365 A1 EP 1213365A1 EP 01124481 A EP01124481 A EP 01124481A EP 01124481 A EP01124481 A EP 01124481A EP 1213365 A1 EP1213365 A1 EP 1213365A1
Authority
EP
European Patent Office
Prior art keywords
alloy
atom
alloys
titanium
content
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.)
Withdrawn
Application number
EP01124481A
Other languages
German (de)
English (en)
Inventor
Jonathan Dr. Paul
Fritz Dr. Appel
Uwe Lorenz
Michael Dr. Oehring
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.)
GKSS Forshungszentrum Geesthacht GmbH
Original Assignee
GKSS Forshungszentrum Geesthacht GmbH
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 GKSS Forshungszentrum Geesthacht GmbH filed Critical GKSS Forshungszentrum Geesthacht GmbH
Publication of EP1213365A1 publication Critical patent/EP1213365A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • C22C14/00—Alloys based on titanium

Definitions

  • the invention relates to an alloy based on using melt or powder metallurgical Titanium aluminides produced using a technique Alloy composition of titanium, aluminum and niobium.
  • the mechanical properties of these alloys depend on the relative volume fractions of these two phases, which in turn are primarily determined by the aluminum content.
  • the tensile strength of the generic alloys could be significantly improved by a 5 to 10 atom% proportion of niobium, which has been pointed out in the generic DE-OS 197 35 841.
  • the generic alloys are characterized by very high tensile strength, which, based on the specific weight, surpass that of the superalloys.
  • the good tensile strength of these Nb-containing alloys is based on the high volume fractions of the ⁇ 2 (Ti 3 Al) phase present in them.
  • the ⁇ 2 (Ti 3 Al) phase dissolves easily at application temperatures above 700 ° C and transforms into the ⁇ (TiAl) phase.
  • This leads to large structural changes in the structure which are extremely disadvantageous for the mechanical properties at high temperatures. Under these conditions, a high creep deformation of the material occurs, which makes it unusable for many applications.
  • the associated structural changes in the structure of the material lead to its embrittlement, which has a very disadvantageous effect on a subsequent load on a component made from such a material at low temperatures.
  • the object is achieved according to the invention by a Alloy composition of the generic type, at which is the aluminum content of the alloy in the range between 45.5 and 49 atomic%.
  • Titanium aluminide alloys are provided can be a much better one at high temperatures Have strength.
  • Aluminum has an unexpectedly higher resistance to oxidation reached.
  • Another advantage is that achievable lower densities of the invention alloys according to the invention and the comparable low raw material costs.
  • Another advantage is that considering the foregoing the field of application of titanium aluminide alloys significantly expanded by means of the solution according to the invention.
  • the alloy also contains boron, preferably with a boron content in the alloy in the range of 0.1 to 0.5 atomic%.
  • boron advantageously results for the formation of stable excretions which lead to mechanical Hardening of the alloy according to the invention and Stabilize the structure of the alloy.
  • the Invention contains the alloy carbon, namely preferably with a carbon content in the range of 0.1 to 0.8 atomic%. Even the addition of carbon, if necessary in combination with the above Additive boron, leads to the formation of stable excretions, which are also used for mechanical hardening of the Alloy and contribute to the stabilization of the structure.
  • the figure contains the strength values for room temperature and 900 ° C.
  • the strength values of an alloy realized by the generic DE-OS 197 35 841 are contained in a composition Ti-45 A1-10Nb-0.2C-0.2B (also in atom%).
  • Alloys are made.
  • the invention Alloys can also be made by hot isostatic compression, Heat treatments, hot forging and hot extrusion or a combination of these methods be reshaped or further processed.

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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)
EP01124481A 2000-11-22 2001-10-12 Alliage à base d'aluminures de titane Withdrawn EP1213365A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10058155A DE10058155A1 (de) 2000-11-22 2000-11-22 Legierung auf der Basis von Titanaluminiden
DE10058155 2000-11-22

Publications (1)

Publication Number Publication Date
EP1213365A1 true EP1213365A1 (fr) 2002-06-12

Family

ID=7664382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01124481A Withdrawn EP1213365A1 (fr) 2000-11-22 2001-10-12 Alliage à base d'aluminures de titane

Country Status (5)

Country Link
EP (1) EP1213365A1 (fr)
JP (1) JP2002167635A (fr)
KR (1) KR20020040583A (fr)
CN (1) CN1360074A (fr)
DE (1) DE10058155A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056248A1 (fr) * 2004-11-23 2006-06-01 Gkss-Forschungszentrum Geesthacht Gmbh Alliage a base d'aluminides de titane

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465311C (zh) * 2007-07-12 2009-03-04 北京科技大学 一种制备高铌钛铝多孔材料的方法
CN102234063A (zh) * 2011-04-15 2011-11-09 王宏贵 一种承吊销
CN104328311B (zh) * 2014-10-30 2016-04-27 西北工业大学 具有过包晶凝固特征的抗热裂型中铌铸造TiAl合金
EP3249064A1 (fr) 2016-05-23 2017-11-29 MTU Aero Engines GmbH Fabrication additive de composants haute temperature en tial
CN107699738A (zh) * 2017-09-29 2018-02-16 成都露思特新材料科技有限公司 一种细晶TiAl合金及其制备方法、航空发动机、汽车

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01298127A (ja) * 1988-05-27 1989-12-01 Sumitomo Metal Ind Ltd 金属間化合物ＴｉＡｌ基軽量耐熱合金
DE4037959A1 (de) * 1989-12-04 1991-06-06 Gen Electric Titanaluminid-legierung mit hohem niobgehalt
EP0477560A1 (fr) * 1990-09-26 1992-04-01 General Electric Company Aluminiare de titane contenant du niobium et rendu apte à la coulée par inoculations avec du bore
EP0568951A2 (fr) * 1992-05-08 1993-11-10 ABBPATENT GmbH Matériau réfractaire
DE19735841A1 (de) * 1997-08-19 1999-02-25 Geesthacht Gkss Forschung Legierung auf der Basis von Titanaluminiden

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01298127A (ja) * 1988-05-27 1989-12-01 Sumitomo Metal Ind Ltd 金属間化合物ＴｉＡｌ基軽量耐熱合金
DE4037959A1 (de) * 1989-12-04 1991-06-06 Gen Electric Titanaluminid-legierung mit hohem niobgehalt
EP0477560A1 (fr) * 1990-09-26 1992-04-01 General Electric Company Aluminiare de titane contenant du niobium et rendu apte à la coulée par inoculations avec du bore
EP0568951A2 (fr) * 1992-05-08 1993-11-10 ABBPATENT GmbH Matériau réfractaire
DE19735841A1 (de) * 1997-08-19 1999-02-25 Geesthacht Gkss Forschung Legierung auf der Basis von Titanaluminiden

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 080 (C - 0689) 15 February 1990 (1990-02-15) *
SCHIMANSKY F P ET AL: "Spray forming of gamma titanium aluminides", INTERMETALLICS, ELSEVIER SCIENCE PUBLISHERS B.V, GB, vol. 7, no. 11, November 1999 (1999-11-01), pages 1275 - 1282, XP004183814, ISSN: 0966-9795 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056248A1 (fr) * 2004-11-23 2006-06-01 Gkss-Forschungszentrum Geesthacht Gmbh Alliage a base d'aluminides de titane

Also Published As

Publication number Publication date
CN1360074A (zh) 2002-07-24
JP2002167635A (ja) 2002-06-11
DE10058155A1 (de) 2002-05-23
KR20020040583A (ko) 2002-05-30

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