EP1070152A1 - PREALLIAGE DE TiAl - Google Patents

PREALLIAGE DE TiAl

Info

Publication number
EP1070152A1
EP1070152A1 EP99913284A EP99913284A EP1070152A1 EP 1070152 A1 EP1070152 A1 EP 1070152A1 EP 99913284 A EP99913284 A EP 99913284A EP 99913284 A EP99913284 A EP 99913284A EP 1070152 A1 EP1070152 A1 EP 1070152A1
Authority
EP
European Patent Office
Prior art keywords
alloy
tial
tial base
base alloy
copper
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
Application number
EP99913284A
Other languages
German (de)
English (en)
Other versions
EP1070152B1 (fr
Inventor
Georg Frommeyer
Jürgen Wesemann
Sven Knippscheer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1070152A1 publication Critical patent/EP1070152A1/fr
Application granted granted Critical
Publication of EP1070152B1 publication Critical patent/EP1070152B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

  • the invention relates to a TiAl base alloy with a composition of titanium aluminide with 42 to 54 at.% Al, the remainder being titanium, to which further alloying elements can be added up to 12 at.
  • the invention is based on the object of modifying a TiAl base alloy in such a way that it has better properties than conventional alloys based on it in several respects. In particular, improved castability, formability and ductility with higher strength is sought.
  • a TiAl base alloy which contains 0.1 to 5 at.% Cu, preferably 0.2 to 1 at.% Cu.
  • the alloy may contain 0.1 to 2 at.% Si, preferably 0.1 to 0.3 at.% Si, and / or 0.1 to 5 at.% Mo, preferably 0.4 to 1, 2 at.% Mo, and / or 0.1 to 5 at.% Cr, preferably 0.4 to 1.2 at.% Cr, and up to a total of 12 at.% Further alloy elements.
  • one or more of the strength-increasing elements Nb, Mn, V, B, W, Ti, Ta, Zr m of the alloy can be contained as "further alloy elements".
  • the invention has proven to be particularly advantageous for the following alloys: - 2 -
  • the addition of copper to TiAl provided according to the invention results in a greatly reduced grain size or a significantly finer structured casting structure compared to TiAl base alloys without the addition of copper.
  • Lamellar TiAl base alloys with copper addition also have reduced lamella spacing. These effects are reinforced by the addition of silicon.
  • the addition of copper leads to an increased strength of TiAl base alloys with increased ductility compared to comparable alloys. Arm formability is also improved. As a result, the forming of TiAl base alloys with copper addition can be carried out with lower forces or at lower temperatures than with comparable alloys.
  • At least 0.1 at% Cu is required to achieve the desired effects. More than 5 at.-o cause embrittlement and are therefore not useful. Even small amounts of the order of magnitude up to 0.2 at.% Cu improve the castability by reducing the melt viscosity and, compared to comparable alloys without the addition of Cu, result in a significantly finer structured casting structure.
  • Figure 1 shows the solidification structure of a T1AIM0S1 alloy.
  • TiAl base alloys with copper addition represented by the T ⁇ 52 Al 4 6 sCu.Sio 2 ⁇ alloy according to Figure 2
  • Figures 3 and 4 show, the grain-refining influence of the - 3 -
  • Copper additive to TiAl is also pronounced after the alloy has been annealed for 30 mm at 1400 ° C.
  • Figure 5 shows the temperature-dependent fracture upsets of modified TiAl alloys with copper addition compared to a TI 52 A1 P and a TiAlMoSi alloy.
  • the strength of TiAl base alloys is significantly increased by the addition of copper to TiAl provided according to the invention.
  • the comparatively steep drop in strength at temperatures> 800 ° C for the TiAl base alloys with copper addition leads to improved hot formability.
  • R c S ⁇ 2- alloy has, for example with upsetting boundaries between 580 MPa at room temperature and 538 MPa at 800 ° C, a higher compression strength than an already high strength T I 5 Al "M ⁇ S ⁇ 0 -? Alloy.
  • the TiAl base alloy according to the invention is suitable as a construction material for cast female parts, but also for parts which are produced by extrusion, isothermal forging and / or superplastic forming to the desired final shape.
  • Application examples are valves for internal combustion engines, piston crown segments, turbocharger rotors and components for turbines and compressors.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Vapour Deposition (AREA)
  • Conductive Materials (AREA)
  • Forging (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Continuous Casting (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP99913284A 1998-03-21 1999-03-20 PREALLIAGE DE TiAl Expired - Lifetime EP1070152B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19812444A DE19812444B4 (de) 1998-03-21 1998-03-21 TiAl-Basislegierung
DE19812444 1998-03-21
PCT/EP1999/001868 WO1999049090A1 (fr) 1998-03-21 1999-03-20 PREALLIAGE DE TiAl

Publications (2)

Publication Number Publication Date
EP1070152A1 true EP1070152A1 (fr) 2001-01-24
EP1070152B1 EP1070152B1 (fr) 2004-03-03

Family

ID=7861797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99913284A Expired - Lifetime EP1070152B1 (fr) 1998-03-21 1999-03-20 PREALLIAGE DE TiAl

Country Status (5)

Country Link
EP (1) EP1070152B1 (fr)
AT (1) ATE260996T1 (fr)
AU (1) AU3146799A (fr)
DE (1) DE19812444B4 (fr)
WO (1) WO1999049090A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2339040A1 (fr) * 2006-03-17 2011-06-29 University of Tsukuba Actionneur et moteur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3492118B2 (ja) * 1996-10-28 2004-02-03 三菱重工業株式会社 ＴｉＡｌ金属間化合物基合金
GB0512836D0 (en) * 2005-06-21 2005-08-03 Jha Animesh Inert alloy anodes for aluminium electrolysis cell using molten salt bath confidential
WO2006136785A2 (fr) * 2005-06-21 2006-12-28 University Of Leeds Electrode

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179006B (de) * 1952-12-18 1964-10-01 Crucible Steel Internat Titanlegierungen
US4865666A (en) * 1987-10-14 1989-09-12 Martin Marietta Corporation Multicomponent, low density cubic L12 aluminides
JP2952924B2 (ja) * 1990-01-30 1999-09-27 日本鋼管株式会社 ＴｉＡｌ基耐熱合金及びその製造方法
JP2817427B2 (ja) * 1991-01-08 1998-10-30 三菱マテリアル株式会社 強度および延性に優れたＴｉＡｌ金属間化合物系Ｔｉ合金の製造法
JPH05230570A (ja) * 1992-02-21 1993-09-07 Toyota Motor Corp 高延性ＴｉＡｌ基合金
JPH06116692A (ja) * 1992-10-05 1994-04-26 Honda Motor Co Ltd 高温強度の優れたＴｉＡｌ系金属間化合物およびその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9949090A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2339040A1 (fr) * 2006-03-17 2011-06-29 University of Tsukuba Actionneur et moteur
EP2341158A1 (fr) * 2006-03-17 2011-07-06 University of Tsukuba Actionneur et moteur

Also Published As

Publication number Publication date
WO1999049090A1 (fr) 1999-09-30
ATE260996T1 (de) 2004-03-15
DE19812444B4 (de) 2004-02-19
AU3146799A (en) 1999-10-18
EP1070152B1 (fr) 2004-03-03
DE19812444A1 (de) 1999-09-30

Similar Documents

Publication Publication Date Title
DE69014085T2 (de) Oxidationsbeständige Legierungen mit niedrigem Ausdehnungskoeffizient.
DE602006000160T2 (de) Hitzbeständige Legierung für bei 900oC nachhaltige Auslassventile und Auslassventile aus dieser Legierung
DE3024645C2 (fr)
DE69400848T2 (de) Titanaluminid-Legierungen mit guter Kriechfestigkeit
DE102007060587B4 (de) Titanaluminidlegierungen
DE60316212T2 (de) Nickelbasislegierung, heissbeständige Feder aus dieser Legierung und Verfahren zur Herstellung dieser Feder
DE2415074C2 (de) Verwendung einer Superlegierung auf Nickelbasis zur Herstellung von Gasturbinenteilen
EP3176275B2 (fr) Alliage de coulée sous pression de silicium/aluminium. procédé de fabrication d'un composant coulé sous pression en alliage et composants de carrosserie comprenant un tel composant coulé sous pression
DE3030962A1 (de) Ein- und polykristalline legierung auf nickel- oder kobalt-basis.
DE3887259T2 (de) Gamma-Prime-Phase enthaltende Legierungen und Verfahren zu ihrer Formung.
WO2014121785A1 (fr) Alliage d'al de fonderie
WO2009010264A2 (fr) Alliage de fonderie d'aluminium et utilisation
WO2004003244A1 (fr) Alliage al-cu-mg-ag avec si, produit semi-fini realise a partir de cet alliage, et procede de realisation d'un produit semi-fini de ce type
DE10323741B3 (de) Hoch- und warmfeste, zähe Al-Gusslegierungen
DE19756354B4 (de) Schaufel und Verfahren zur Herstellung der Schaufel
WO2017174185A1 (fr) Alliage d'aluminium destiné notamment à un procédé de coulée, et procédé de fabrication d'une pièce dans un tel alliage d'aluminium
EP2620517A1 (fr) Alliage TiAl thermostable
AT399165B (de) Legierung auf chrombasis
DE1921359B2 (de) Verfahren zur Erhöhung der Duktilität bei hohen Temperaturen von Gußlegierungen auf Nickelbasis
EP1645647B1 (fr) Alliage d'aluminium à vieillissement à froid et procédé de fabrication d'une pièce coulée
EP3810818B1 (fr) Alliage d'aluminium, procédé de fabrication d'un élément du moteur, élément du moteur et utilisation d'un alliage d'aluminium pour la fabrication d'un élément du moteur
EP1070152A1 (fr) PREALLIAGE DE TiAl
WO2012041276A2 (fr) Alliage tial résistant à la chaleur
EP3423606A1 (fr) Alliage de fonderie à l'aluminium
DE102014224229A1 (de) Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000930

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FR GB IT

17Q First examination report despatched

Effective date: 20020701

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

RBV Designated contracting states (corrected)

Designated state(s): AT FR GB IT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040727

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20041206

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20090327

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090323

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090327

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090323

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100320

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100320

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100320