EP1195445A1 - Legierung auf der AlTi Basis mit Bor, Wolfram und Silizium - Google Patents
Legierung auf der AlTi Basis mit Bor, Wolfram und Silizium Download PDFInfo
- Publication number
- EP1195445A1 EP1195445A1 EP01123551A EP01123551A EP1195445A1 EP 1195445 A1 EP1195445 A1 EP 1195445A1 EP 01123551 A EP01123551 A EP 01123551A EP 01123551 A EP01123551 A EP 01123551A EP 1195445 A1 EP1195445 A1 EP 1195445A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- balance
- tungsten
- silicon
- rest
- 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
Images
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 high temperature alloy for thermal Machines based on intermetallic compounds, which are suitable for Investment casting and directional solidification are suitable, as are conventional nickel-based superalloys complete.
- Intermetallic compounds of titanium with aluminum have some interesting properties, which they as construction materials in the middle and higher temperature range appear attractive. That is part of it among other things, their lower density compared to superalloys. Of their technical usability in its present form stands for its brittleness opposite. This can be improved with certain additives.
- the heat resistance of the known aluminides leaves a lot to be desired.
- the strength, in particular the creep resistance, in the upper temperature range insufficient.
- EP-A1-0 363 598 describes a high-temperature alloy based on TiAl Additions to Si and Nb emerge, but one from EP-A1-0 405 134 High temperature alloy based on TiAl with additions of Si and Cr.
- the invention attempts to further increase this known high temperature alloy improve. It is based on the task of using a light alloy improved heat resistance and ductility at high temperatures (in the range from 600 to 1000 ° C) and good oxidation and corrosion resistance specify that is well suited for directional solidification or for investment casting and in consists essentially of a high-melting intermetallic compound.
- the core of the invention is compared to the known alloys on the one hand reduced AI content, on the other hand the possibility of a much higher B content to realize.
- the advantages of the invention are that by combining the Alloying elements mentioned, but especially due to the higher B content succeeds on the one hand a very fine grain in both thin and to produce large cross sections and thus the toughness and Increase creep resistance and good oxidation resistance to achieve.
- the lowering of the Al content compared to the known level technology increases strength, but at the same time favors that Grain coarsening.
- Boron on the other hand, stabilizes the grain boundaries, i.e. H. the higher Boron levels reduce grain coarsening.
- the individual elements with a degree of purity served as starting materials of 99.99%.
- the melt became a cast blank of approximately 50 mm each Molded diameter and approx. 70 mm height. These blanks were under Protective gas melted again and also under protective gas for solidification in the form of rods with a diameter of approx. 9 mm and a length of approx. 70 mm forced. These rods were a HIP (HOT ISOSTATIC PRESSING) and Subjected to heat treatment and then processed into tensile tests. The HIP treatment was carried out for 4 hours at a temperature of 1260 ° C and a pressure of 172 MPa. The heat treatment was carried out under protective gas following parameters: 1350 ° C / 1 h + 1000 ° C / 6 h.
- Figures 1 to 6 show the structure of the alloys L1, L2, L3, L4 as well as V1 and V2.
- the structure of the alloys L1, L2, L3 and L4 according to the invention (FIGS. 1 to 4) is much more fine-grained than the structure of the comparative alloy V1 (FIG. 5), which is alloyed with lower B contents or than the comparative alloy VL2, which contains no boron.
- alloy 7 shows a diagram for the alloys L1, L2 and L3 according to the invention as well as the comparative alloys V1 and V2 the hardness values depending on Boron content. Alloys L1, L2 and L3 show a greater hardness than the comparison alloys. The hardness values are particularly good Alloy L1 according to the invention with 1.8 at.% boron.
- the area of application of the modified titanium aluminides advantageously extends to a temperature range between 600 and 1000 ° C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
El = B, Ge oder Si und Me = Cr, Mn, Nb, Pd, Ta, W, Y, Zr und es gilt:
- Fig.
- 1 eine Gefügebild einer erfindungsgemässen Legierung L1 mit folgender Zusammensetzung: Al 45 At.%, W 2 At.%, Si 0,4 At.%, B 1,8 At.%, Rest Ti;
- Fig. 2
- eine Gefügebild einer erfindungsgemässen Legierung L2 mit folgender Zusammensetzung: Al 45 At.%, W 2 At.%, Si 0,47 At.%, B 2,5 At.%, Rest Ti;
- Fig. 3
- ein Gefügebild einer erfindungsgemässen Legierung L3 mit folgender Zusammensetzung: Al 45 At.%, W 1,9 At.%, Si 0,46 At.%, B 3,5 At.%, Rest Ti;
- Fig. 4
- ein Gefügebild einer erfindungsgemässen Legierung L4 mit folgender Zusammensetzung: Al 44,9 At.%, W 1,9 At.%, Si 0,46 At.%, B 4 At.%, Rest Ti;
- Fig. 5
- ein Gefügebild einer Vergleichslegierung V1 mit folgender Zusammensetzung: Al 46 At.%, W 2 At.%, Si 0,48 At.%, B 0,7 At.%, Rest Ti;
- Fig. 6
- ein Gefügebild einer Vergleichslegierung V2 mit folgender Zusammensetzung: Al 47 At.%, W 2 At.%, Si 0,5 At.%, Rest Ti;
- Fig. 7
- eine Darstellung der Härte in Abhängigkeit vom Bor-Gehalt.
Legierung | Ti | Al | W | Si | B |
L1 | Rest | 45 | 2 | 0,40 | 1,8 |
L2 | Rest | 45 | 2 | 0,47 | 2,5 |
L2 | Rest | 45 | 1,9 | 0,46 | 3,5 |
L4 | Rest | 44,9 | 1,9 | 0,46 | 4,0 |
V1 | Rest | 46 | 2 | 0,48 | 0,7 |
V2 | Rest | 47 | 2 | 0,50 | 0 |
Claims (3)
- Hochtemperaturlegierung für ein mechanisch hochbeanspruchtes Bauteil einer thermischen Maschine auf der Basis von dotiertem TiAl mit folgender Zusammensetzung (in Atom%):44,5 bis <46 Al1-4 W0,1-1,5 Si0.0001-4 B.
- Hochtemperaturlegierung nach Anspruch 1 mit folgender Zusammensetzung (in Atom%):44,5 bis <46 Al1-3 W0,4-1 Si1-4 B
- Hochtemperaturlegierung nach Anspruch 1 mit folgender Zusammensetzung (in Atom%):45 Al2W0,5 Si2B
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10049026A DE10049026A1 (de) | 2000-10-04 | 2000-10-04 | Hochtemperaturlegierung |
DE10049026 | 2000-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1195445A1 true EP1195445A1 (de) | 2002-04-10 |
EP1195445B1 EP1195445B1 (de) | 2004-02-11 |
Family
ID=7658584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01123551A Expired - Lifetime EP1195445B1 (de) | 2000-10-04 | 2001-10-01 | Ti Al-Legierung mit Bor, Wolfram und Silizium |
Country Status (3)
Country | Link |
---|---|
US (1) | US6676897B2 (de) |
EP (1) | EP1195445B1 (de) |
DE (2) | DE10049026A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109280786A (zh) * | 2018-11-22 | 2019-01-29 | 河北四通新型金属材料股份有限公司 | 一种铝钨中间合金及其生产方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4842820A (en) * | 1987-12-28 | 1989-06-27 | General Electric Company | Boron-modified titanium aluminum alloys and method of preparation |
EP0455005A1 (de) * | 1990-05-04 | 1991-11-06 | Asea Brown Boveri Ag | Hochtemperaturlegierung für Maschinenbauteile auf der Basis von dotiertem Titanaluminid |
US5908516A (en) * | 1996-08-28 | 1999-06-01 | Nguyen-Dinh; Xuan | Titanium Aluminide alloys containing Boron, Chromium, Silicon and Tungsten |
DE19933633A1 (de) * | 1999-07-17 | 2001-01-18 | Abb Alstom Power Ch Ag | Hochtemperaturlegierung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3203794A (en) | 1957-04-15 | 1965-08-31 | Crucible Steel Co America | Titanium-high aluminum alloys |
US4983357A (en) | 1988-08-16 | 1991-01-08 | Nkk Corporation | Heat-resistant TiAl alloy excellent in room-temperature fracture toughness, high-temperature oxidation resistance and high-temperature strength |
US5045406A (en) | 1989-06-29 | 1991-09-03 | General Electric Company | Gamma titanium aluminum alloys modified by chromium and silicon and method of preparation |
US5370839A (en) * | 1991-07-05 | 1994-12-06 | Nippon Steel Corporation | Tial-based intermetallic compound alloys having superplasticity |
US5226985A (en) * | 1992-01-22 | 1993-07-13 | The United States Of America As Represented By The Secretary Of The Air Force | Method to produce gamma titanium aluminide articles having improved properties |
US5328530A (en) * | 1993-06-07 | 1994-07-12 | The United States Of America As Represented By The Secretary Of The Air Force | Hot forging of coarse grain alloys |
USH1659H (en) * | 1995-05-08 | 1997-07-01 | The United States Of America As Represented By The Secretary Of The Air Force | Method for heat treating titanium aluminide alloys |
US5653828A (en) * | 1995-10-26 | 1997-08-05 | National Research Council Of Canada | Method to procuce fine-grained lamellar microstructures in gamma titanium aluminides |
DE19756354B4 (de) * | 1997-12-18 | 2007-03-01 | Alstom | Schaufel und Verfahren zur Herstellung der Schaufel |
-
2000
- 2000-10-04 DE DE10049026A patent/DE10049026A1/de not_active Withdrawn
-
2001
- 2001-10-01 EP EP01123551A patent/EP1195445B1/de not_active Expired - Lifetime
- 2001-10-01 DE DE50101467T patent/DE50101467D1/de not_active Expired - Lifetime
- 2001-10-03 US US09/969,026 patent/US6676897B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4842820A (en) * | 1987-12-28 | 1989-06-27 | General Electric Company | Boron-modified titanium aluminum alloys and method of preparation |
US4842820B1 (de) * | 1987-12-28 | 1992-05-12 | Gen Electric | |
EP0455005A1 (de) * | 1990-05-04 | 1991-11-06 | Asea Brown Boveri Ag | Hochtemperaturlegierung für Maschinenbauteile auf der Basis von dotiertem Titanaluminid |
US5908516A (en) * | 1996-08-28 | 1999-06-01 | Nguyen-Dinh; Xuan | Titanium Aluminide alloys containing Boron, Chromium, Silicon and Tungsten |
DE19933633A1 (de) * | 1999-07-17 | 2001-01-18 | Abb Alstom Power Ch Ag | Hochtemperaturlegierung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109280786A (zh) * | 2018-11-22 | 2019-01-29 | 河北四通新型金属材料股份有限公司 | 一种铝钨中间合金及其生产方法 |
Also Published As
Publication number | Publication date |
---|---|
DE50101467D1 (de) | 2004-03-18 |
US6676897B2 (en) | 2004-01-13 |
US20030124021A1 (en) | 2003-07-03 |
EP1195445B1 (de) | 2004-02-11 |
DE10049026A1 (de) | 2002-04-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0455005B1 (de) | Hochtemperaturlegierung für Maschinenbauteile auf der Basis von dotiertem Titanaluminid | |
DE3024645C2 (de) | ||
DE69400848T2 (de) | Titanaluminid-Legierungen mit guter Kriechfestigkeit | |
EP0464366B1 (de) | Verfahren zur Herstellung eines Werkstücks aus einer dotierstoffhaltigen Legierung auf der Basis Titanaluminid | |
EP1287173B1 (de) | Bauteil auf basis von gamma-tial-legierungen mit bereichen mit gradiertem gefüge | |
DE69734515T2 (de) | Gesinterte hartlegierung | |
DE2644041A1 (de) | Gedaechtnislegierung | |
CH668269A5 (de) | Aluminium-knetlegierung des typs al/cu/mg mit hoher festigkeit im temperaturbereich zwischen 0 und 250 c. | |
EP1188845B1 (de) | Nickelbasislegierung für die Hochtemperaturtechnik | |
DE60003802T2 (de) | Titanbasislegierung | |
DE10329899B3 (de) | Beta-Titanlegierung, Verfahren zur Herstellung eines Warmwalzproduktes aus einer solchen Legierung und deren Verwendungen | |
DE2630141C2 (de) | Verwendung einer Wolfram, Silizium und/oder Titan enthaltenden Eisenlegierung zur Herstellung von Teilen mit hoher Dämpfungsfähigkeit | |
EP0465686B1 (de) | Oxydations- und korrosionsbeständige Legierung für Bauteile für einen mittleren Temperaturbereich auf der Basis von dotiertem Eisenaluminid Fe3Al | |
DE3880936T2 (de) | Silicium-modifizierte ferritische Legierung mit niedrigem Chromgehalt für Hochtemperaturverwendungen. | |
DE69208320T2 (de) | Hochfeste Legierung auf Aluminiumbasis mit hoher Zähigkeit | |
DE1921359A1 (de) | Gusslegierungen | |
EP1645647B1 (de) | Kaltaushärtende Aluminiumgusslegierung und Verfahren zur Herstellung eines Aluminiumgussteils | |
DE3903682A1 (de) | Durch stickstoff verfestigte fe-ni-cr-legierung | |
EP1195445B1 (de) | Ti Al-Legierung mit Bor, Wolfram und Silizium | |
EP3447158B1 (de) | Schwefelhaltige metallische gläser bildende legierung | |
DE19933633A1 (de) | Hochtemperaturlegierung | |
DE10054229B4 (de) | Hochtemperaturlegierung | |
DE4011129A1 (de) | Tantalhaltige superlegierungen | |
DE69406602T2 (de) | Hochfeste und hochduktile auf TIAL basierende intermetallische Verbindung | |
EP1070152B1 (de) | TiAl-BASISLEGIERUNG |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Kind code of ref document: A1 Designated state(s): DE GB |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ALSTOM (SWITZERLAND) LTD |
|
17P | Request for examination filed |
Effective date: 20020911 |
|
AKX | Designation fees paid |
Free format text: DE GB |
|
17Q | First examination report despatched |
Effective date: 20030113 |
|
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 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE GB |
|
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: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50101467 Country of ref document: DE Date of ref document: 20040318 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040419 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
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: 20041112 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50101467 Country of ref document: DE Representative=s name: ROESLER, UWE, DIPL.-PHYS.UNIV., DE Ref country code: DE Ref legal event code: R081 Ref document number: 50101467 Country of ref document: DE Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH Ref country code: DE Ref legal event code: R081 Ref document number: 50101467 Country of ref document: DE Owner name: ANSALDO ENERGIA IP UK LIMITED, GB Free format text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50101467 Country of ref document: DE Representative=s name: ROESLER, UWE, DIPL.-PHYS.UNIV., DE Ref country code: DE Ref legal event code: R081 Ref document number: 50101467 Country of ref document: DE Owner name: ANSALDO ENERGIA IP UK LIMITED, GB Free format text: FORMER OWNER: GENERAL ELECTRIC TECHNOLOGY GMBH, BADEN, CH |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20170824 AND 20170830 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20171019 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20171019 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50101467 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20181001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190501 |
|
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: 20181001 |