WO1993023582A1 - Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente - Google Patents
Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente Download PDFInfo
- Publication number
- WO1993023582A1 WO1993023582A1 PCT/DE1993/000450 DE9300450W WO9323582A1 WO 1993023582 A1 WO1993023582 A1 WO 1993023582A1 DE 9300450 W DE9300450 W DE 9300450W WO 9323582 A1 WO9323582 A1 WO 9323582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- titanium
- aluminum
- heat treatment
- heat
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 229910010038 TiAl Inorganic materials 0.000 claims abstract description 9
- 229910021330 Ti3Al Inorganic materials 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 17
- 229910021324 titanium aluminide Inorganic materials 0.000 claims description 13
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 238000010587 phase diagram Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 229910000967 As alloy Inorganic materials 0.000 claims 1
- 230000007774 longterm Effects 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 239000010410 layer Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004349 Ti-Al Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910004692 Ti—Al Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
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 component according to the preamble of claim 1. Furthermore, the invention relates to a method for producing such components based on intermetallic phases of the titanium-aluminum system with an aluminum content between 42 at% and 53 at%. .
- Intermetallic phases are currently of increasing interest as potentially suitable construction materials for highly stressed components at high operating temperatures.
- the intermetallic phases based on titanium aluminide have many possible uses, for example due to their good strength at high temperatures in combination with low density, e.g. in cases where the mechanical component load is - partly - due to the occurrence of centrifugal forces.
- the turbine blades are mentioned here as examples.
- titanium aluminides with an aluminum content in the range of 42-53 at%, in particular in the range of 45-50 at%, are particularly important with regard to their good mechanical properties.
- the phase diagram of the titanium-aluminum system shows the intermetallic phases i3Al and TiAl in this aluminum concentration range.
- these materials show poor oxidation or corrosion resistance disadvantageously at operating temperatures of a component on this basis in the range from 700 ° C. to approximately 900 ° C.
- This disadvantage is justified by the fact that the titanium aluminides mentioned do not form protective, stable oxide layers based on Al 2 O 3 at these temperatures, despite the high aluminum content. Instead, layers based on iO 2, which have a high oxidation rate, should actually be formed, especially after longer oxidation times. This leads to a rapid loss of wall thickness and thus to damage to a component made from this material.
- oxidation-inhibiting protective layers e.g. of the type Ni (Co) CrAlY known.
- protective layers applied to titanium aluminide could adversely affect the material properties of this material, in particular through interdiffusion processes which can greatly reduce the mechanical properties, in particular the resilience of the material.
- protective layers always show manufacturing and / or operational defects, such as Pores or cracks, which can lead to strong local corrosion of the material covered by this protective layer - here titanium aluminide.
- the object of the invention is achieved by a component according to claim 1. 20
- a titanium aluminide with aluminum contents of 42-53 at% aluminum is not only dependent on the active composition of the material or the alloy, but rather on the structure.
- a titanium aluminide with a given composition can, when aged in the above-mentioned temperature range, up to 900 ° C., in particular 700-900 ° C., both have a slowly growing A ⁇ O ⁇ Layer as well as a fast growing iÜ2 layer.
- titanium aluminide if, in addition to such a eutectoid structure, there are also primary and secondary precipitated TiAl phases in the surface area, this material locally leads to a TiO 2 layer formation when used at high temperatures up to 900 ° C which spreads over the entire surface of the material in a disadvantageous manner after a longer exposure time.
- the formation of the A ⁇ O layer which is favorable for the oxidation and corrosion resistance of the material, is ensured if the component made of titanium aluminide shows a structure on the surface with a completely eutectoid surface action, with a lamellar, Ti Al / TiAl structure.
- the desired structure on the surface of the components produced in this way can be obtained directly by quenching sufficiently quickly.
- such a component can be suitably used heat treated in such a way that according to subsequent, sufficiently rapid quenching, such a component also has the desired structure on the surface.
- the component is advantageously heat-treated at a temperature at which, according to the Ti-Al phase diagram, only -Ti is present if possible.
- the optimal heat treatment temperature should be at least as close as possible to the stability range of the ⁇ -Ti in the phase diagram. If the starting material of the component is not binary titanium aluminide but one with additional ternary or quaternary alloy additives, the most suitable heat treatment temperature can be determined experimentally for this case.
- the heat treatment temperature is selected in the range from 1300 ° C. to 1430 ° C., in particular at 1400 ° C.
- the duration of the heat treatment should expediently be up to several hours, e.g. up to 4 hours, in particular 30 minutes to 4 hours.
- an additional heat treatment of the surface of the already heat-treated component is taught. This is particularly important if the lamellar eutectoid structure generated by the first heat treatment is incomplete on the surface of the component. It is conceivable, for example, that the surface of the initially heat-treated component is still mechanically processed so that the the lamellar structure initially obtained is partly or more mechanically removed from the component in a more or less way. Such an additional heat treatment can be carried out, in particular in the surface area which no longer has this desired structure.
- a locally defined heat treatment using a laser, an electron beam or a high-frequency induction coil is proposed.
- a combination of these surface treatment methods can also be used.
- a surface zone of up to 100 ⁇ m or more can be melted locally or up to sufficiently high temperatures, in particular in the above-mentioned stability range of the ⁇ -Ti, e.g. about 1400 ° C, are heated.
- the width of the heat-treated surface zone can be set in a targeted manner. For example, A small width of this zone has the advantage that the interior of the component component is influenced as little as possible in its mechanical properties.
- An advantageous variant of the method according to the invention finally results in the event that the component is heat-treated with the aid of a high-frequency heating, in particular with the aid of a high-frequency induction coil.
- This component is the desired depth of penetration of the surface structure made of fine lamellar, eutectoidal Ti3Al / TiAl structure is moved through the coil at a suitable speed.
- the penetration depth of the favorable lamellar structure can be set locally in a defined manner.
- the surface methods mentioned can also be used for the first coating of a component according to the invention with a structure structured in the desired manner. These methods are therefore not limited to use for a further one after an initial heat treatment.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
- Ceramic Products (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/325,289 US5540792A (en) | 1992-05-12 | 1993-05-11 | Components based on intermetallic phases of the system titanium-aluminum and process for producing such components |
DE59309979T DE59309979D1 (de) | 1992-05-12 | 1993-05-11 | Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente |
AT93909788T ATE190672T1 (de) | 1992-05-12 | 1993-05-11 | Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente |
EP93909788A EP0640150B1 (de) | 1992-05-12 | 1993-05-11 | Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4215017A DE4215017C2 (de) | 1992-05-12 | 1992-05-12 | Verfahren zur Herstellung einer Komponente auf der Basis intermetallischer Phasen des Systems Titan-Aluminium |
DEP4215017.5 | 1992-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993023582A1 true WO1993023582A1 (de) | 1993-11-25 |
Family
ID=6458327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/000450 WO1993023582A1 (de) | 1992-05-12 | 1993-05-11 | Komponente auf der basis intermetallischer phasen des systems titan-aluminium und verfahren zur herstellung solcher komponente |
Country Status (5)
Country | Link |
---|---|
US (1) | US5540792A (de) |
EP (1) | EP0640150B1 (de) |
AT (1) | ATE190672T1 (de) |
DE (2) | DE4215017C2 (de) |
WO (1) | WO1993023582A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0716154A2 (de) * | 1994-12-05 | 1996-06-12 | DECHEMA Deutsche Gesellschaft für Chemisches Apparatewesen, Chemische Technik und Biotechnologie e.V. | Hochtermperaturbeständiger, korrosionsfester Werkstoff |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19539303A1 (de) * | 1995-10-23 | 1997-04-24 | Dechema | Verfahren zur Erhöhung der Korrosionsbeständigkeit von über den pulvermetallurgischen Verfahrensweg hergestellten Werkstoffen auf der Basis TiAl |
US6149801A (en) | 1997-08-08 | 2000-11-21 | Water Pik, Inc,. | Water treatment device with volumetric monitoring features |
DE10056617C2 (de) * | 2000-11-15 | 2002-12-12 | Forschungszentrum Juelich Gmbh | Werkstoff für temperaturbelastete Substrate |
US10179377B2 (en) | 2013-03-15 | 2019-01-15 | United Technologies Corporation | Process for manufacturing a gamma titanium aluminide turbine component |
CN113981273B (zh) * | 2021-11-04 | 2022-05-27 | 四川大学 | 一种初始凝固相为α相的多取向片层组织TiAl合金及其制备方法和应用 |
CN114000076B (zh) * | 2021-11-04 | 2022-05-27 | 四川大学 | 一种初始凝固相为β相的多取向片层组织TiAl合金及其制备方法和应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0365174A1 (de) * | 1988-10-05 | 1990-04-25 | Daido Tokushuko Kabushiki Kaisha | Intermetallische TiAl-Ti3Al-Verbundwerkstoffe |
EP0521516A1 (de) * | 1991-07-05 | 1993-01-07 | Nippon Steel Corporation | Auf TiAl basierende intermetallische Verbindung, Legierungen und Verfahren zur Herstellung dieser |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250931A (ja) * | 1989-03-23 | 1990-10-08 | Nkk Corp | 破壊靭性に優れた金属間化合物TiAl基合金溶製材 |
JP2687641B2 (ja) * | 1989-12-27 | 1997-12-08 | 三菱マテリアル株式会社 | 高靭性TiA▲l▼金属間化合物系Ti合金材の製造法 |
JPH0463237A (ja) * | 1990-06-29 | 1992-02-28 | Honda Motor Co Ltd | 高延性TiAl系金属間化合物 |
JPH04124236A (ja) * | 1990-09-14 | 1992-04-24 | Sumitomo Light Metal Ind Ltd | 耐酸化性に優れたTiAl系金属間化合物 |
JPH04218649A (ja) * | 1990-12-17 | 1992-08-10 | Kobe Steel Ltd | Ti−Al系金属間化合物型合金の製造方法 |
JP2813516B2 (ja) * | 1992-11-13 | 1998-10-22 | 三菱重工業株式会社 | TiAl系金属間化合物とその製法 |
-
1992
- 1992-05-12 DE DE4215017A patent/DE4215017C2/de not_active Expired - Fee Related
-
1993
- 1993-05-11 DE DE59309979T patent/DE59309979D1/de not_active Expired - Fee Related
- 1993-05-11 US US08/325,289 patent/US5540792A/en not_active Expired - Fee Related
- 1993-05-11 AT AT93909788T patent/ATE190672T1/de not_active IP Right Cessation
- 1993-05-11 WO PCT/DE1993/000450 patent/WO1993023582A1/de active IP Right Grant
- 1993-05-11 EP EP93909788A patent/EP0640150B1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0365174A1 (de) * | 1988-10-05 | 1990-04-25 | Daido Tokushuko Kabushiki Kaisha | Intermetallische TiAl-Ti3Al-Verbundwerkstoffe |
EP0521516A1 (de) * | 1991-07-05 | 1993-01-07 | Nippon Steel Corporation | Auf TiAl basierende intermetallische Verbindung, Legierungen und Verfahren zur Herstellung dieser |
Non-Patent Citations (6)
Title |
---|
MASSALSKI, T.B. 'BINARY ALLOY PHASE DIAGRAMS' 1990 , WILLIAM W. SCOTT, JR. , US see page 225 - page 226 * |
PATENT ABSTRACTS OF JAPAN vol. 14, no. 571 (C-790)19. December 1990 & JP,A,2 250 931 (NKK CORP.) 8 October 1990 see abstract * |
PATENT ABSTRACTS OF JAPAN vol. 16, no. 265 (C-951)16 June 1992 & JP,A,4 063 237 (HONDA MOTOR CO. LTD) 28 February 1992 see abstract * |
Week 9141, Derwent Publications Ltd., London, GB; AN 91-299807 & JP,A,3 199 358 (MITSUBISHI MATERIALS KK) see abstract * |
Week 9223, Derwent Publications Ltd., London, GB; AN 92-189294 & JP,A,4 124 236 (SUMITOMO LIGHT METAL IND. CO.) 24 April 1992 see abstract * |
Week 9238, Derwent Publications Ltd., London, GB; AN 92-312611 & JP,A,4 218 649 (KOBE STEEL LTD) 10 August 1992 see abstract * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0716154A2 (de) * | 1994-12-05 | 1996-06-12 | DECHEMA Deutsche Gesellschaft für Chemisches Apparatewesen, Chemische Technik und Biotechnologie e.V. | Hochtermperaturbeständiger, korrosionsfester Werkstoff |
EP0716154A3 (de) * | 1994-12-05 | 1996-10-16 | Dechema | Hochtermperaturbeständiger, korrosionsfester Werkstoff |
Also Published As
Publication number | Publication date |
---|---|
EP0640150B1 (de) | 2000-03-15 |
US5540792A (en) | 1996-07-30 |
DE59309979D1 (de) | 2000-04-20 |
DE4215017C2 (de) | 2000-01-13 |
ATE190672T1 (de) | 2000-04-15 |
DE4215017A1 (de) | 1993-11-18 |
EP0640150A1 (de) | 1995-03-01 |
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