EP0217807A1 - Sinterverfahren. - Google Patents
Sinterverfahren.Info
- Publication number
- EP0217807A1 EP0217807A1 EP86901044A EP86901044A EP0217807A1 EP 0217807 A1 EP0217807 A1 EP 0217807A1 EP 86901044 A EP86901044 A EP 86901044A EP 86901044 A EP86901044 A EP 86901044A EP 0217807 A1 EP0217807 A1 EP 0217807A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- intermetallic phases
- master alloy
- intermetallic
- elements
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/09—Mixtures of metallic powders
-
- 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
- C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
Definitions
- the invention relates to a method for producing complex shaped components from sinterable powder of intermetallic phases.
- Intermetallic phases in particular Ti Al, Ti Al, Ni Ni, Ni Al, have a low specific weight and a high melting point. Materials on this basis are therefore of interest for use in thermally and mechanically highly stressed components, in particular in aircraft engines.
- the materials have hitherto been produced by melt metallurgy or by reaction from the elements, ie. B. Al powder mixed with Ti powder and Nb powder and heated in a stamp press. When the chemical reaction begins, heat is generated and it is formed desired alloy. With this method it has so far not been possible to produce complicatedly shaped components in a simple manner.
- the object of the invention is to provide a method which makes it possible to easily produce components from intermetallic phases which are of complex shape. This is solved by the features of claim 1.
- the starting point is a pre-alloy of the intermetallic phase, which apart from inevitable impurities only contains it, e.g. E.g .: Ni, AI, Ni AI, Ti AI, Ti AI ,. This master alloy is melted.
- the master alloy can be ground to a fine powder in a manner known per se (impact mill, ball mill, air jet mill) or atomized (as known per se, for example from DE-AS 22 22 830) .
- This powder is now mixed with a powder of one or more other elements. It is desirable that these powders are finer than that of the intermetallic phase.
- the prepared powder mixture can now, apart from a shrinkage of 10 to 20% (vol.), Be brought to the final shape using known methods:
- Binder waxes, thermoplastics and / or thermosets CIP see e.g. B. DE 33 28 954 machining by grinding and polishing to final dimensions
- Expelling binder as in a) lubricants such as stearins.
- Injection molding on the machines customary for plastics for example with a heated screw conveyor and a mouthpiece or nozzle at the tip thereof, also injection molding, extrusion, extrusion.
- Lubricants and binders are removed by heat treatment in a manner known per se (heat treatment under vacuum or intergas up to 600 ° C.).
- the sintering takes place in the same atmosphere as the above heat treatment and under conditions known per se, in particular at temperatures above 900 C, but less than 95% of the melting temperature.
- the sintering can also take place in several stages.
- the elements that were added to increase the ductility also act as a sintering aid, so that at a temperature of 70 to 95% (wt.) Of the absolute Sintering can be carried out at the melting point of the intermetallic phase.
- densities of 95 to 99% of the theoretical density are reached within 0.1 to 24 hours.
- the parts can then be hot isostatically pressed in order to achieve practically 100% density.
- HIP conditions are also known per se, pressures up to about 2500 bar (gas) and temperatures up to about 2000 ° C.
- Turbine blades or wheels, turbochargers or other highly stressed parts hot, rotating "and / or chemically stressed), in particular of turbo machines.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86901044T ATE51548T1 (de) | 1985-02-16 | 1986-02-07 | Sinterverfahren. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853505481 DE3505481A1 (de) | 1985-02-16 | 1985-02-16 | Sinterverfahren |
DE3505481 | 1985-02-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0217807A1 true EP0217807A1 (de) | 1987-04-15 |
EP0217807B1 EP0217807B1 (de) | 1990-04-04 |
Family
ID=6262782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86901044A Expired - Lifetime EP0217807B1 (de) | 1985-02-16 | 1986-02-07 | Sinterverfahren |
Country Status (5)
Country | Link |
---|---|
US (1) | US4707332A (de) |
EP (1) | EP0217807B1 (de) |
JP (1) | JPS62501858A (de) |
DE (2) | DE3505481A1 (de) |
WO (1) | WO1986004840A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3822686A1 (de) * | 1988-07-05 | 1990-01-11 | Geesthacht Gkss Forschung | Verfahren zur herstellung von intermetallischen phasen aus pulverfoermigen duktilen komponenten |
US4927458A (en) * | 1988-09-01 | 1990-05-22 | United Technologies Corporation | Method for improving the toughness of brittle materials fabricated by powder metallurgy techniques |
DE3935955C1 (de) * | 1989-10-27 | 1991-01-24 | Mtu Muenchen Gmbh | |
SE9100675D0 (sv) * | 1991-03-06 | 1991-03-06 | Sandvik Ab | Ceramic whisker-reinforced cutting tool with pre-formed chipbreakers for machining |
JP3071118B2 (ja) * | 1995-02-09 | 2000-07-31 | 日本原子力研究所 | 微細な添加元素が添加されたNiAl金属間化合物を製造する方法 |
DE19537657A1 (de) * | 1995-10-10 | 1997-04-17 | Abb Patent Gmbh | Verfahren und Vorrichtung zur Herstellung eines Kontaktstückes |
US20100178194A1 (en) * | 2009-01-12 | 2010-07-15 | Accellent, Inc. | Powder extrusion of shaped sections |
US9061351B2 (en) * | 2011-11-10 | 2015-06-23 | GM Global Technology Operations LLC | Multicomponent titanium aluminide article and method of making |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE897921C (de) * | 1938-02-13 | 1953-11-26 | Metallgesellschaft Ag | Verfahren zur Herstellung von Lagern aus Aluminium und seinen Legierungen durch Pressen und Sintern der pulverfoermigen Bestandteile |
FR1290458A (fr) * | 1960-05-14 | 1962-04-13 | Siemens Ag | Procédé de fabrication de matériaux thermoélectriques frittés |
NL127919C (de) * | 1961-01-09 | |||
DE2258780A1 (de) * | 1971-12-14 | 1973-06-28 | Goldschmidt Ag Th | Verfahren zum herstellen von permanentmagneten auf der basis von kobalt-seltene erden-legierungen |
DE2227700A1 (de) * | 1972-06-07 | 1974-01-03 | Gen Electric | Gesinterte intermetallische verbindungen aus kobalt und seltenem erdmetall |
US3953205A (en) * | 1973-06-06 | 1976-04-27 | United Technologies Corporation | Production of homogeneous alloy articles from superplastic alloy particles |
US4347076A (en) * | 1980-10-03 | 1982-08-31 | Marko Materials, Inc. | Aluminum-transition metal alloys made using rapidly solidified powers and method |
FR2537655A1 (fr) * | 1982-12-09 | 1984-06-15 | Cegedur | Chemises de moteurs a base d'alliages d'aluminium et de composes intermetalliques et leurs procedes d'obtention |
US4624705A (en) * | 1986-04-04 | 1986-11-25 | Inco Alloys International, Inc. | Mechanical alloying |
-
1985
- 1985-02-16 DE DE19853505481 patent/DE3505481A1/de not_active Withdrawn
-
1986
- 1986-02-07 EP EP86901044A patent/EP0217807B1/de not_active Expired - Lifetime
- 1986-02-07 WO PCT/DE1986/000044 patent/WO1986004840A1/de active IP Right Grant
- 1986-02-07 DE DE8686901044T patent/DE3670016D1/de not_active Expired - Lifetime
- 1986-02-07 JP JP61501038A patent/JPS62501858A/ja active Pending
- 1986-02-07 US US07/002,403 patent/US4707332A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8604840A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1986004840A1 (en) | 1986-08-28 |
DE3670016D1 (de) | 1990-05-10 |
EP0217807B1 (de) | 1990-04-04 |
DE3505481A1 (de) | 1986-08-28 |
JPS62501858A (ja) | 1987-07-23 |
US4707332A (en) | 1987-11-17 |
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