EP0143727B1 - Legierungen auf Aluminiumbasis mit guter Härteerhaltung bei Hochtemperatur - Google Patents

Legierungen auf Aluminiumbasis mit guter Härteerhaltung bei Hochtemperatur Download PDF

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Publication number
EP0143727B1
EP0143727B1 EP84420198A EP84420198A EP0143727B1 EP 0143727 B1 EP0143727 B1 EP 0143727B1 EP 84420198 A EP84420198 A EP 84420198A EP 84420198 A EP84420198 A EP 84420198A EP 0143727 B1 EP0143727 B1 EP 0143727B1
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EP
European Patent Office
Prior art keywords
alloy according
solidification
alloy
weight
alloys
Prior art date
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Expired
Application number
EP84420198A
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English (en)
French (fr)
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EP0143727A3 (en
EP0143727A2 (de
Inventor
Salim Dermarkar
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.)
Cegedur Societe de Transformation de lAluminium Pechiney SA
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
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.)
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Publication date
Application filed by Cegedur Societe de Transformation de lAluminium Pechiney SA filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Publication of EP0143727A2 publication Critical patent/EP0143727A2/de
Publication of EP0143727A3 publication Critical patent/EP0143727A3/fr
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • C22C45/08—Amorphous alloys with aluminium as the major constituent

Definitions

  • the invention relates to Al-based alloys with high heat stability.
  • Alloys based on AI are known which exhibit good hot stability, in particular those described in French patent application FR 2 190 553 or US patent 4 347 076.
  • alloys based are described. of AI containing from 3 to 15% (by weight) of transition element belonging to the group Ti, V, Cr, Mn, Co, Ni, Fe, Zr, Nb and Mo. However, these only keep a hardness lower than 190 Vickers units, for durations of 1 week at temperatures lower than or equal to 400 ° C.
  • the invention relates to Al alloys whose heat stability is significantly higher.
  • the alloys according to the invention contain, in addition to the Al and the inevitable processing impurities, at least 5 to 20% (by weight) of Fe, and more than 0.05% Ni and 0.5% Mo.
  • the sum of the Ni + Mo contents must not exceed 8%, so as not to exceed the retention capacity of the alloying elements during rapid solidification (> 10 4 ° C / second) of the alloy.
  • the% Mo /% Ni ratio must be greater than 0.5 to obtain the desired hot stability. This stability is very much greater than that which a separate addition of Ni or Mo could confer; this point will be illustrated by examples.
  • One (or more) other refractory element (s) from the group Mn, Si, Ti, Hf, Zr, Nb, V can be added to this basic composition, for an overall content of less than 5%. weight.
  • the alloys of preferred compositions individually or in combination from 5 to 10% Fe, a ratio 0.5 ⁇ - K 2 and / or an Ni content of Mo ⁇ 1%.
  • the alloys were produced in the form of a ribbon 1 to 5 min ⁇ 20 to 40 ⁇ m, by rapid solidification on a steel casting wheel, driven at a tangential speed of 45 m / second.
  • alloys 2, 7, 8 which are outside the scope of the invention have poor heat stability, relative to the other alloys according to the invention.
  • a minimum quantity of nickel (and of Mo) is essential in order to obtain the good heat resistance properties: the preferred compositions (4, 5, 6 ) have optimal hot characteristics.
  • Table III gives the characteristics of hot resistance for longer-lasting holdings of the alloys (4 to 6) at 400 ° C.
  • alloy 4 has precipitation in semi-coherent platelets while in the alloy 8, the precipitation already consists of incoherent globules of phase type Al 9 FeNi.
  • the thermal stability of alloy 4 is associated with the slower decomposition kinetics observed on this alloy.
  • the alloys according to the invention may be used for parts of turbomachines operating at temperatures below 350 ° C for fairly long periods or operating at higher temperature for fairly short periods (missile bodies).

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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)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Laminated Bodies (AREA)

Claims (10)

1. Legierung auf AI-Basisi, dadurch gekennzeichnet, dass sie (in Gewichts-%)
Figure imgb0005
und gegebenenfalls bis zu insgesamt 5% eines (oder mehrerer) Elements (Elemente) der Gruppe Si, Mn, Ti, Hf, Zr, V, Nb, Rest AI und unvermeidliche Verunreinigungen enthält.
2. Legierung nach dem Anspruch 1, dadurch gekennzeichnet,
dass 5 ≤ Fe ≤ 10.
3. Legierung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet,
dass Mo/Ni ≤ 2.
4. Legierung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
dass Mo ≥ 1.
5. Legierung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Gefüge im rohen Erstarrungszustand eine übersättigte feste Lösung auf AI-Basis ist.
6. Legierung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie im rohen Erstarrungszustand ausser der festen Lösung eine kristalline Phase aufweist, deren aufgrund von Beugungsbildern bestimmten Zwischengitterabstände sind:
0,38-0,203bis0,211 0,147 -0,125 -0,107 nm.
7. Legierung nach dem Anspruch 6, dadurch gekennzeichnet, dass die kristalline Phase wenigstens 1 Gewichts-% Ni und 1 Gewichts-% Mo enthält.
8. Legierung nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Grösse der Körner der kristallinen Phase in der Grössenordnung von 1 nm ist.
9. Legierung nach dem Anspruch 8, dadurch gekennzeichnet, dass die mikrokristalline Phase ein fadenförmiges Netz bildet, dessen Breite im Mikroschliffbild im Bereich von 5 bis 50 nm liegt.
10. Verfahren zum Erhalten einer Legierung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Erstarrungsgeschwindigkeit über 104 °C/Sekunde ist.
EP84420198A 1983-11-29 1984-11-27 Legierungen auf Aluminiumbasis mit guter Härteerhaltung bei Hochtemperatur Expired EP0143727B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8319434A FR2555610B1 (fr) 1983-11-29 1983-11-29 Alliages a base d'aluminium presentant une grande stabilite a chaud
FR8319434 1983-11-29

Publications (3)

Publication Number Publication Date
EP0143727A2 EP0143727A2 (de) 1985-06-05
EP0143727A3 EP0143727A3 (en) 1985-07-10
EP0143727B1 true EP0143727B1 (de) 1987-06-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84420198A Expired EP0143727B1 (de) 1983-11-29 1984-11-27 Legierungen auf Aluminiumbasis mit guter Härteerhaltung bei Hochtemperatur

Country Status (8)

Country Link
EP (1) EP0143727B1 (de)
JP (1) JPS60215730A (de)
KR (1) KR850004122A (de)
DE (1) DE3464387D1 (de)
ES (1) ES538034A0 (de)
FR (1) FR2555610B1 (de)
IL (1) IL73645A (de)
NO (1) NO162426C (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146352B (en) * 1982-09-03 1986-09-03 Alcan Int Ltd Aluminium alloys
JPS60234936A (ja) * 1984-05-09 1985-11-21 Sumitomo Light Metal Ind Ltd 高温強度に優れたアルミニウム合金成形材
JPS6148551A (ja) * 1984-08-13 1986-03-10 Sumitomo Light Metal Ind Ltd 高温強度に優れたアルミニウム合金成形材
FR2584095A1 (fr) * 1985-06-28 1987-01-02 Cegedur Alliages d'al a hautes teneurs en li et si et un procede de fabrication
EP0218035A1 (de) * 1985-10-02 1987-04-15 Allied Corporation Rasch erstarrte Silizium enthaltende legierungen auf Aluminiumbasis für Hochtemperaturanwendungen
US4878967A (en) * 1985-10-02 1989-11-07 Allied-Signal Inc. Rapidly solidified aluminum based, silicon containing alloys for elevated temperature applications
US4729790A (en) * 1987-03-30 1988-03-08 Allied Corporation Rapidly solidified aluminum based alloys containing silicon for elevated temperature applications
JPH01149936A (ja) * 1987-12-04 1989-06-13 Honda Motor Co Ltd 粉末冶金用耐熱Ａｌ合金

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1195247A (fr) * 1956-12-14 1959-11-16 Kaiser Aluminium Chem Corp Alliages d'aluminium
GB1192030A (en) * 1967-12-30 1970-05-13 Ti Group Services Ltd Aluminium Alloys
US4347076A (en) * 1980-10-03 1982-08-31 Marko Materials, Inc. Aluminum-transition metal alloys made using rapidly solidified powers and method
FR2529909B1 (fr) * 1982-07-06 1986-12-12 Centre Nat Rech Scient Alliages amorphes ou microcristallins a base d'aluminium

Also Published As

Publication number Publication date
FR2555610B1 (fr) 1987-10-16
ES8602149A1 (es) 1985-11-01
NO844743L (no) 1985-05-30
IL73645A (en) 1987-10-30
IL73645A0 (en) 1985-02-28
NO162426C (no) 1989-12-27
KR850004122A (ko) 1985-07-01
JPS60215730A (ja) 1985-10-29
EP0143727A3 (en) 1985-07-10
FR2555610A1 (fr) 1985-05-31
NO162426B (no) 1989-09-18
ES538034A0 (es) 1985-11-01
EP0143727A2 (de) 1985-06-05
DE3464387D1 (en) 1987-07-30

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