EP0540054B1 - Hochfeste Legierung auf Aluminumbasis mit hoher Zähigkeit - Google Patents

Hochfeste Legierung auf Aluminumbasis mit hoher Zähigkeit Download PDF

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Publication number
EP0540054B1
EP0540054B1 EP19920118759 EP92118759A EP0540054B1 EP 0540054 B1 EP0540054 B1 EP 0540054B1 EP 19920118759 EP19920118759 EP 19920118759 EP 92118759 A EP92118759 A EP 92118759A EP 0540054 B1 EP0540054 B1 EP 0540054B1
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EP
European Patent Office
Prior art keywords
aluminum
alloy
group
matrix
strength
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EP19920118759
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English (en)
French (fr)
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EP0540054A1 (de
Inventor
Kazuhiko Kita
Hidenobu Nagahama
Takeshi Terabayashi
Makoto Kawanishi
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YKK Corp
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YKK Corp
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    • 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
    • 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

Definitions

  • the present invention relates to an aluminum-based alloy having a high strength and an excellent toughness which is produced by a quench solidification process.
  • An aluminum-based alloy having a high strength and a high heat resistance has heretofore been produced by a liquid quenching process as disclosed in Japanese Patent Laid-Open No. 275732/1989.
  • the aluminum-based alloy obtained by the liquid quenching process is an amorphous or microcrystalline alloy and is an excellent alloy having a high strength, a high heat resistance and a high corrosion resistance.
  • head resistant aluminum-based alloys are disclosed in EP-A-445684 and EP-A-339676, corresponding to JP-A-1275732.
  • the above conventional aluminum-based alloy is an excellent alloy which exhibits a high strength, a high heat resistance and a high corrosion resistance and is also excellent in workability in spite of its being a high-strength material, it still admits of further improvement in toughness when used as a material required to have a high toughness.
  • an alloy produced by a quench solidification process involves the problems that it is susceptible to thermal influence at the time of working and that it suddenly loses its excellent characteristics, such as a high strength, owing to the thermal influence.
  • the above-mentioned aluminum-based alloy is not the exception to the aforestated general rule and still leaves some room for further improvement in this respect.
  • an object of the present invention is to provide a high-strength and high-toughness aluminum-based alloy capable of maintaining its excellent characteristics provided by a quench solidification process, as well as a high strength and a high toughness, even if it is subjected to the thermal influence when working.
  • the present invention provides a high-strength and high-toughness aluminum-based alloy having a composition represented by the general formula Al a Ni b X c M d
  • the single figure is a schematic illustration of one example of an apparatus well suited for the production of the alloy according to the present invention.
  • the Ni element has a superior ability to form an amorphous phase or a supersaturated solid solution and serves for the refinement of the crystalline structure of the alloy, including the intermetallic compounds, and for the production of a high-strength alloy by a quench solidification process.
  • the content of Ni in the above alloy is limited to 5 to 10 atomic % because a content thereof less than 5 atomic % leads to an insufficient strength of the alloy obtained by rapid quenching, whereas that exceeding 10 atomic % results in a sudden decrease in the toughness (ductility) of the alloy thus obtained.
  • the element X is at least one element selected from the group consisting of La, Ce, Mm, Ti and Zr and serves to enhance the thermal stability of the amorphous structure, supersaturated solid solution or microcrystalline structure as well as the strength of the alloy.
  • the content of the element X in the above alloy is limited to 0.5 to 3 atomic % because a content thereof less than 0.5 atomic % leads to insufficiency of the above-mentioned effect, whereas that exceeding 3 atomic % results in a sudden decrease in the toughness (ductility) of the alloy thus obtained.
  • the element M is at least one element selected from the group consisting of Y, Nb, Hf, Ta and W and serves to enhance the thermal stability of the rapidly solidified structure, such as the amorphous structure, supersaturated solid solution or microcrystalline structure, and to maintain the above-described characteristics, even when the alloy is subjected to thermal influence.
  • the addition of the element M in a slight amount to the alloy does not exert any adverse influence on the excellent toughness (ductility) of the Al-Ni-X-based alloy.
  • the content of the element M in the above alloy is limited to 0.1 to 2 atomic % because a content thereof less than 0.1 atomic % leads to insufficiency of the above-mentioned effect, whereas that exceeding 2 atomic % results in the action of inhibiting the refinement of the aforestated rapidly solidified structure and exerts a bad influence on the toughness (ductility) of the alloy thus obtained.
  • the aluminum-based alloy according to the present invention is obtained by rapidly solidifying the melt of the alloy having the aforestated composition thorough a liquid quenching process.
  • the cooling rate of 10 4 to 10 6 K/sec in this case is particularly effective.
  • a molten alloy 3 having a given composition was prepared with a high-frequency melting furnace, introduced into a quartz tube 1 having a small hole 5 of 0.5 mm in diameter at the end thereof as shown in the figure, and melted by heating. Thereafter, the quartz tube 1 was placed immediately above a copper roll 2. Then the molten alloy 3 in the quartz tube 1 was ejected onto the roll 2 from the small hole 5 of the quartz tube 1 at a high speed of the roll 2 of 3000 to 5000 rpm under a pressure of argon gas of 0.7 kg/cm 2 and brought into contact with the surface of the roll 2 to obtain a rapidly solidified thin ribbon alloy 4.
  • the aluminum-based alloy according to the present invention has a very high strength at both room temperature and an elevated temperature, that is, a tensile strength of 850 MPa or higher at room temperature and that of 500 MPa or higher in the 473 K atmosphere without a great decrease in the strength at an elevated temperature; besides, it has an elongation of 1% or greater at room temperature, rendering itself a material excellent in toughness.
  • the aluminum-based alloy according to the present invention possesses a high strength and a high toughness and can maintain the excellent characteristics provided by quench solidification, even when subjected to thermal influence at the time of working.
  • it can provide an alloy material having a high specific strength by virtue of minimized amounts of elements having a high specific gravity to be added to the alloy.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Powder Metallurgy (AREA)

Claims (1)

  1. Hochfeste, durch rasches Erstarren erhaltene Legierung auf Aluminiumgrundlage mit einer hohen Zähigkeit und einer durch die folgende allgemeine Formel dargestellten Zusammensetzung:

            AlaNibXcMd,

    wobei X mindestens ein aus der La, Ce, Mm (Mischmetall), Ti und Zr bestehenden Gruppe ausgewähltes Element ist,
    M mindestens ein aus der aus Y, Nb, Hf, Ta und W bestehenden Gruppe ausgewähltes Element ist und
    a, b, c und d Angaben in Atomprozent sind, für die gilt: 85 ≤ a ≤ 94,4; 5 ≤ b ≤ 10; 0,5 ≤ c ≤ 3 und 0,1 ≤ d ≤ 2,
    mit Ausnahme von Legierungen auf Aluminiumgrundlage mit einer gemäß der allgemeinen Formel AlaMbLnc gebildeten Zusammensetzung, wobei:
    M Ni darstellt,
    Ln mindestens ein aus der aus Y, den Elementen der seltenen Erden und Mm (Mischmetall), was ein Komposit aus Elementen der seltenen Erden ist, bestehenden Gruppe ausgewähltes Element ist und
    a, b und c Angaben in Atomprozent sind, für die gilt: 75 ≤ a ≤ 97; 0,5 ≤ b ≤ 15 und 0,5 ≤ c ≤ 10,
    wobei die Legierung aus einer Aluminiummatrix oder einer Matrix aus einer übersättigten Aluminiumfeststofflösung mit einer mittleren Kristallkorngröße von 0,1 - 80 µm gebildet ist und darin eine gleichmäßige Verteilung von Teilchen einer metastabilen oder stabilen Phase enthält, die aus intermetallischen Verbindungen gebildet sind, welche zwischen dem Wirtelement (Matrixelement) und den oben angegebenen legierenden Elementen und/oder zwischen den legierenden Elementen ausgebildet sind, wobei die intermetallischen Verbindungen eine mittlere Teilchengröße von 10 - 500 nm aufweisen;
    und mit Ausnahme von Legierungen auf Aluminiumgrundlage mit einer gemäß der allgemeinen Formel AlaMbXdLnc gebildeten Zusammensetzung, wobei:
    M Ni darstellt,
    X mindestens ein aus der aus Ti und Zr bestehenden Gruppe ausgewähltes Element ist,
    Ln mindestens ein aus der aus Y, den Elementen der seltenen Erden und Mm (Mischmetall), was ein Komposit aus Elementen der seltenen Erden ist, bestehenden Gruppe ausgewähltes Element ist und
    a, b, c und d Angaben in Atomprozent sind, für die gilt:
    75 ≤ a ≤ 97; 0,5 ≤ b ≤ 15; 0,5 ≤ c ≤ 10 und 0,5 ≤ d ≤ 3,5,
    wobei die Legierung aus einer Aluminiummatrix oder einer Matrix aus einer übersättigten Aluminiumfeststofflösung mit einer mittleren Kristallkorngröße von 0,1 - 80 µm gebildet ist und darin eine gleichmäßige Verteilung von Teilchen einer metastabilen oder stabilen Phase enthält, die aus intermetallischen Verbindungen gebildet sind, welche zwischen den Wirtelementen (Matrixelement) und den oben angegebenen legierenden Elementen und/oder zwischen den legierenden Elementen ausgebildet sind, wobei die intermetallischen Verbindungen eine mittlere Teilchengröße von 10 - 500 nm besitzen.
EP19920118759 1991-11-01 1992-11-02 Hochfeste Legierung auf Aluminumbasis mit hoher Zähigkeit Expired - Lifetime EP0540054B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP287918/91 1991-11-01
JP28791891A JPH05125499A (ja) 1991-11-01 1991-11-01 高強度高靭性アルミニウム基合金

Publications (2)

Publication Number Publication Date
EP0540054A1 EP0540054A1 (de) 1993-05-05
EP0540054B1 true EP0540054B1 (de) 1997-06-11

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EP19920118759 Expired - Lifetime EP0540054B1 (de) 1991-11-01 1992-11-02 Hochfeste Legierung auf Aluminumbasis mit hoher Zähigkeit

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EP (1) EP0540054B1 (de)
JP (1) JPH05125499A (de)
DE (1) DE69220324T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2941571B2 (ja) * 1992-08-05 1999-08-25 ヤマハ 株式会社 高強度耐食性アルミニウム基合金およびその製造方法
JP4080013B2 (ja) * 1996-09-09 2008-04-23 住友電気工業株式会社 高強度高靱性アルミニウム合金およびその製造方法
EP1007308B1 (de) * 1997-02-24 2003-11-12 Superior Micropowders LLC Aerosolverfahren und -gerät, teilchenförmige produkte, und daraus hergestellte elektronische geräte
CN107829048B (zh) * 2017-11-29 2020-06-16 河北工业大学 一种Al-Ni-Y-Ce铝基非晶态合金及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447831A (en) * 1987-08-12 1989-02-22 Takeshi Masumoto High strength and heat resistant aluminum-based alloy and its production
JP2753739B2 (ja) * 1989-08-31 1998-05-20 健 増本 アルミニウム基合金箔又はアルミニウム基合金細線の製造方法
JP2538692B2 (ja) * 1990-03-06 1996-09-25 ワイケイケイ株式会社 高力、耐熱性アルミニウム基合金
EP0475101B1 (de) * 1990-08-14 1995-12-13 Ykk Corporation Hochfeste Legierungen auf Aluminiumbasis

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DE69220324T2 (de) 1998-01-22
EP0540054A1 (de) 1993-05-05
DE69220324D1 (de) 1997-07-17
JPH05125499A (ja) 1993-05-21

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