EP0296073B1 - Alliage métallique à grand paramètre de maille - Google Patents

Alliage métallique à grand paramètre de maille Download PDF

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Publication number
EP0296073B1
EP0296073B1 EP88420181A EP88420181A EP0296073B1 EP 0296073 B1 EP0296073 B1 EP 0296073B1 EP 88420181 A EP88420181 A EP 88420181A EP 88420181 A EP88420181 A EP 88420181A EP 0296073 B1 EP0296073 B1 EP 0296073B1
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EP
European Patent Office
Prior art keywords
group
alloy
total
weight
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.)
Expired - Lifetime
Application number
EP88420181A
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German (de)
English (en)
French (fr)
Other versions
EP0296073A1 (fr
Inventor
Bruno Dubost
Marc Audier
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.)
Pechiney SA
Original Assignee
Pechiney SA
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Publication date
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Publication of EP0296073A1 publication Critical patent/EP0296073A1/fr
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Anticipated expiration legal-status Critical
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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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent

Definitions

  • the invention relates to metal alloys characterized by a large lattice parameter (> 1 nm).
  • pseudo-crystals are not very stable over time (aging) and it was therefore advantageous to obtain crystallized metal alloys having large reticular distances; it is in fact known that monochromators made of organic crystals (or pseudocrystals) have a low reflecting power and a poor resolution.
  • the metallic crystals whose composition is represented by the weight formula (Al, Zn, Cu) x Li 1-x with 0.88 ⁇ x ⁇ 0.92, the group Al, Zn, Cu may be partially substituted up to 50% by weight in total with Ag, Ga and / or Au and the Li may be partially substituted by one or more elements from the group Mg, Na, K, Ca up to 10% by weight in total, the other elements (impurities) being held ⁇ 1% each and ⁇ 5% in total, respond to this problem.
  • the group Al, Zn, Cu may be partially substituted up to 50% by weight in total with Ag, Ga and / or Au and the Li may be partially substituted by one or more elements from the group Mg, Na, K, Ca up to 10% by weight in total, the other elements (impurities) being held ⁇ 1% each and ⁇ 5% in total, respond to this problem.
  • compositions are preferably the following (% by weight):
  • a preferred composition is as follows:
  • the above elements can be replaced by one or more of their isotopes to improve their neutron scattering factor.
  • Monocrystals of such alloys can be obtained by a known method of preparing monocrystals, such as those of Bridgeman or Czochralski with the use (or not) of seeds and controlled temperature gradients. They are preferably produced by the method described in French patent application No. 86-15774 (FR-A-2 606 036). They are preferably annealed between 300 and 500 ° C for a period of a few hours to a few tens of hours to obtain a homogeneous structure and greater fineness of the diffraction lines.
  • FIG. 1 representing an X-ray diffraction diagram corresponding to Example 1 at small diffraction angles.
  • alloys belonging to the field according to the invention exhibited a very high volume fraction grade (> 80%) of large quadratic phase crystals coated with eutectic.
  • Annealing has the effect of completely absorbing most of the primary phases such as ⁇ -Al Li or constituents of the Al2LiMg eutectic.
  • the above ground alloys can constitute an internal standard for radiocrystallography.
  • the alloys according to the invention can therefore be used as internal standards in radiocrystallography (powder diagrams) or as monochromators with high reflecting power and good resolution in the methods of analysis by spectral dispersion of soft X-rays or slow neutrons.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Laminated Bodies (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Materials For Medical Uses (AREA)
  • Lubricants (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Battery Electrode And Active Subsutance (AREA)
EP88420181A 1987-06-05 1988-06-02 Alliage métallique à grand paramètre de maille Expired - Lifetime EP0296073B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708304 1987-06-05
FR8708304A FR2616158B1 (fr) 1987-06-05 1987-06-05 Alliage metallique a grand parametre de maille

Publications (2)

Publication Number Publication Date
EP0296073A1 EP0296073A1 (fr) 1988-12-21
EP0296073B1 true EP0296073B1 (fr) 1991-03-06

Family

ID=9352038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420181A Expired - Lifetime EP0296073B1 (fr) 1987-06-05 1988-06-02 Alliage métallique à grand paramètre de maille

Country Status (12)

Country Link
US (1) US4865665A (is)
EP (1) EP0296073B1 (is)
JP (1) JPS63312944A (is)
AT (1) ATE61418T1 (is)
DE (1) DE3861921D1 (is)
DK (1) DK299488A (is)
ES (1) ES2021459B3 (is)
FI (1) FI882614A (is)
FR (1) FR2616158B1 (is)
IS (1) IS1451B6 (is)
NO (1) NO168659C (is)
PT (1) PT87650B (is)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085830A (en) * 1989-03-24 1992-02-04 Comalco Aluminum Limited Process for making aluminum-lithium alloys of high toughness

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769484A (en) * 1952-06-30 1957-03-06 Willi Neu Zinc-aluminium alloy bearings and other workpieces exposed in use to sliding surfacefriction
GB926312A (en) * 1958-06-05 1963-05-15 Charles Topley Improvements in alloys
DE1083619B (de) * 1958-09-03 1960-06-15 Ver Deutsche Metallwerke Ag Verwendung einer zinkhaltigen Aluminiumlegierung als Korrosionsschutz fuer Stahloberflaechen
AT294439B (de) * 1969-12-03 1971-11-25 Voest Ag Aluminium-Zink-Legierung
EP0225226B1 (en) * 1985-10-25 1990-03-14 Kabushiki Kaisha Kobe Seiko Sho Aluminum alloy with superior thermal neutron absorptivity

Also Published As

Publication number Publication date
IS3354A7 (is) 1988-12-06
DK299488A (da) 1988-12-06
DE3861921D1 (de) 1991-04-11
FR2616158B1 (fr) 1990-10-19
FI882614A (fi) 1988-12-06
NO168659B (no) 1991-12-09
DK299488D0 (da) 1988-06-02
ES2021459B3 (es) 1991-11-01
NO882433L (no) 1988-12-06
NO882433D0 (no) 1988-06-02
NO168659C (no) 1992-03-18
US4865665A (en) 1989-09-12
PT87650A (pt) 1988-07-01
IS1451B6 (is) 1991-01-16
ATE61418T1 (de) 1991-03-15
JPS63312944A (ja) 1988-12-21
PT87650B (pt) 1992-09-30
FI882614A0 (fi) 1988-06-02
FR2616158A1 (fr) 1988-12-09
EP0296073A1 (fr) 1988-12-21

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