EP0229075A1 - High strength, ductile, low density aluminum alloys and process for making same. - Google Patents
High strength, ductile, low density aluminum alloys and process for making same.Info
- Publication number
- EP0229075A1 EP0229075A1 EP19860902711 EP86902711A EP0229075A1 EP 0229075 A1 EP0229075 A1 EP 0229075A1 EP 19860902711 EP19860902711 EP 19860902711 EP 86902711 A EP86902711 A EP 86902711A EP 0229075 A1 EP0229075 A1 EP 0229075A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- ranges
- aluminum
- composite
- low density
- 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
-
- 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 provides a process for making aluminium-lithium alloys containing a high density of substantially uniformly distributed shear resistant dispersoids which markedly improve the strength and ductility thereof.
- the low density aluminum-base alloys, of the invention consist essentially of the formula A lbal Zr a L b x c wherein X is at least one element selected from the group consisting of Cu, Mg, Si, Sc, Ti, U, Hf, Cr, V, Mn, Fe, Co and Ni, "a” ranges from about 0.15-2 wt%, "b” ranges from about 2.5-5 wt%, "c” . ranges from about 0-5 wt% and the balance is aluminum.
- the icrostructure of these alloys is characterized by the precipitation of composite Al ⁇ Li, Zr) phase in the aluminum matrix thereof. This microstructure is developed in accordance with the process of the present
- An alloy having a composition of Al-3.lLi-2Cu-lMg- 0.5Zr was developed for medium strength applications as shown in Table I.
- the alloy was solutionized at 540°C for 2.5 hrs., quenched into water at about 20°C and given conventional single aging and the claimed double aging treatments.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Procédé de fabrication d'alliages à base d'aluminium de résistance et ductilité élevées et de faible densité consistant essentiellement en 2,5 à 5 % en poids de Li, 0,15 à 2 % en poids de Zr, 0 à 5 % en poids d'au moins un élément sélectionné dans le groupe composé de Cu, Mg, Si, Sc, Ti, U, Hf, Be, Cr, V, Mn, Fe, Co, Ni, le solde étant de l'Al. L'alliage reçoit de multiples traitements de vieillissement après avoir été mis en solution. La microstructure de l'alliage est caractérisée par la précipitation d'une phase composite dans sa matrice d'aluminium.Process for manufacturing aluminum alloys of high strength and ductility and low density consisting essentially of 2.5 to 5% by weight of Li, 0.15 to 2% by weight of Zr, 0 to 5% by weight weight of at least one element selected from the group consisting of Cu, Mg, Si, Sc, Ti, U, Hf, Be, Cr, V, Mn, Fe, Co, Ni, the balance being Al. The alloy receives multiple aging treatments after being dissolved. The microstructure of the alloy is characterized by the precipitation of a composite phase in its aluminum matrix.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75243385A | 1985-07-08 | 1985-07-08 | |
US752433 | 1985-07-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0229075A1 true EP0229075A1 (en) | 1987-07-22 |
EP0229075B1 EP0229075B1 (en) | 1989-09-27 |
Family
ID=25026317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860902711 Expired EP0229075B1 (en) | 1985-07-08 | 1986-04-11 | High strength, ductile, low density aluminum alloys and process for making same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0229075B1 (en) |
JP (1) | JPS62502295A (en) |
AU (1) | AU578828B2 (en) |
CA (1) | CA1280342C (en) |
DE (1) | DE3665884D1 (en) |
WO (1) | WO1987000206A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5178695A (en) * | 1990-05-02 | 1993-01-12 | Allied-Signal Inc. | Strength enhancement of rapidly solidified aluminum-lithium through double aging |
AUPQ485399A0 (en) | 1999-12-23 | 2000-02-03 | Commonwealth Scientific And Industrial Research Organisation | Heat treatment of age-hardenable aluminium alloys |
AUPR360801A0 (en) * | 2001-03-08 | 2001-04-05 | Commonwealth Scientific And Industrial Research Organisation | Heat treatment of age-hardenable aluminium alloys utilising secondary precipitation |
DE102007056298A1 (en) * | 2007-11-22 | 2009-05-28 | Bayerische Motoren Werke Aktiengesellschaft | Piston for internal combustion engine, suitable for use in motor sports, is hardened by very rapid cooling of specified composition |
RU2513492C1 (en) * | 2013-02-21 | 2014-04-20 | Открытое акционерное общество "Всероссийский институт легких сплавов" (ОАО "ВИЛС") | Aluminium-based wrought nonhardenable alloy |
CN104694786B (en) * | 2015-01-29 | 2016-09-07 | 东莞劲胜精密组件股份有限公司 | A kind of aluminium alloy |
CN106756272A (en) * | 2016-12-14 | 2017-05-31 | 张家港市广大机械锻造有限公司 | A kind of alloy manufacturing methods for airborne vehicle housing |
WO2019152664A1 (en) * | 2018-01-31 | 2019-08-08 | Arconic Inc. | Corrosion resistant aluminum electrode alloy |
KR102494830B1 (en) * | 2022-03-22 | 2023-02-06 | 국방과학연구소 | Fabrication Method of Al-Li Alloy Using Multi-Stage Aging Treatment |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3366165D1 (en) * | 1982-02-26 | 1986-10-23 | Secr Defence Brit | Improvements in or relating to aluminium alloys |
CA1198656A (en) * | 1982-08-27 | 1985-12-31 | Roger Grimes | Light metal alloys |
JPS59118848A (en) * | 1982-12-27 | 1984-07-09 | Sumitomo Light Metal Ind Ltd | Structural aluminum alloy having improved electric resistance |
BR8401499A (en) * | 1983-03-31 | 1984-11-13 | Alcan Int Ltd | LINKS THE ALUMINUM BASE AND PROCESS TO PRODUCE A PLATE OR STRIP |
US4661172A (en) * | 1984-02-29 | 1987-04-28 | Allied Corporation | Low density aluminum alloys and method |
-
1986
- 1986-04-11 AU AU57749/86A patent/AU578828B2/en not_active Ceased
- 1986-04-11 EP EP19860902711 patent/EP0229075B1/en not_active Expired
- 1986-04-11 JP JP50235586A patent/JPS62502295A/en active Granted
- 1986-04-11 DE DE8686902711T patent/DE3665884D1/en not_active Expired
- 1986-04-11 WO PCT/US1986/000757 patent/WO1987000206A1/en active IP Right Grant
- 1986-07-08 CA CA000513291A patent/CA1280342C/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO8700206A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0229075B1 (en) | 1989-09-27 |
WO1987000206A1 (en) | 1987-01-15 |
AU5774986A (en) | 1987-01-30 |
DE3665884D1 (en) | 1989-11-02 |
CA1280342C (en) | 1991-02-19 |
JPS648066B2 (en) | 1989-02-13 |
JPS62502295A (en) | 1987-09-03 |
AU578828B2 (en) | 1988-11-03 |
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