EP0081441B1 - Méthode pour l'obtention de produits filés en alliages type Al-Zn-Mg-Cu à haute résistance et à tenacité sens travers améliorée - Google Patents

Méthode pour l'obtention de produits filés en alliages type Al-Zn-Mg-Cu à haute résistance et à tenacité sens travers améliorée Download PDF

Info

Publication number
EP0081441B1
EP0081441B1 EP82420168A EP82420168A EP0081441B1 EP 0081441 B1 EP0081441 B1 EP 0081441B1 EP 82420168 A EP82420168 A EP 82420168A EP 82420168 A EP82420168 A EP 82420168A EP 0081441 B1 EP0081441 B1 EP 0081441B1
Authority
EP
European Patent Office
Prior art keywords
hours
product
type
degrees
temperatures
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
Application number
EP82420168A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081441A1 (fr
Inventor
Roger Develay
Marc Anagnostidis
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.)
Metallurgigue de Gerzat
Original Assignee
Metallurgigue de Gerzat
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9264805&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0081441(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metallurgigue de Gerzat filed Critical Metallurgigue de Gerzat
Priority to AT82420168T priority Critical patent/ATE16292T1/de
Publication of EP0081441A1 publication Critical patent/EP0081441A1/fr
Application granted granted Critical
Publication of EP0081441B1 publication Critical patent/EP0081441B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent

Definitions

  • the present invention relates to a process for obtaining high-strength Al-type AI-Zn-Mg-Cu spun products of Al alloy which, in the treated state (type T6 or T7), have high ductility and toughness. particularly in the cross direction, as well as good resistance to corrosion under stress.
  • High strength spun products are already known which have high ductility and toughness characteristics in the long direction (see for example those described in French patent application 2 457 908).
  • Alloy A semi-continuously cast in the form of 170 mm diameter billets, underwent a homogenization treatment for 24 hours at 460 ° C., was spun by reverse spinning at 400 ° C. ⁇ 10 ° C. in the form of cases of dimensions 0107 x 141 mm. These cases were hot drawn at 380 ° C ⁇ 20 ° C with the dimensions 0105.5 x 132 mm, machined externally by turning to a diameter of 127.2 mm, pickled, dissolved in 460 ° C, quenched with cold water, cold drawn on fresh quenching with a work hardening rate (S - s / s) of 4% and returned 30 h at 120 ° C.
  • S - s / s work hardening rate
  • batch B2 having undergone hardening after quenching and before tempering situated in the preferred area of the invention ( ⁇ 1.5% and ⁇ 5%) has a set of traction characteristics more efficient than that of batch B1 for which the work hardening was 10%.
  • batch B3 whose homogenization conditions for dissolution, work hardening between quenching and tempering are located in the preferred field of the invention, appears to be particularly effective, in particular with regard to elongations at break in the cross direction of the bottom of the case which are more than four times higher than those of the control batch A.
  • batches B4x show that for a treatment of the T7 type with two bearings, it is possible to confer on the alloys in accordance with the invention a resistance to corrosion under particularly high stress.
  • alloy C outside the invention, constituting the control.
  • Each of the alloys was homogenized for 24 h at 475 ° C, peeled to a diameter of 170 mm and transformed by reverse hot spinning at the temperature of 350-400 ° C in the form of a bar with a diameter of 50 mm.
  • the bars were dissolved for 1 hour at 478 ° C, soaked in cold water and returned 24 hours at 120 ° C.
  • test specimen is shown in Figure 2.
  • a fatigue crack is initiated on the test specimen defined above, taken in the LR direction, from the body, under the conditions of standard ASTM E399 (0.45 ⁇ a / W ⁇ 0.55, propagation in fatigue at least 1.3 mm, load less than 60% of the Pq).
  • the test piece cracked in fatigue, is then subjected to a slow bending test at three points.
  • the curve effort is recorded as a function of the speed of unwinding of the paper from the recorder (constant speed).
  • the K factor was calculated according to the formula given by standard ASTM E399 (Bend Specimen) which is: (in MPa ⁇ m)
  • the part of the break that corresponds to the initial crack generated by fatigue is then transferred onto transparent paper.
  • the lengths of the cracks are then measured at a quarter, half and three quarters of the thickness of the test piece.
  • the value of a used in the formula is the average value of the three measurements. (Siehe Tabelle Erasmus 7 f.)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Extrusion Of Metal (AREA)
  • Conductive Materials (AREA)
EP82420168A 1981-12-03 1982-12-01 Méthode pour l'obtention de produits filés en alliages type Al-Zn-Mg-Cu à haute résistance et à tenacité sens travers améliorée Expired EP0081441B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82420168T ATE16292T1 (de) 1981-12-03 1982-12-01 Verfahren zur herstellung von extrudierten werkstuecken aus hochfesten legierungen des typs al-zn-mg-cu, mit zaehigkeit in querrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122969A FR2517702B1 (it) 1981-12-03 1981-12-03
FR8122969 1981-12-03

Publications (2)

Publication Number Publication Date
EP0081441A1 EP0081441A1 (fr) 1983-06-15
EP0081441B1 true EP0081441B1 (fr) 1985-10-30

Family

ID=9264805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420168A Expired EP0081441B1 (fr) 1981-12-03 1982-12-01 Méthode pour l'obtention de produits filés en alliages type Al-Zn-Mg-Cu à haute résistance et à tenacité sens travers améliorée

Country Status (10)

Country Link
EP (1) EP0081441B1 (it)
JP (1) JPS58113358A (it)
AT (1) ATE16292T1 (it)
CA (1) CA1206354A (it)
DE (1) DE3267187D1 (it)
DK (1) DK158317C (it)
FR (1) FR2517702B1 (it)
IE (1) IE54132B1 (it)
NO (1) NO155629C (it)
ZA (1) ZA828873B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8002913B2 (en) 2006-07-07 2011-08-23 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof
US8608876B2 (en) 2006-07-07 2013-12-17 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof
US10301710B2 (en) 2005-01-19 2019-05-28 Otto Fuchs Kg Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863528A (en) * 1973-10-26 1989-09-05 Aluminum Company Of America Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same
JPS6263641A (ja) * 1985-09-14 1987-03-20 Showa Alum Corp 低サイクル疲労特性に優れた高強度アルミニウム合金押出材
FR2601967B1 (fr) * 1986-07-24 1992-04-03 Cerzat Ste Metallurg Alliage a base d'al pour corps creux sous pression.
US5221377A (en) * 1987-09-21 1993-06-22 Aluminum Company Of America Aluminum alloy product having improved combinations of properties
US4861391A (en) * 1987-12-14 1989-08-29 Aluminum Company Of America Aluminum alloy two-step aging method and article
FR2645546B1 (fr) * 1989-04-05 1994-03-25 Pechiney Recherche Alliage a base d'al a haut module et a resistance mecanique elevee et procede d'obtention
JP2982172B2 (ja) * 1989-04-14 1999-11-22 日本鋼管株式会社 高力アルミニウム合金材の熱処理方法
FR2676462B1 (fr) * 1991-05-14 1995-01-13 Pechiney Rhenalu Procede pour ameliorer l'isotropie travers des produits epais en alliages d'al.
US5284327A (en) * 1992-04-29 1994-02-08 Aluminum Company Of America Extrusion quenching apparatus and related method
FR2695942B1 (fr) * 1992-09-22 1994-11-18 Gerzat Metallurg Alliage d'aluminium pour corps creux sous pression.
KR100341541B1 (ko) * 1993-04-15 2002-11-29 엘지엘 1996 리미티드 중공본체의 제조방법
FR2716896B1 (fr) * 1994-03-02 1996-04-26 Pechiney Recherche Alliage 7000 à haute résistance mécanique et procédé d'obtention.
JPH09151714A (ja) * 1995-12-04 1997-06-10 Fuji Oozx Inc 内燃機関用アルミニウム合金製スプリングリテーナ
US6322647B1 (en) * 1998-10-09 2001-11-27 Reynolds Metals Company Methods of improving hot working productivity and corrosion resistance in AA7000 series aluminum alloys and products therefrom
IL156386A0 (en) 2000-12-21 2004-01-04 Alcoa Inc Aluminum alloy products and artificial aging method
FR2838136B1 (fr) * 2002-04-05 2005-01-28 Pechiney Rhenalu PRODUITS EN ALLIAGE A1-Zn-Mg-Cu A COMPROMIS CARACTERISTIQUES STATISTIQUES/TOLERANCE AUX DOMMAGES AMELIORE
FR2838135B1 (fr) 2002-04-05 2005-01-28 Pechiney Rhenalu PRODUITS CORROYES EN ALLIAGES A1-Zn-Mg-Cu A TRES HAUTES CARACTERISTIQUES MECANIQUES, ET ELEMENTS DE STRUCTURE D'AERONEF
US20050006010A1 (en) * 2002-06-24 2005-01-13 Rinze Benedictus Method for producing a high strength Al-Zn-Mg-Cu alloy
DE112004000603B4 (de) 2003-04-10 2022-11-17 Novelis Koblenz Gmbh AI-Zn-Mg-Cu-Legierung
US7883591B2 (en) 2004-10-05 2011-02-08 Aleris Aluminum Koblenz Gmbh High-strength, high toughness Al-Zn alloy product and method for producing such product
JP5083816B2 (ja) * 2007-11-08 2012-11-28 住友軽金属工業株式会社 温間加工性に優れたＡｌ−Ｚｎ−Ｍｇ−Ｃｕ合金押出材およびその製造方法ならびに該押出材を用いた温間加工材
PL3265595T3 (pl) * 2015-10-30 2019-07-31 Novelis, Inc. Stopy aluminium 7xxx o dużej wytrzymałości i sposoby ich wytwarzania
CN109402539B (zh) * 2018-11-29 2020-02-11 四川航天长征装备制造有限公司 一种提高铝合金棒材径向延伸率的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881966A (en) * 1971-03-04 1975-05-06 Aluminum Co Of America Method for making aluminum alloy product
FR2222450A1 (en) * 1973-03-21 1974-10-18 Aluminum Co Of America Aluminium alloy forgings - from material cast heat treated and worked under particular conditions to obtain improved mechanical properties
CA1047901A (en) * 1973-10-26 1979-02-06 Melvin H. Brown Rapid high temperature aging of al-zn-mg-cu alloys
CA1045528A (en) * 1973-10-26 1979-01-02 Melvin H. Brown Producing combined high strength and high corrosion resistance in al-zn-mg-cu alloys
US3945861A (en) * 1975-04-21 1976-03-23 Aluminum Company Of America High strength automobile bumper alloy
FR2457908A1 (fr) * 1979-06-01 1980-12-26 Gerzat Metallurg Procede de fabrication de corps creux en alliage d'aluminium et produits ainsi obtenus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10301710B2 (en) 2005-01-19 2019-05-28 Otto Fuchs Kg Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product
US8002913B2 (en) 2006-07-07 2011-08-23 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof
US8088234B2 (en) 2006-07-07 2012-01-03 Aleris Aluminum Koblenz Gmbh AA2000-series aluminum alloy products and a method of manufacturing thereof
US8608876B2 (en) 2006-07-07 2013-12-17 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof

Also Published As

Publication number Publication date
ATE16292T1 (de) 1985-11-15
FR2517702B1 (it) 1985-11-15
DK158317B (da) 1990-04-30
DE3267187D1 (en) 1985-12-05
IE822870L (en) 1983-06-03
IE54132B1 (en) 1989-06-21
NO155629C (no) 1987-04-29
CA1206354A (fr) 1986-06-24
DK158317C (da) 1990-10-01
JPS58113358A (ja) 1983-07-06
NO155629B (no) 1987-01-19
NO824043L (no) 1983-06-06
ZA828873B (en) 1983-09-28
JPS6127458B2 (it) 1986-06-25
EP0081441A1 (fr) 1983-06-15
DK534982A (da) 1983-06-04
FR2517702A1 (it) 1983-06-10

Similar Documents

Publication Publication Date Title
EP0081441B1 (fr) Méthode pour l'obtention de produits filés en alliages type Al-Zn-Mg-Cu à haute résistance et à tenacité sens travers améliorée
EP0162096B1 (fr) Alliages a base d'aluminium contenant du lithium, du magnesium et du cuivre
EP1114877A1 (fr) Element de structure d'avion en alliage Al-Cu-Mg
EP0876514B1 (fr) PRODUITS EPAIS EN ALLIAGE A1ZnMgCu A PROPRIETES AMELIOREES
CA2907854A1 (fr) Toles minces en alliage d'aluminium-cuivre-lithium pour la fabrication de fuselages d'avion
WO2003080884A2 (fr) Produits en alliages al-mg pour construction soudee
CA2961712A1 (fr) Toles isotropes en alliage d'aluminium-cuivre-lithium pour la fabrication de fuselages d'avion
EP2981631A1 (fr) Tôles en alliage d'aluminium-cuivre-lithium pour la fabrication de fuselages d'avion
CA2942426A1 (fr) Produit file en alliage 6xxx apte au decolletage et presentant une faible rugosite apres anodisation
EP0008996A1 (fr) Procédé de traitement thermique des alliages aluminium-cuivre-magnésium-silicium
EP1143027A1 (fr) Procédé de fabrication d'éléments de structure d'avions en alliage d'aluminium Al-Si-Mg
EP0227563B1 (fr) Procédé de désensibilisation à la corrosion exfoliante avec obtention simultanée d'une haute résistance mécanique et bonne tenue aux dommages des alliages d'aluminium contenant du lithium
EP0731185B1 (fr) Tôles en alliage Al-Cu-Mg à faible niveau de contraintes résiduelles
EP0282421B1 (fr) Produit en alliage d'Al comprenant du Li, résistant à la corrosion sous tension et procédé d'obtention
EP0645467A1 (fr) Procédé de désensibilisation à la corrosion intercristalline des alliages d'aluminium, séries 2000 et 6000 et produits correspondants
JP7469642B2 (ja) 高強度鋼線
EP0394155A1 (fr) Alliage Al-Li-Cu-Mg à bonne déformabilité à froid et bonne résistance aux dommages
JPH03294445A (ja) 成形加工性の良好な高力アルミニウム合金およびその製造法
EP0172776B1 (fr) Procédé d'amélioration de la forgeabilité d'un acier inoxydable austenoferritique
Mutlu et al. Effect of reduction ratio in flow forming process on microstructure and mechanical properties of a 6082 Al alloy
JP7119153B1 (ja) 高強度アルミニウム合金押出材およびその製造方法
FR2625227A1 (fr) Acier allie pour boulonnerie a controle de serrage par ultrason
FR3132306A1 (fr) Tôle mince améliorée en alliage d’aluminium-cuivre-lithium
EP3802897A1 (fr) Toles minces en alliage d'aluminium-cuivre-lithium pour la fabrication de fuselages d'avion
FR2807448A1 (fr) Procede de fabrication d'elements de structure d'avions en alliage d'aluminium al-si-mg

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830629

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 16292

Country of ref document: AT

Date of ref document: 19851115

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3267187

Country of ref document: DE

Date of ref document: 19851205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19851231

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: SCHWEIZERISCHE ALUMINIUM AG

Effective date: 19860724

NLR1 Nl: opposition has been filed with the epo

Opponent name: SCHWEIZERISCHE ALUMINIUM AG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19861113

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19871231

Year of fee payment: 6

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19891026

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLR2 Nl: decision of opposition
BERE Be: lapsed

Owner name: SOC. METALLURGIQUE DE GERZAT

Effective date: 19891231

EUG Se: european patent has lapsed

Ref document number: 82420168.5

Effective date: 19900314