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

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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
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EP
European Patent Office
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hours
product
type
degrees
temperatures
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Expired
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EP82420168A
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German (de)
English (en)
French (fr)
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EP0081441A1 (fr
Inventor
Roger Develay
Marc Anagnostidis
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Metallurgigue de Gerzat
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Metallurgigue de Gerzat
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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
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    • 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.)

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  • 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)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Manufacture And Refinement Of Metals (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 (ru) 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 (ru)
JP (1) JPS58113358A (ru)
AT (1) ATE16292T1 (ru)
CA (1) CA1206354A (ru)
DE (1) DE3267187D1 (ru)
DK (1) DK158317C (ru)
FR (1) FR2517702B1 (ru)
IE (1) IE54132B1 (ru)
NO (1) NO155629C (ru)
ZA (1) ZA828873B (ru)

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.
CA2159193C (en) * 1993-04-15 2006-10-31 Nigel John Henry Holroyd Method of making hollow bodies
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
WO2004090185A1 (en) 2003-04-10 2004-10-21 Corus Aluminium Walzprodukte Gmbh An al-zn-mg-cu alloy
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
RU2717434C2 (ru) * 2015-10-30 2020-03-23 Новелис Инк. Высокопрочные алюминиевые сплавы 7xxx и способы их получения
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
SE414193B (sv) * 1973-10-26 1980-07-14 Aluminum Co Of America Sett att termiskt behandla en artikel av en aluminiumlegering for att ge denna hog hallfasthet och god herdighet mot spenningskorrosion
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
JPS6127458B2 (ru) 1986-06-25
EP0081441A1 (fr) 1983-06-15
NO155629B (no) 1987-01-19
JPS58113358A (ja) 1983-07-06
DE3267187D1 (en) 1985-12-05
IE54132B1 (en) 1989-06-21
ZA828873B (en) 1983-09-28
CA1206354A (fr) 1986-06-24
DK158317B (da) 1990-04-30
NO824043L (no) 1983-06-06
ATE16292T1 (de) 1985-11-15
FR2517702B1 (ru) 1985-11-15
NO155629C (no) 1987-04-29
IE822870L (en) 1983-06-03
FR2517702A1 (ru) 1983-06-10
DK534982A (da) 1983-06-04
DK158317C (da) 1990-10-01

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