WO1996012829A1 - Procede de fabrication de produits en alliage alsimgcu a resistance amelioree a la corrosion intercristalline - Google Patents
Procede de fabrication de produits en alliage alsimgcu a resistance amelioree a la corrosion intercristalline Download PDFInfo
- Publication number
- WO1996012829A1 WO1996012829A1 PCT/FR1995/001412 FR9501412W WO9612829A1 WO 1996012829 A1 WO1996012829 A1 WO 1996012829A1 FR 9501412 W FR9501412 W FR 9501412W WO 9612829 A1 WO9612829 A1 WO 9612829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- produced
- products
- intercrystalline corrosion
- intercrystalline
- income
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 31
- 230000007797 corrosion Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 title description 39
- 239000000956 alloy Substances 0.000 title description 39
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 8
- 238000005496 tempering Methods 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000005482 strain hardening Methods 0.000 claims abstract description 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract 2
- 229910052709 silver Inorganic materials 0.000 claims abstract 2
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000011282 treatment Methods 0.000 abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 238000000586 desensitisation Methods 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
-
- 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
- C22F1/057—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 copper as the next major constituent
Definitions
- the invention relates to the field of AlSiMgCu high-strength aluminum alloy products, belonging to the 6000 series according to the international aluminum nomenclature.
- US patent 4082578 of ALCOA describes two families of alloys, subsequently registered with the Aluminum Association under numbers ⁇ 6009 and 6010, the first favoring formability and the second mechanical strength. These alloys have good resistance to indentation, stress corrosion and exfoliating corrosion, as well as good spot welding ability, which makes them particularly suitable for automobile construction (bodywork and bumpers).
- These alloys have the following composition (by weight): Si: 0.4 - 1.2% Mg: 0.4 - 1.1% Cu: 0.1 - 0.6% Mn: 0.2 - 0.8 % Fe: 0.05 - 0.35% In some cases, it can exceed in the T6 state (according to the designation of the Aluminum Association) 400 MPa for the tensile strength R m and 370 MPa for the limit elastic at 0.2% RQ 2 -
- Patent EP 173632 of the applicant relates to spun alloy products or dies of composition: Si: 0.9 - 1.3% and preferably: 1 - 1.15% Mg: 0.7 - 1.1% "0.8 - 1%
- the subject of the invention is therefore a method of manufacturing wrought products of AlSiMgCu aluminum alloy with high mechanical strength and having good resistance to intercrystalline corrosion, comprising the following steps:
- - income comprising at least one plateau at a temperature between 150 and 250 ⁇ C, and preferably between 165 220 ⁇ C, and of a duration between 30h and 300h, preferably between 70 and 120h in duration equivalent to 175 ⁇ C .
- the tempering preferably comprises another higher temperature level between 185 and 250 ⁇ C, the duration equivalent to 175 ⁇ C being always, for all of the levels, between 30 and 300 h.
- the subject of the invention is also a rolled product spun from an aluminum alloy of the mentioned composition c above, sensitized to intercrystalline corrosion and having, in this desensitized state, an electrical conductivity greater by at least 0.5 MS / m than that measured in state T6.
- It also relates to an airplane fuselage element or a structural element of a road or rail vehicle produced from products according to the invention or from products produced according to the method of the invention.
- the alloys according to the invention having a Mg / Si ratio ⁇ 1 have a rather higher silicon content, since the
- the desensitized alloys according to the invention have a higher electrical conductivity of at least 0.5 MS / m compared to the electrical conductivity in the T6 state when the income applied is of the two-bearing type and of 1 MS / m in the case of single income.
- the Cu content must be> 0.5% to have both sufficient mechanical characteristics and good thermal stability of the alloy. Above 1.1%, there is a risk of seeing stress corrosion and exfoliating corrosion problems, as well as a decrease in toughness due to primary copper particles.
- An addition of Zn at a content of between 0.15 and 1% has, for an identical composition and income, a positive influence on the resistance to intercrystalline corrosion.
- the products according to the invention can be laminated sheets or extruded profiles.
- the alloy is cast in plates (for sheets) or in billets (for profiles) and its transformation range is relatively conventional until final income. Homogenization takes place between 480 and 570 ⁇ C for a period of between 5 and 50 hours.
- the next step is the working by hot rolling or spinning, then, in the case of sheets, cold rolling to a thickness between 0.5 and 15 mm.
- a thorough dissolution is carried out at a temperature close to the solidus, between 540 and 575 ⁇ C, then water quenching with a cooling rate depending on the thickness of the product.
- Tempering is a particular heat treatment which makes it possible both to obtain the required mechanical characteristics while desensitizing the alloy to intercrystalline corrosion.
- This treatment can be either a single-bearing treatment at a temperature between 150 and 250 ⁇ C, and preferably between 165 and 220'C, or a two-bearing treatment, one of the bearings being at a temperature between 150 and 250 ⁇ C (preferably 165 and 220 ⁇ C) and the other at a higher temperature, between 170 and 270 e C.
- the processing time depends on the temperature. We can reduce this duration to a time equivalent to 175 ⁇ C t ⁇ q , linked to the temperature T of the plateau in 'K and to the duration t of treatment at this temperature (the duration of temperature rise being taken into account in the calculation equivalent time) by the relation:
- the optimum desensitization range is between 70 and 120 h for two-bearing treatments and between 150 and 250 h for single-bearing treatments. Following this income, it can be seen that the difference in conductivity with state T6 is always greater than 0.5 MS / m.
- the products produced according to the invention have a modulus of elasticity and an excellent specific modulus (quotient of the modulus by density) taking into account their lower density than that of alloys 2000 for example.
- a modulus of elasticity and an excellent specific modulus (quotient of the modulus by density) taking into account their lower density than that of alloys 2000 for example.
- a module of 71 GPa has been measured, barely less than the module of sheets of the same thickness in 2024 bare alloy, and clearly greater than that of the 2024 plated usually used for the fuselage of commercial aircraft.
- the plate was homogenized 21 h at 530 ° C, peeled, then hot and cold rolled to a thickness of 1.6 mm.
- the dissolution was carried out at 550 ⁇ C for 1 hour.
- the plates were homogenized 21 h at 530 ⁇ C, peeled, then hot and cold rolled to a thickness of 1.6 mm.
- the dissolution was carried out at 550 ⁇ C for 1 hour for alloy A and at 570 ⁇ C for 1 hour for alloy B.
- the conductivities in the T6 state of the alloys A and B are respectively 24.3 and 24.7 MS / m.
- the plate was homogenized at 530 ° C, peeled, hot rolled to a thickness of 35 mm, dissolved in 550 ° C quenched.
- the mechanical characteristics measured in the long through-long direction are as follows: direction L direction TL
- the rolled or extruded products and desensitized to intercrystalline corrosion according to the invention are particularly well suited to the production of structural parts for aeronautics, in particular fuselages, and for road and rail vehicles.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Conductive Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Metal Rolling (AREA)
- Extrusion Of Metal (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/809,704 US5858134A (en) | 1994-10-25 | 1995-10-24 | Process for producing alsimgcu alloy products with improved resistance to intercrystalline corrosion |
KR1019970702642A KR970707314A (ko) | 1994-10-25 | 1995-10-24 | 결정립계간 내식성이 향상된 AlSiMgCu 합금 제품 및 그 제조 방법(METHOD FOR MAKING AlSiMgCu ALLOY PRODUCTS HAVING ENHANCED INTERCRYSTALLINE CORROSION RESISTANCE) |
DE69502508T DE69502508T2 (de) | 1994-10-25 | 1995-10-24 | VERFAHREN ZUR HERSTELLUNG VON GEGENSTÄDEN AUS AlSiMgCu-LEGIERUNG MIT VERBESSERTEN INTERKRISTALLINKORROSIONSWIEDERSTAND |
EP95936606A EP0787217B1 (fr) | 1994-10-25 | 1995-10-24 | Procede de fabrication de produits en alliage alsimgcu a resistance amelioree a la corrosion intercristalline |
JP8513700A JPH10512924A (ja) | 1994-10-25 | 1995-10-24 | 結晶間耐食性が向上したAlSiMgCu合金製製品の製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9413047A FR2726007B1 (fr) | 1994-10-25 | 1994-10-25 | Procede de fabrication de produits en alliage alsimgcu a resistance amelioree a la corrosion intercristalline |
FR94/13047 | 1994-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996012829A1 true WO1996012829A1 (fr) | 1996-05-02 |
Family
ID=9468402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/001412 WO1996012829A1 (fr) | 1994-10-25 | 1995-10-24 | Procede de fabrication de produits en alliage alsimgcu a resistance amelioree a la corrosion intercristalline |
Country Status (8)
Country | Link |
---|---|
US (1) | US5858134A (fr) |
EP (1) | EP0787217B1 (fr) |
JP (1) | JPH10512924A (fr) |
KR (1) | KR970707314A (fr) |
CA (1) | CA2202184A1 (fr) |
DE (1) | DE69502508T2 (fr) |
FR (1) | FR2726007B1 (fr) |
WO (1) | WO1996012829A1 (fr) |
Cited By (8)
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WO1997044501A1 (fr) * | 1996-05-22 | 1997-11-27 | Alusuisse Technology & Management Ag | Element de construction |
WO1999007906A1 (fr) * | 1997-08-04 | 1999-02-18 | Hoogovens Aluminium Walzprodukte Gmbh | ALLIAGE Al-Mg-Zn-Si HAUTE RESISTANCE POUR STRUCTURES SOUDEES ET BRASAGE |
FR2807448A1 (fr) * | 2000-09-19 | 2001-10-12 | Pechiney Rhenalu | Procede de fabrication d'elements de structure d'avions en alliage d'aluminium al-si-mg |
EP1170118A1 (fr) * | 2000-07-05 | 2002-01-09 | Pechiney Rhenalu | Tôles en alliage d'aluminium plaquées pour éléments de structure d'aéronefs |
WO2001092591A3 (fr) * | 2000-06-01 | 2002-05-30 | Alcoa Inc | Alliage de la serie 6000 resistant a la corrosion et se pretant a des applications dans le domaine aerospatial |
FR2856368A1 (fr) * | 2003-06-18 | 2004-12-24 | Pechiney Rhenalu | Piece de peau de carrosserie automobile en tole d'alliage ai-si-mg fixee sur structure acier |
WO2007118489A1 (fr) * | 2006-04-13 | 2007-10-25 | Airbus Deutschland Gmbh | Procédé de traitement thermique d'un profilé, dispositif de traitement thermique d'un profilé et profilé |
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AU766929B2 (en) * | 1999-12-23 | 2003-10-23 | Commonwealth Scientific And Industrial Research Organisation | Heat treatment of age-hardenable aluminium alloys |
AUPQ485399A0 (en) * | 1999-12-23 | 2000-02-03 | Commonwealth Scientific And Industrial Research Organisation | Heat treatment of age-hardenable aluminium alloys |
FR2807449B1 (fr) * | 2000-04-07 | 2002-10-18 | Pechiney Rhenalu | Procede de fabrication d'elements de structure d'avions en alliage d'aluminium al-si-mg |
AUPR360801A0 (en) * | 2001-03-08 | 2001-04-05 | Commonwealth Scientific And Industrial Research Organisation | Heat treatment of age-hardenable aluminium alloys utilising secondary precipitation |
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WO2003010348A2 (fr) * | 2001-07-23 | 2003-02-06 | Corus Aluminium Walzprodukte Gmbh | Alliage al-mg-si haute resistance soudable |
US6925352B2 (en) * | 2001-08-17 | 2005-08-02 | National Research Council Of Canada | Method and system for prediction of precipitation kinetics in precipitation-hardenable aluminum alloys |
BR0312098A (pt) * | 2002-06-24 | 2005-03-29 | Corus Aluminium Walzprod Gmbh | Método para a produção de liga de al-mg-si balanceada de alta resistência e produto desta liga capaz de ser soldado |
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-
1994
- 1994-10-25 FR FR9413047A patent/FR2726007B1/fr not_active Expired - Fee Related
-
1995
- 1995-10-24 KR KR1019970702642A patent/KR970707314A/ko not_active Ceased
- 1995-10-24 DE DE69502508T patent/DE69502508T2/de not_active Revoked
- 1995-10-24 WO PCT/FR1995/001412 patent/WO1996012829A1/fr not_active Application Discontinuation
- 1995-10-24 JP JP8513700A patent/JPH10512924A/ja active Pending
- 1995-10-24 CA CA002202184A patent/CA2202184A1/fr not_active Abandoned
- 1995-10-24 US US08/809,704 patent/US5858134A/en not_active Expired - Lifetime
- 1995-10-24 EP EP95936606A patent/EP0787217B1/fr not_active Revoked
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997044501A1 (fr) * | 1996-05-22 | 1997-11-27 | Alusuisse Technology & Management Ag | Element de construction |
US6685782B1 (en) | 1996-05-22 | 2004-02-03 | Alcan Technology & Management Ltd. | Component |
WO1999007906A1 (fr) * | 1997-08-04 | 1999-02-18 | Hoogovens Aluminium Walzprodukte Gmbh | ALLIAGE Al-Mg-Zn-Si HAUTE RESISTANCE POUR STRUCTURES SOUDEES ET BRASAGE |
KR100502776B1 (ko) * | 1997-08-04 | 2005-07-25 | 후고벤스 알루미늄 발츠프로두크테 게엠베하 | 브레이징 용도 및 용접 구조체용 고강도 알루미늄-마그네슘-아연-실리콘 합금, 그 용접 구조체와 브레이징 구조체 및 그 사용방법 |
US6302973B1 (en) | 1997-08-04 | 2001-10-16 | Corus Aluminium Walzprodukte Gmbh | High strength Al-Mg-Zn-Si alloy for welded structures and brazing application |
WO2001092591A3 (fr) * | 2000-06-01 | 2002-05-30 | Alcoa Inc | Alliage de la serie 6000 resistant a la corrosion et se pretant a des applications dans le domaine aerospatial |
US6537392B2 (en) | 2000-06-01 | 2003-03-25 | Alcoa Inc. | Corrosion resistant 6000 series alloy suitable for aerospace applications |
FR2811337A1 (fr) * | 2000-07-05 | 2002-01-11 | Pechiney Rhenalu | Toles en alliage d'aluminium plaquees pour elements de structure d'aeronefs |
EP1170118A1 (fr) * | 2000-07-05 | 2002-01-09 | Pechiney Rhenalu | Tôles en alliage d'aluminium plaquées pour éléments de structure d'aéronefs |
FR2807448A1 (fr) * | 2000-09-19 | 2001-10-12 | Pechiney Rhenalu | Procede de fabrication d'elements de structure d'avions en alliage d'aluminium al-si-mg |
FR2856368A1 (fr) * | 2003-06-18 | 2004-12-24 | Pechiney Rhenalu | Piece de peau de carrosserie automobile en tole d'alliage ai-si-mg fixee sur structure acier |
WO2004113579A1 (fr) * | 2003-06-18 | 2004-12-29 | Pechiney Rhenalu | Piece de peau de carrosserie automobile en tole d’alliage al-si-mg fixee sur structure acier |
WO2007118489A1 (fr) * | 2006-04-13 | 2007-10-25 | Airbus Deutschland Gmbh | Procédé de traitement thermique d'un profilé, dispositif de traitement thermique d'un profilé et profilé |
US8101120B2 (en) | 2006-04-13 | 2012-01-24 | Airbus Deutschland Gmbh | Method for the heat treatment of a profile, device for the heat treatment of a profile and profile |
CN111705243A (zh) * | 2020-06-12 | 2020-09-25 | 包头常铝北方铝业有限责任公司 | 一种中空玻璃铝隔条用铝合金带材及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2726007B1 (fr) | 1996-12-13 |
JPH10512924A (ja) | 1998-12-08 |
DE69502508T2 (de) | 1998-09-10 |
EP0787217B1 (fr) | 1998-05-13 |
EP0787217A1 (fr) | 1997-08-06 |
US5858134A (en) | 1999-01-12 |
CA2202184A1 (fr) | 1996-05-02 |
FR2726007A1 (fr) | 1996-04-26 |
KR970707314A (ko) | 1997-12-01 |
DE69502508D1 (de) | 1998-06-18 |
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