WO2020102441A2 - Alliages d'aluminium 7xxx améliorés - Google Patents

Alliages d'aluminium 7xxx améliorés Download PDF

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Publication number
WO2020102441A2
WO2020102441A2 PCT/US2019/061305 US2019061305W WO2020102441A2 WO 2020102441 A2 WO2020102441 A2 WO 2020102441A2 US 2019061305 W US2019061305 W US 2019061305W WO 2020102441 A2 WO2020102441 A2 WO 2020102441A2
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WO
WIPO (PCT)
Prior art keywords
aluminum alloy
7xxx aluminum
temper
7xxx
realizes
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.)
Ceased
Application number
PCT/US2019/061305
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English (en)
Other versions
WO2020102441A3 (fr
Inventor
Severine CAMBIER
Julien Boselli
Jen C. Lin
Lynette M. Karabin
Francine S. Bovard
Wenping Zhang
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.)
Howmet Aerospace Inc
Original Assignee
Arconic Inc
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
Application filed by Arconic Inc filed Critical Arconic Inc
Priority to EP19885961.3A priority Critical patent/EP3880857A4/fr
Priority to CN201980074250.0A priority patent/CN113015816A/zh
Priority to CA3118152A priority patent/CA3118152A1/fr
Priority to BR112021008744-3A priority patent/BR112021008744B1/pt
Publication of WO2020102441A2 publication Critical patent/WO2020102441A2/fr
Publication of WO2020102441A3 publication Critical patent/WO2020102441A3/fr
Priority to US17/308,794 priority patent/US20210340656A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

  • a new 7xxx aluminum alloy includes at least 0.09 wt. % Ag. In yet another embodiment, a new 7xxx aluminum alloy includes at least 0.10 wt. % Ag. In another embodiment, a new 7xxx aluminum alloy includes at least 0.15 wt. % Ag. In yet another embodiment, a new 7xxx aluminum alloy includes at least 0.20 wt. % Ag. In another embodiment, a new 7xxx aluminum alloy includes at least 0.225 wt. % Ag. In yet another embodiment, a new 7xxx aluminum alloy includes at least 0.25 wt. % Ag. In one embodiment, a new 7xxx aluminum alloy includes not greater than 0.7 wt. % Ag.
  • a new 7xxx aluminum alloy includes not greater than 0.5 wt. % Ag. In yet another embodiment, a new 7xxx aluminum alloy includes not greater than 0.4 wt. % Ag. In another embodiment, a new 7xxx aluminum alloy includes not greater than 0.35 wt. % Ag. In yet another embodiment, a new 7xxx aluminum alloy includes not greater than 0.325 wt. % Ag. In another embodiment, a new 7xxx aluminum alloy includes not greater than 0.30 wt. % Ag.
  • the combined amount of copper and magnesium in a new 7xxx aluminum alloy is at least 3.75 wt. % (i.e., (wt. % Cu) + (wt. % Mg) > 3.75 wt. %). In yet another embodiment, the combined amount of copper and magnesium in a new 7xxx aluminum alloy is at least 4.0 wt. % (i.e., (wt. % Cu) + (wt. % Mg) > 4.0 wt. %).
  • the new 7xxx aluminum alloys may include one or more of Zr, Cr, V, Hf, other rare earth elements, and combinations thereof as grain structure control materials (e.g., from 0.05-0.25 wt. % each of one or more of Zr, Cr, V, Hf, and other rare earth elements), limiting the total amounts of these elements such that large primary particles do not form in the alloy.
  • Grain structure control materials may, for instance, facilitate an appropriate grain structure (e.g., an unrecry stallized grain structure).
  • grain structure control materials include Zr, Cr, V, Hf, and other rare earth elements, to name a few, but excludes Mn and Sc.
  • % Cr is not greater than 0.20 wt. % (i.e., wt. % Zr + wt. % Cr ⁇ 0.20 wt. %).
  • a new 7xxx aluminum alloy product may include at least 0.09 wt. % of at least one of Zr and Cr.
  • a new 7xxx aluminum alloy product may include at least 0.09 wt. % of both Zr and Cr.
  • a new 7xxx aluminum alloy includes not greater than 0.05 wt. % Li. Lithium handling is difficult and lithium may negatively impact the properties of the 7xxx aluminum alloys. In one embodiment, a new 7xxx aluminum alloy includes not greater than 0.03 wt. % Li. In another embodiment, a new 7xxx aluminum alloy includes not greater than 0.01 wt. % Li. In yet another embodiment, a new 7xxx aluminum alloy includes not greater than 0.005 wt. % Li, or less.
  • the new alloy can be prepared into wrought form, and in the appropriate temper, by more or less conventional practices, including direct chill (DC) casting the aluminum alloy into ingot form.
  • DC direct chill
  • these ingots may be further processed by hot working the product.
  • the product may then be optionally cold worked and/or optionally annealed. After any cold work and any anneal (which may occur multiple times and in any order), the product may then be solution heat treated, quenched, such as in a gas (e.g.
  • a new 7xxx aluminum alloy product has a thickness of at least 38 mm and realizes a typical tensile yield strength (ST) of at least 430 MPa in a T7 temper.
  • a new 7xxx aluminum alloy product has a thickness of at least 38 mm and realizes a typical tensile yield strength (ST) of at least 440 MPa, or more, in a T7 temper.
  • the above strength properties may be realized in products having a thickness of at least 60 mm, or at least 80 mm, or at least 100 mm, at least 120 mm, or at least 140 mm, or higher.
  • an alloy passes HHSCC-G49 testing at 90°C when all specimens survive at least 10 days.
  • a failure is when the specimen breaks into two halves, either along the gauge length or at one of the specimen shoulders adjoining the gauge length. Shoulder failures are statistically equivalent to gauge length failures. Thread failures are only included when they are statistically equivalent to the gauge length failures when determining whether an alloy passes HHSCC-G49.
  • a thread failure is when a crack occurs in a threaded end of a specimen as opposed to in the gauge length. In some instance, thread failures may not be detectable until the specimen is removed from the stressing frame.
  • “Hot working” means working the aluminum alloy product at elevated temperature, generally at least 250°F.
  • the ingots were homogenized, scalped, and then hot rolled into plate.
  • the plates had a final gauge of about 1.125 inches (28.575 mm).
  • the plates were then flattened and then solution heat treated and then quenched in 195°F water.
  • the 195°F water quench simulates quench conditions for thick plates (e.g., plates having a final gauge thickness of about 8-12 inches).
  • the plates were stretched and then artificially aged to a T7 temper. Mechanical properties of the plates were then evaluated. Strength and elongation properties were measured in accordance with ASTM B557 and E8. Fracture toughness properties were measured in accordance with ASTM E399. The results are provided in Tables 2-3, below.
  • the new invention alloy realizes improved strength, elongation, and fracture toughness as compared to the conventional alloys.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Continuous Casting (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

La présente invention concerne de nouveaux alliages d'aluminium 7xxx. Les nouveaux alliages à base d'aluminium 7xxx comprennent généralement de 0,05 à 1,0 % en poids d'Ag. Selon un aspect, un nouvel alliage d'aluminium 7xxx comprend de 0,05 à 1,0 % en poids d'Ag, de 5,5 à 9,0 % en poids de Zn, de 1,2 à 2,6 % en poids de Cu, de 1,3 à 2,5 % en poids de Mg, jusqu'à 0,60 % en poids de Mn, jusqu'à 1,0 % en poids d'au moins un élément de régulation de structure de grain, le ou les éléments de régulation de structure de grain étant choisis dans le groupe constitué par Zr, Sc, Cr, V, Hf, d'autres éléments de terres rares, et des combinaisons de ceux-ci, jusqu'à 0,30 % en poids de Fe, jusqu'à 0,30 % en poids de Si, jusqu'à 0,15 % en poids de Ti, pas plus de 0,08 % en poids de Sc, et pas plus de 0,05 % en poids de Li, le reste étant de l'aluminium, des éléments et des impuretés incidents éventuels.
PCT/US2019/061305 2018-11-14 2019-11-13 Alliages d'aluminium 7xxx améliorés Ceased WO2020102441A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19885961.3A EP3880857A4 (fr) 2018-11-14 2019-11-13 Alliages d'aluminium 7xxx améliorés
CN201980074250.0A CN113015816A (zh) 2018-11-14 2019-11-13 改进的7xxx铝合金
CA3118152A CA3118152A1 (fr) 2018-11-14 2019-11-13 Alliages d'aluminium 7xxx ameliores
BR112021008744-3A BR112021008744B1 (pt) 2018-11-14 2019-11-13 Produto de liga de alumínio trabalhada feito de uma liga de alumínio 7xxx e lingote ou tarugo
US17/308,794 US20210340656A1 (en) 2018-11-14 2021-05-05 7xxx aluminum alloys

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862767441P 2018-11-14 2018-11-14
US62/767,441 2018-11-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/308,794 Continuation US20210340656A1 (en) 2018-11-14 2021-05-05 7xxx aluminum alloys

Publications (2)

Publication Number Publication Date
WO2020102441A2 true WO2020102441A2 (fr) 2020-05-22
WO2020102441A3 WO2020102441A3 (fr) 2020-08-20

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PCT/US2019/061305 Ceased WO2020102441A2 (fr) 2018-11-14 2019-11-13 Alliages d'aluminium 7xxx améliorés

Country Status (5)

Country Link
US (1) US20210340656A1 (fr)
EP (1) EP3880857A4 (fr)
CN (1) CN113015816A (fr)
CA (1) CA3118152A1 (fr)
WO (1) WO2020102441A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112111680A (zh) * 2020-09-17 2020-12-22 湖南恒佳新材料科技有限公司 一种铝合金及其板材的制备方法
WO2020263864A1 (fr) 2019-06-24 2020-12-30 Arconic Technologies Llc Alliages d'aluminium 7xxx corroyés épais perfectionnés et leurs procédés de production
CN112981197A (zh) * 2021-04-21 2021-06-18 中国航发北京航空材料研究院 一种无粗晶的变形铝合金及其制备方法和制品

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Publication number Priority date Publication date Assignee Title
US12421576B2 (en) 2017-02-01 2025-09-23 Hrl Laboratories, Llc Aluminum-chromium-zirconium alloys
JP7621248B2 (ja) 2018-11-07 2025-01-24 アーコニック テクノロジーズ エルエルシー ２ｘｘｘアルミニウムリチウム合金
CN114182146A (zh) * 2021-12-21 2022-03-15 湖南顶立科技有限公司 一种Ag强化铝合金及其制备方法
CN115433859B (zh) * 2022-09-13 2023-05-12 苏州中成同人新材料科技有限公司 一种基于稀土合金的变形铝合金的变质方法

Citations (8)

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JPH0413833A (ja) 1990-05-02 1992-01-17 Furukawa Alum Co Ltd 耐応力腐食割れ性に優れた溶接構造材用高力アルミニウム合金
US6972110B2 (en) 2000-12-21 2005-12-06 Alcoa Inc. Aluminum alloy products having improved property combinations and method for artificially aging same
JP2008045157A (ja) 2006-08-11 2008-02-28 Horikawa Inc 超高力アルミニウム粉末合金製メガネ部品及びその製造方法
CN101818290A (zh) 2010-05-28 2010-09-01 中南大学 一种同时添加Ag、Ge的低淬火敏感性铝合金
US8673209B2 (en) 2007-05-14 2014-03-18 Alcoa Inc. Aluminum alloy products having improved property combinations and method for artificially aging same
WO2016183030A1 (fr) 2015-05-11 2016-11-17 Alcoa Inc. Alliages d'aluminium de série 7xxx corroyés épais améliorés et procédés de production correspondants
WO2018237196A1 (fr) 2017-06-21 2018-12-27 Arconic Inc. Alliages d'aluminium 7xxx corroyés épais perfectionnés et leurs procédés de production
WO2020007437A1 (fr) 2018-07-02 2020-01-09 Otto Fuchs - Kommanditgesellschaft Alliage d'aluminium et produit d'alliage d'aluminium survieilli obtenu à partir d'un tel alliage

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JP2008045157A (ja) 2006-08-11 2008-02-28 Horikawa Inc 超高力アルミニウム粉末合金製メガネ部品及びその製造方法
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WO2016183030A1 (fr) 2015-05-11 2016-11-17 Alcoa Inc. Alliages d'aluminium de série 7xxx corroyés épais améliorés et procédés de production correspondants
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WO2020007437A1 (fr) 2018-07-02 2020-01-09 Otto Fuchs - Kommanditgesellschaft Alliage d'aluminium et produit d'alliage d'aluminium survieilli obtenu à partir d'un tel alliage

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See also references of EP3880857A4

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Publication number Priority date Publication date Assignee Title
WO2020263864A1 (fr) 2019-06-24 2020-12-30 Arconic Technologies Llc Alliages d'aluminium 7xxx corroyés épais perfectionnés et leurs procédés de production
CN112111680A (zh) * 2020-09-17 2020-12-22 湖南恒佳新材料科技有限公司 一种铝合金及其板材的制备方法
CN112981197A (zh) * 2021-04-21 2021-06-18 中国航发北京航空材料研究院 一种无粗晶的变形铝合金及其制备方法和制品

Also Published As

Publication number Publication date
BR112021008744A2 (pt) 2021-08-10
CN113015816A (zh) 2021-06-22
WO2020102441A3 (fr) 2020-08-20
CA3118152A1 (fr) 2020-05-22
EP3880857A4 (fr) 2022-08-03
EP3880857A2 (fr) 2021-09-22
US20210340656A1 (en) 2021-11-04

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