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WO2021247373A1 - Alliages de fonderie al-si-fe - Google Patents

Alliages de fonderie al-si-fe Download PDF

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Publication number
WO2021247373A1
WO2021247373A1 PCT/US2021/034577 US2021034577W WO2021247373A1 WO 2021247373 A1 WO2021247373 A1 WO 2021247373A1 US 2021034577 W US2021034577 W US 2021034577W WO 2021247373 A1 WO2021247373 A1 WO 2021247373A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum casting
casting alloy
new aluminum
iacs
alloy
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/US2021/034577
Other languages
English (en)
Inventor
Xinyan Yan
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.)
Alcoa USA Corp
Original Assignee
Alcoa USA Corp
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 Alcoa USA Corp filed Critical Alcoa USA Corp
Priority to CN202180042097.0A priority Critical patent/CN115917024A/zh
Priority to BR112022024477A priority patent/BR112022024477A2/pt
Priority to JP2022573625A priority patent/JP2023527566A/ja
Priority to CA3172052A priority patent/CA3172052A1/fr
Priority to EP21818989.2A priority patent/EP4158077A4/fr
Priority to KR1020227046238A priority patent/KR20230023669A/ko
Priority to MX2022014999A priority patent/MX2022014999A/es
Publication of WO2021247373A1 publication Critical patent/WO2021247373A1/fr
Priority to US18/070,783 priority patent/US20230099382A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium
    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • C22F1/043—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 silicon as the next major constituent

Definitions

  • Aluminum alloys are useful in a variety of applications.
  • Aluminum casting (foundry) alloys for instance, are used in dozen of industries, including, for instance, the automotive and consumer electronics industries.
  • the present disclosure relates to new aluminum casting (foundry) alloys and associated products.
  • the new aluminum casting alloys generally comprise (and in some instances consist of or consist essentially of) from 6.0 to 11.5 wt. % Si, from 0.30 to 0.80 wt. % Fe, optionally from 0.07 to 0.20 wt. % of X, wherein X is selected from the group consisting of Mg, Mo, Zr, and combinations thereof, and optionally 100-500 ppm Sr, the balance being aluminum and unavoidable impurities.
  • the new aluminum casting alloys may realize an improve combination of properties, such as an improved combination of two or more of strength, thermal conductivity, corrosion resistance, fluidity, and die soldering resistance. i. Composition
  • the new aluminum casting alloys generally include from 6.0 to 11.5 wt. % Si.
  • a new aluminum casting alloy includes at least 7.0 wt. % Si.
  • a new aluminum casting alloy includes at least 8.0 wt. % Si.
  • a new aluminum casting alloy includes at least 8.5 wt. % Si.
  • a new aluminum casting alloy includes at least 9.0 wt. % Si.
  • a new aluminum casting alloy includes at least 9.5 wt. % Si.
  • a new aluminum casting alloy includes not greater than 11.0 wt. % Si.
  • a new aluminum casting alloy includes not greater than 10.5 wt. % Si.
  • the new aluminum casting alloys generally include from 0.30 to 0.80 wt. % Fe.
  • a new aluminum casting alloy includes at least 0.35 wt. % Fe.
  • a new aluminum casting alloy includes at least 0.40 wt. % Fe.
  • a new aluminum casting alloy includes at least 0.45 wt. % Fe.
  • a new aluminum casting alloy includes at least 0.50 wt. % Fe.
  • a new aluminum casting alloy includes not greater than 0.75 wt. % Fe.
  • a new aluminum casting alloy includes not greater than 0.70 wt. % Fe.
  • a new aluminum casting alloy includes not greater than 0.65 wt.
  • the new alminum casting alloys may optionally contain from 0.07 to 0.20 wt. % of X, where X is selected from the group consisting of Mg, Mo, Zr, and combinations thereof.
  • the group X elements may, for instance, provide enhanced strength.
  • a new aluminum casdting alloy includes from 0.07 to 0.18 wt. % of X.
  • a new aluminum casdting alloy includes from 0.07 to 0.15 wt. % of X.
  • a new aluminum casdting alloy includes from 0.07 to 0.12 wt. % of X.
  • a new aluminum casdting alloy includes from 0.07 to 0.10 wt. % of X.
  • the new aluminum casting alloys are substantially free of all of Mg, Mo, and Zr, having less than 0.07 wt. % of each of Mg, Mo, and Zr.
  • the new aluminum casting alloys include not greater than 0.05 wt. % of each of Mg, Mo, and Zr.
  • the new aluminum casting alloys include not greater than 0.04 wt. % of each of Mg, Mo, and Zr.
  • the new aluminum casting alloys include not greater than 0.03 wt. % of each of Mg, Mo, and Zr.
  • the new aluminum casting alloys include not greater than 0.02 wt. % of each of Mg, Mo, and Zr.
  • the new aluminuim casting alloys may optionally contain stronium (Sr), such as 100-500 ppm Sr.
  • the new aluminum casting alloys are substantially free of strontium, having less than 100 ppm Sr.
  • a new aluminum casting alloy includes not greater than 50 ppm Sr.
  • a new aluminum casting alloy includes not greater than 25 ppm Sr.
  • a new aluminum casting alloy includes not greater than 10 ppm Sr.
  • the balance of the new aluminum casting alloys is generally aluminum and unavoiable impurities.
  • the new aluminum casting alloys are generally substantially free of all of copper (Cu), manganese (Mn), titanium (Ti), chromium (Cr), nickel (Ni), zinc (Zn), and vanadium (V).
  • substantially free of copper means that the new aluminum alloys contain less than 0.10 wt. % Cu. In one embodiment, a new aluminum alloy contains not greater than 0.05 wt. % Cu. In another embodiment, a new aluminum alloy contains not greater than 0.03 wt. % Cu. In yet another embodiment, a new aluminum alloy contains not greater than 0.01 wt. % Cu.
  • substantially free of manganese means that the new aluminum alloys contain less than 0.05 wt. % Mn. In one embodiment, a new aluminum alloy contains not greater than 0.04 wt. % Mn. In another embodiment, a new aluminum alloy contains not greater than 0.03 wt. % Mn. In yet another embodiment, a new aluminum alloy contains not greater than 0.02 wt. % Mn.
  • substantially free of zinc means that the new aluminum alloys contain less than 0.10 wt. % Zn. In one embodiment, a new aluminum alloy contains not greater than 0.05 wt. % Zn. In another embodiment, a new aluminum alloy contains not greater than 0.03 wt. % Zn. In yet another embodiment, a new aluminum alloy contains not greater than 0.01 wt. % Zn.
  • substantially free means that the new aluminum alloy contains not greater than 0.04 wt. % of any of those elements, i.e., the new aluminum alloy contains not greater than 0.04 wt. % of each of Ti, Cr, Ni, and V. In one embodiment, a new aluminum alloy contains not greater than 0.03 wt. % of each of Ti, Cr, Ni, and V. In another embodiment, a new aluminum alloy contains not greater than 0.02 wt. % of each of Ti, Cr, Ni, and V. In one embodiment, the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.10 wt. %.
  • the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.08 wt. %. In yet another embodiment, the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.06 wt. %. ii. Processing
  • the new aluminum casting alloys may be cast using any suitable casting method.
  • the new aluminum casting alloys are shape cast using high presssure die casting (HPDC).
  • HPDC high presssure die casting
  • a new aluminum casting alloy is shape cast into a shape cast product (e.g., a complex shape cast product).
  • the shape cast product is a heat sink.
  • the shape cast product is in the form of an antenna.
  • the shape cast product has a wall thickness of from 1.5 to 5.0 mm.
  • the shape cast product has a height of from 50 to 100 mm.
  • the new aluminum casting alloys may be provided in any appopriate temper, including the as-cast temper. iii. Properties
  • the new aluminum casting alloys may realize an improved combination of properties, such as an improved combination of at least two of strength, thermal conductivity, corrosion resistance, fluidity, and die soldering resistance.
  • Mechanical properties may be measured in accordance with ASTM E8 and B557 (e.g., when directionally solidified). Die soldering resistance may be determined by casting the alloy.
  • a new aluminum casting alloy realizes a tensile yield strength of at least 65 MPa. In one embodiment, a new aluminum casting alloy realizes an elongation of at least 2%. [0016] In one embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 160 W/m/°C at a temperature of 25°C. Thermal conductivity may be measured using equation 1 of ASTM equation 1 of ASTM E1461 using thermal diffusivity results obtained per ASTM E1461-13, specific heat capacity results obtained per ASTM E1269-11 (2016) and density results per ASTM B311-17. In another embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 170 W/m/°C at a temperature of 25°C.
  • a new aluminum casting alloy realizes a thermal conductivity of at least 175 W/m/°C at a temperature of 25 °C. In another embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 180 W/m/°C at a temperature of 25°C. In yet another embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 185 W/m/°C at a temperature of 25 °C. In another embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 190 W/m/°C at a temperature of 25°C. In yet another embodiment, a new aluminum casting alloy realizes a thermal conductivity of at least 195 W/m/°C, or higher, at a temperature of 25 °C.
  • a new aluminum casting alloy realizes an electical conductivity of at least 38% IACS (International Annealed Copper Standard). In another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 39% IACS. In yet another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 40% IACS. In another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 41% IACS. In yet another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 42% IACS. In another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 43% IACS. In yet another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 44% IACS.
  • IACS International Annealed Copper Standard
  • a new aluminum casting alloy realizes an electical conductivity of at least 45% IACS. In yet another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 46% IACS. In another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 47% IACS. In yet another embodiment, a new aluminum casting alloy realizes an electical conductivity of at least 48% IACS, or more.
  • a new aluminum casting alloy is corrosion resistant. As used herein, “corrosion resistant” means the new aluminum casting alloy realizes the same or better corrosion resistance as compared to conventional alloy A356 when tested in accordance with ASTM G110. [0019] In one embodiment, a new aluminum casting alloy has good fluidity.
  • a new aluminum casting alloy is die soldering resistant wherein the as-cast aluminum alloy product is removed from the die without damage to the cast product and/or without sticking to the die. Die soldering can occur during high pressure die casting wherein molten aluminum solders to the die surface. In some embodiments, the new aluminum casting alloys described herein may be cast without being soldered to the die.
  • All alloys contained less than 0.01 wt. % Cu. All alloys contained less than 0.02 wt. % Mn. All alloys contained less than 0.03 wt. % Mg. All alloys contains less than 0.01 wt. % of each of Cr, Ni, Zn, Ti, and Zr. All alloys contained less than 0.02 wt. % of V. The remaining impurities were all less than 0.01 wt. % each.
  • thermal conducity of the alloys was measured at various temperatures, the results of which are shown in Table 2 below.
  • Thermal conductivity may be measured using equation 1 of ASTM El 461 using thermal diffusivity results obtained per ASTM E1461-13, specific heat capacity results obtained per ASTM E1269-11 (2018) and density results per ASTM B311-17.
  • alloys realize high thermal conductivity. Further alloys 1-4 are expected to realize good fluidity due to their silicon content. Alloy 1-2 are expected to have excellent fluidity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

L'invention concerne de nouveaux alliages de fonderie d'aluminium. Les nouveaux alliages de fonderie d'aluminium peuvent comprendre de 6,0 à 11,5 % en poids de Si, de 0,30 à 0,80 % en poids de Fe, éventuellement de 0,07 à 0,20 % en poids de X, X étant choisi dans le groupe constitué par Mg, Mo, Zr et des combinaisons de ceux-ci, et facultativement de 100 à 500 ppm de Sr, le reste étant de l'aluminium et des impuretés inévitables. Les nouveaux alliages de fonderie d'aluminium peuvent être moulés à haute pression en formes complexes. Les nouveaux alliages de fonderie d'aluminium peuvent être utiles, par exemple, dans des applications de dissipation de chaleur/d'antenne.
PCT/US2021/034577 2020-06-01 2021-05-27 Alliages de fonderie al-si-fe Ceased WO2021247373A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CN202180042097.0A CN115917024A (zh) 2020-06-01 2021-05-27 Al-Si-Fe铸造合金
BR112022024477A BR112022024477A2 (pt) 2020-06-01 2021-05-27 Ligas de fundição de al-si-fe
JP2022573625A JP2023527566A (ja) 2020-06-01 2021-05-27 アルミニウム－ケイ素－鉄の鋳造合金
CA3172052A CA3172052A1 (fr) 2020-06-01 2021-05-27 Alliages de fonderie al-si-fe
EP21818989.2A EP4158077A4 (fr) 2020-06-01 2021-05-27 Alliages de fonderie al-si-fe
KR1020227046238A KR20230023669A (ko) 2020-06-01 2021-05-27 Al-Si-Fe 주조 합금
MX2022014999A MX2022014999A (es) 2020-06-01 2021-05-27 Aleaciones de fundicion de al-si-fe.
US18/070,783 US20230099382A1 (en) 2020-06-01 2022-11-29 Al-si-fe casting alloys

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063032973P 2020-06-01 2020-06-01
US63/032,973 2020-06-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/070,783 Continuation US20230099382A1 (en) 2020-06-01 2022-11-29 Al-si-fe casting alloys

Publications (1)

Publication Number Publication Date
WO2021247373A1 true WO2021247373A1 (fr) 2021-12-09

Family

ID=78831477

Family Applications (1)

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PCT/US2021/034577 Ceased WO2021247373A1 (fr) 2020-06-01 2021-05-27 Alliages de fonderie al-si-fe

Country Status (9)

Country Link
US (1) US20230099382A1 (fr)
EP (1) EP4158077A4 (fr)
JP (1) JP2023527566A (fr)
KR (1) KR20230023669A (fr)
CN (1) CN115917024A (fr)
BR (1) BR112022024477A2 (fr)
CA (1) CA3172052A1 (fr)
MX (1) MX2022014999A (fr)
WO (1) WO2021247373A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022203679A1 (de) 2022-04-12 2023-10-12 Zf Friedrichshafen Ag Aluminiumlegierung

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DE102022203679A1 (de) 2022-04-12 2023-10-12 Zf Friedrichshafen Ag Aluminiumlegierung

Also Published As

Publication number Publication date
CN115917024A (zh) 2023-04-04
CA3172052A1 (fr) 2021-12-09
EP4158077A1 (fr) 2023-04-05
US20230099382A1 (en) 2023-03-30
BR112022024477A2 (pt) 2023-01-31
MX2022014999A (es) 2023-02-09
JP2023527566A (ja) 2023-06-29
EP4158077A4 (fr) 2023-09-20
KR20230023669A (ko) 2023-02-17

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