CA3172052A1 - Al-si-fe casting alloys - Google Patents
Al-si-fe casting alloys Download PDFInfo
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- CA3172052A1 CA3172052A1 CA3172052A CA3172052A CA3172052A1 CA 3172052 A1 CA3172052 A1 CA 3172052A1 CA 3172052 A CA3172052 A CA 3172052A CA 3172052 A CA3172052 A CA 3172052A CA 3172052 A1 CA3172052 A1 CA 3172052A1
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- casting alloy
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 119
- 239000000956 alloy Substances 0.000 title claims abstract description 119
- 238000005266 casting Methods 0.000 title claims abstract description 96
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 99
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 99
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 239000011651 chromium Substances 0.000 claims description 17
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 229910052759 nickel Inorganic materials 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 14
- 229910052720 vanadium Inorganic materials 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000011572 manganese Substances 0.000 claims description 11
- 239000011701 zinc Substances 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- -1 titnaium Chemical compound 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 description 19
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000005476 soldering Methods 0.000 description 5
- 238000004512 die casting Methods 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910018619 Si-Fe Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910008289 Si—Fe Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
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
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)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
New aluminum casting (foundry) alloys are disclosed. The new aluminum casting alloys may include 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 be high-pressure die cast into complex shapes. The new aluminum casting alloys may be useful, for instance, in heat sink / antenna applications.
Description
Al-Si-Fe Casting Alloys BACKGROUND
[001] 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.
SUMMARY OF THE DISCLOSURE
[001] 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.
SUMMARY OF THE DISCLOSURE
[002] Broadly, 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. ()/0 Si, from 0.30 to 0.80 wt.
% Fe, optionally from 0.07 to 0.20 wt. % of X, wherein Xis 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
% Fe, optionally from 0.07 to 0.20 wt. % of X, wherein Xis 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
[003] As noted above, the new aluminum casting alloys generally include from 6.0 to 11.5 wt. % Si. In one embodiment, a new aluminum casting alloy includes at least 7.0 wt. % Si. In another embodiment, a new aluminum casting alloy includes at least 8.0 wt. %
Si. In yet another embodiment, a new aluminum casting alloy includes at least 8.5 wt. %
Si. In another embodiment, a new aluminum casting alloy includes at least 9.0 wt. % Si. In yet another embodiment, a new aluminum casting alloy includes at least 9.5 wt. % Si. In one embodiment, a new aluminum casting alloy includes not greater than 11.0 wt. % Si. In another embodiment, a new aluminum casting alloy includes not greater than 10.5 wt. % Si.
Si. In yet another embodiment, a new aluminum casting alloy includes at least 8.5 wt. %
Si. In another embodiment, a new aluminum casting alloy includes at least 9.0 wt. % Si. In yet another embodiment, a new aluminum casting alloy includes at least 9.5 wt. % Si. In one embodiment, a new aluminum casting alloy includes not greater than 11.0 wt. % Si. In another embodiment, a new aluminum casting alloy includes not greater than 10.5 wt. % Si.
[004] As noted above, the new aluminum casting alloys generally include from 0.30 to 0.80 wt. % Fe. In one embodiment, a new aluminum casting alloy includes at least 0.35 wt. % Fe.
In another embodiment, a new aluminum casting alloy includes at least 0.40 wt.
% Fe. In yet another embodiment, a new aluminum casting alloy includes at least 0.45 wt. %
Fe. In another embodiment, a new aluminum casting alloy includes at least 0.50 wt. % Fe. In one embodiment, a new aluminum casting alloy includes not greater than 0.75 wt. %
Fe. In another embodiment, a new aluminum casting alloy includes not greater than 0.70 wt. %
Fe. In yet another embodiment, a new aluminum casting alloy includes not greater than 0.65 wt. % Fe.
In another embodiment, a new aluminum casting alloy includes at least 0.40 wt.
% Fe. In yet another embodiment, a new aluminum casting alloy includes at least 0.45 wt. %
Fe. In another embodiment, a new aluminum casting alloy includes at least 0.50 wt. % Fe. In one embodiment, a new aluminum casting alloy includes not greater than 0.75 wt. %
Fe. In another embodiment, a new aluminum casting alloy includes not greater than 0.70 wt. %
Fe. In yet another embodiment, a new aluminum casting alloy includes not greater than 0.65 wt. % Fe.
[005] As noted above, 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. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.18 wt. %
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.15 wt. %
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.12 wt. %
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.10 wt. %
of X.
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.15 wt. %
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.12 wt. %
of X. In one embodiment, a new aluminum casdting alloy includes from 0.07 to 0.10 wt. %
of X.
[006] In other embodiments, the new aluminum casting alloys are substantially free of all of Mg, Mo, and Zr, haying less than 0.07 wt. % of each of Mg, Mo, and Zr. In another embodiment, the new aluminum casting alloys include not greater than 0.05 wt.
% of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.04 wt. % of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.03 wt. % of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.02 wt. % of each of Mg, Mo, and Zr.
% of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.04 wt. % of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.03 wt. % of each of Mg, Mo, and Zr. In yet another embodiment, the new aluminum casting alloys include not greater than 0.02 wt. % of each of Mg, Mo, and Zr.
[007] As noted above, the new aluminuim casting alloys may optionally contain stronium (Sr), such as 100-500 ppm Sr. In other embodiments, the new aluminum casting alloys are substantially free of strontium, haying less than 100 ppm Sr. In one embodiment, a new aluminum casting alloy includes not greater than 50 ppm Sr. In another embodiment, a new aluminum casting alloy includes not greater than 25 ppm Sr. In yet another embodiment, a new aluminum casting alloy includes not greater than 10 ppm Sr.
[008] The balance of the new aluminum casting alloys is generally aluminum and unavoiable impurities. In this regard, 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).
[009] As used herein, "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.
[0010] As used herein, "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.
[0011] As used herein, "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.
[0012] As used herein, when referring to any of titanium, chromium, nickel and vanadium, "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. %. In another embodiment, the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.08 wt. %. In yet another embodiment, the the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.06 wt. %.
ii. Processing
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. %. In another embodiment, the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.08 wt. %. In yet another embodiment, the the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.06 wt. %.
ii. Processing
[0013] The new aluminum casting alloys may be cast using any suitable casting method. In one embodiment, the new aluminum casting alloys are shape cast using high presssure die casting (HPDC). In another embodiment, a new aluminum casting alloy is shape cast into a shape cast product (e.g., a complex shape cast product). In one embodiment, the shape cast product is a heat sink. In one embodiment, the shape cast product is in the form of an antenna.
In one embodiment, the shape cast product has a wall thickness of from 1.5 to 5.0 mm. In one embodiment, 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
In one embodiment, the shape cast product has a wall thickness of from 1.5 to 5.0 mm. In one embodiment, 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
[0014] As noted above, 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 A STM E8 and 13557 (e.g., when directionally soli difi ed).
Die soldering resistance may be determined by casting the alloy.
Mechanical properties may be measured in accordance with A STM E8 and 13557 (e.g., when directionally soli difi ed).
Die soldering resistance may be determined by casting the alloy.
[0015] In one embodiment, anew 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 (2018) 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. In yet another embodiment, 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.
[0017] In one embodiment, 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. In another embodiment, 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.
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. In another embodiment, 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.
[0018] In one embodiment, 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.
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. As used herein, "good fluidity" means the new aluminum casting alloy realizes the same or better fluidity as compared to conventional alloy A365 under similar high-pressure die casting conditions.
[0020] In one embodiment, 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.
DETAILED DESCRIPTION
Example 1
DETAILED DESCRIPTION
Example 1
[0021] Six aluminum alloys were directionally solified. The compositons of the alloys are shown in Table 1, below.
Table 1 ¨ Alloy Compositions Alloy* Si (wt. %) Fe (wt. %) Sr (ppm) 1 10.7 0.52 170 2 10.5 0.51 3 8.6 0.51 4 6.7 0.52 5 5.0 0.55 20 6 3.1 0.55 *The balance of the alloys was aluminum and impurities. 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.
Table 1 ¨ Alloy Compositions Alloy* Si (wt. %) Fe (wt. %) Sr (ppm) 1 10.7 0.52 170 2 10.5 0.51 3 8.6 0.51 4 6.7 0.52 5 5.0 0.55 20 6 3.1 0.55 *The balance of the alloys was aluminum and impurities. 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.
[0022] The 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 E1461 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.
Table 2- Thermal Conductivity Results Temp. Thermal Conductivity (W/m/ C) ( C) Alloy 6 Alloy 5 Alloy 4 Alloy 3 Alloy 2 Alloy 1
B311-17.
Table 2- Thermal Conductivity Results Temp. Thermal Conductivity (W/m/ C) ( C) Alloy 6 Alloy 5 Alloy 4 Alloy 3 Alloy 2 Alloy 1
[0023] As shown, the 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.
[0024] While various embodiments of the present disclosure have been described in detail, it is apparent that modifications and adaptations of those embodiments will occur to those skilled in the art. However, it is to be expressly understood that such modifications and adaptations are within the spirit and scope of the present disclosure.
Claims (23)
1. An aluminum casting alloy comprising:
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.
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.
2. The aluminum casting alloy of claim 1, comprising at least 7.0 wt. % Si, or at least 8.0 wt.
% Si, or at least 9.0 wt. % Si, or at least 9.5 wt. % Si.
% Si, or at least 9.0 wt. % Si, or at least 9.5 wt. % Si.
3. The aluminum casting alloy of any of the preceding claims, comprising not greater than 11.0 wt. % Si, or not greater than 10.5 wt. % Si.
4. The aluminum casting alloy of any of the preceding claims, comprising at least 0.35 wt. %
Fe, or at least 0.40 wt. % Fe, or at least 0.45 wt. % Fe, or at least 0.50 wt.
% Fe.
Fe, or at least 0.40 wt. % Fe, or at least 0.45 wt. % Fe, or at least 0.50 wt.
% Fe.
5. The aluminum casting alloy of any of the preceding claims, comprising not greater than 0.75 wt. % Fe, or not greater than 0.70 wt. % Fe, or not greater than 0.65 wt.
% Fe.
% Fe.
6. The aluminum casting alloy of any of the preceding claims, wherein the aluminum casting alloy includes X.
7. The aluminum casting alloy of claim 6, comprising from 0.07 to 0.18 wt. %
of X, or from 0.07 to 0.15 wt. % of X, or from 0.07 to 0.12 wt. % of X, or from 0.07 to 0.10 wt. % of X.
of X, or from 0.07 to 0.15 wt. % of X, or from 0.07 to 0.12 wt. % of X, or from 0.07 to 0.10 wt. % of X.
8. The aluminum casting alloy of any of claims 1-5, wherein the aluminum casting alloy is substantially free of all of Mg, Mo, and Zr, haying less than 0.07 wt. % of each of Mg, Mo, and Zr.
9. The aluminum casting alloy of claim 8, comprising not greater than 0.05 wt.
% of each of Mg, Mo, and Zr, or not greater than 0.04 wt. % of each of Mg, Mo, and Zr, or not greater than 0.03 wt. % of each of Mg, Mo, and Zr, or not greater than 0.02 wt. % of each of Mg, Mo, and Zr.
% of each of Mg, Mo, and Zr, or not greater than 0.04 wt. % of each of Mg, Mo, and Zr, or not greater than 0.03 wt. % of each of Mg, Mo, and Zr, or not greater than 0.02 wt. % of each of Mg, Mo, and Zr.
10. The aluminum casting alloy of any of the preceding claims, wherein the aluminum casting alloy includes Sr.
11. The aluminum casting alloy of any of claims 1-9, wherein the aluminum casting alloy includes less than 100 ppm Sr, or not greater than 50 ppm Sr, or not greater than 25 ppm Sr, or not greater than 10 ppm Sr.
12. The aluminum casting alloy of any of the preceding claims, wherein the aluminum casting alloys is substantially free of copper, manganese, zinc, titnaium, chromium, nickel, and vanadium.
13. The aluminum casting alloy of claim 12, comprising less than 0.10 wt. %
Cu, or not greater than 0.05 wt. % Cu, or not greater than 0.03 wt. % Cu, or not greater than 0.01 wt. % Cu.
Cu, or not greater than 0.05 wt. % Cu, or not greater than 0.03 wt. % Cu, or not greater than 0.01 wt. % Cu.
14. The aluminum casting alloy of any of claims 12-13, comprising not greater than 0.04 wt.
% Mn, or not greater than 0.03 wt. % Mn, or not greater than 0.02 wt. % Mn.
% Mn, or not greater than 0.03 wt. % Mn, or not greater than 0.02 wt. % Mn.
15. The aluminum casting alloy of any of claims 12-14, comprising less than 0.10 wt. % Zn, or not greater than 0.05 wt. % Zn, or not greater than 0.03 wt. % Zn, or not greater than 0.01 wt. % Zn.
16. The aluminum casting alloy of any of claims 12-15, comprising not greater than 0.04 wt.
% of each of Ti, Cr, Ni, and V, or not greater than 0.03 wt. % of each of Ti, Cr, Ni, and V, or not greater than 0.02 wt. % of each of Ti, Cr, Ni, and V.
% of each of Ti, Cr, Ni, and V, or not greater than 0.03 wt. % of each of Ti, Cr, Ni, and V, or not greater than 0.02 wt. % of each of Ti, Cr, Ni, and V.
17. The aluminum casting alloy of claim 16, wherein the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.10 wt. %, or wherein the cummulative amounts of Ti, Cr, Ni, and V do not exceed 0.08 wt. %, or wherein the cummulative amounts of Ti, Cr, Ni, and V
do not exceed 0.06 wt. %.
do not exceed 0.06 wt. %.
18. A high-pressure die cast product made from the aluminum casting alloy of any of the preceding claims.
19. The high-pressure die cast product of claim 18, wherein the product realizes a tensile yield strength of at least 65 MPa and an elongation of at least 2%.
20. The high-pressure die cast product of any of claims 18-19, wherein the product realizes a thermal conductivity of at least 160 W/m/ C at a temperature of 25 C, or at least 170 W/m/ C
at a temperature of 25 C, or at least 175 W/m/ C at a temperature of 25 C, or at least 180 W/m/ C at a temperature of 25 C, or at least 185 W/m/ C at a temperature of 25 C., or at least 190 W/m/ C at a temperature of 25 C, or at least 195 W/m/ C, or higher, at a temperature of 25 C.
at a temperature of 25 C, or at least 175 W/m/ C at a temperature of 25 C, or at least 180 W/m/ C at a temperature of 25 C, or at least 185 W/m/ C at a temperature of 25 C., or at least 190 W/m/ C at a temperature of 25 C, or at least 195 W/m/ C, or higher, at a temperature of 25 C.
21. The high-pressure die cast product of any of claims 18-20, wherein the product realizes at an electrical conductivity of at least 38% IACS, or at least 39% IACS, or at least 40% IACS, or at least 41% IACS, or at least 42% IACS, or at least 43% IACS, or at least 44% IACS, or at least 45% IACS, or at least 46% IACS, or at least 47% IACS, or at least 48%
IACS.
IACS.
22 The high-pressure die cast product of any of claims 18-21, wherein the product is in the fonn of a heat sink or an antenna
23 The high-pressure die cast product of any of claims 18-21, wherein the product is in the form of a complex shape casting
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US202063032973P | 2020-06-01 | 2020-06-01 | |
US63/032,973 | 2020-06-01 | ||
PCT/US2021/034577 WO2021247373A1 (en) | 2020-06-01 | 2021-05-27 | Al-si-fe casting alloys |
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EP (1) | EP4158077A4 (en) |
JP (1) | JP2023527566A (en) |
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CN (1) | CN115917024A (en) |
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US5620651A (en) * | 1994-12-29 | 1997-04-15 | Philip Morris Incorporated | Iron aluminide useful as electrical resistance heating elements |
SE505823C2 (en) * | 1995-10-10 | 1997-10-13 | Opticast Ab | Process for the preparation of iron-containing aluminum alloys free of flaky phase of Al5FeSi type |
WO2005098065A1 (en) * | 2004-04-05 | 2005-10-20 | Nippon Light Metal Company, Ltd. | Aluminum alloy casting material for heat treatment excelling in heat conduction and process for producing the same |
EP2226397A1 (en) * | 2009-03-06 | 2010-09-08 | Rheinfelden Alloys GmbH & Co. KG | Aluminium alloy |
JP2013204087A (en) * | 2012-03-28 | 2013-10-07 | Honda Kinzoku Gijutsu Kk | High-strength highly heat-conductive aluminum alloy member and method for manufacturing the same |
CN104532076A (en) * | 2014-11-19 | 2015-04-22 | 无锡鸿声铝业有限公司 | Aluminum alloy |
US20170121793A1 (en) * | 2015-04-15 | 2017-05-04 | Daiki Aluminium Industry Co., Ltd. | Aluminum alloy for die casting, and aluminum alloy die cast produced using same |
FR3038242B1 (en) * | 2015-07-02 | 2017-06-23 | Constellium Neuf-Brisach | ALUMINUM ALLOY FOR WIRELESS LASER WELDING |
US20170107599A1 (en) * | 2015-10-19 | 2017-04-20 | GM Global Technology Operations LLC | New high pressure die casting aluminum alloy for high temperature and corrosive applications |
EP3235917B1 (en) * | 2016-04-19 | 2018-08-15 | Rheinfelden Alloys GmbH & Co. KG | Alloy for pressure die casting |
CN109988945A (en) * | 2017-12-29 | 2019-07-09 | 华为技术有限公司 | A kind of pack alloy and preparation method thereof and communication product |
CN109338176A (en) * | 2018-12-12 | 2019-02-15 | 苏州大学 | A kind of high intensity high thermal conductivity cast aluminium alloy gold and preparation method thereof |
CN109706355A (en) * | 2019-03-12 | 2019-05-03 | 苏州春兴精工股份有限公司 | A kind of high thermal conductivity die-cast aluminum alloy material and preparation method thereof |
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US20230099382A1 (en) | 2023-03-30 |
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