CN113913653A - Aluminum-silicon alloy, casting and preparation method thereof - Google Patents
Aluminum-silicon alloy, casting and preparation method thereof Download PDFInfo
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- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 229910000676 Si alloy Inorganic materials 0.000 title claims abstract description 140
- 238000005266 casting Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 90
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 62
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 44
- 229910052742 iron Inorganic materials 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 36
- 239000011777 magnesium Substances 0.000 claims abstract description 36
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 33
- 239000010703 silicon Substances 0.000 claims abstract description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010949 copper Substances 0.000 claims abstract description 30
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 24
- 239000011701 zinc Substances 0.000 claims abstract description 24
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000010936 titanium Substances 0.000 claims abstract description 23
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 23
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 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 abstract description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 36
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 28
- 229910052746 lanthanum Inorganic materials 0.000 claims description 23
- 229910052712 strontium Inorganic materials 0.000 claims description 23
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 23
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 18
- 238000003723 Smelting Methods 0.000 claims description 18
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 18
- 229910052727 yttrium Inorganic materials 0.000 claims description 17
- 229910052748 manganese Inorganic materials 0.000 claims description 15
- 239000011572 manganese Substances 0.000 claims description 15
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 14
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 10
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007858 starting material Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 31
- 230000007797 corrosion Effects 0.000 abstract description 31
- 150000002910 rare earth metals Chemical class 0.000 abstract description 16
- 238000005507 spraying Methods 0.000 abstract description 13
- 230000001276 controlling effect Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 description 33
- 229910045601 alloy Inorganic materials 0.000 description 32
- 229910000838 Al alloy Inorganic materials 0.000 description 30
- -1 aluminum manganese Chemical compound 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000007670 refining Methods 0.000 description 10
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 9
- 238000007872 degassing Methods 0.000 description 9
- 238000007711 solidification Methods 0.000 description 8
- 230000008023 solidification Effects 0.000 description 8
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 description 7
- 238000005336 cracking Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000005496 eutectics Effects 0.000 description 5
- YNDGDLJDSBUSEI-UHFFFAOYSA-N aluminum strontium Chemical compound [Al].[Sr] YNDGDLJDSBUSEI-UHFFFAOYSA-N 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- UQBKQFMSHMLFJK-UHFFFAOYSA-N copper;zinc Chemical compound [Cu+2].[Zn+2] UQBKQFMSHMLFJK-UHFFFAOYSA-N 0.000 description 3
- 238000004512 die casting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910017361 Fe2Si Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052773 Promethium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009716 squeeze casting Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The invention relates to an aluminum-silicon alloy, a casting and a preparation method thereof. The aluminum-silicon alloy comprises the following element components in percentage by weight: 8 to 14 percent of silicon, 0.1 to 1.1 percent of magnesium, less than or equal to 0.4 percent of iron, 0.1 to 0.5 percent of manganese, 0.1 to 0.6 percent of titanium, 0.01 to 0.4 percent of rare earth elements, less than or equal to 0.2 percent of copper, less than or equal to 0.2 percent of zinc, less than or equal to 0.2 percent of nickel, less than or equal to 0.2 percent of lead, less than or equal to 0.2 percent of tin and the balance of aluminum. According to the aluminum-silicon alloy provided by the invention, by regulating and controlling various elements such as silicon, magnesium, iron, manganese, titanium, rare earth, copper and the like in the aluminum-silicon alloy, wherein the iron element and the rare earth element are controlled in a lower range, the cost of raw materials can be reduced, so that the aluminum-silicon alloy has excellent corrosion resistance on the basis of not influencing the mechanical property, does not need spraying protection treatment when being applied to a product, saves the spraying protection treatment cost, and finally obtains the aluminum-silicon alloy with low cost, excellent mechanical property and corrosion resistance.
Description
Technical Field
The invention relates to the field of aluminum-silicon alloy materials, in particular to an aluminum-silicon alloy, a casting and a preparation method thereof.
Background
The cast aluminum-silicon alloy, especially the aluminum-silicon alloy, has good casting performance, so that the aluminum-silicon alloy casting is widely applied in the traditional manufacturing industry, especially the automobile industry. Due to the application specificity of automobile products, the automobile parts need to adapt to various weather environments, and parts of the automobile parts are often corroded by various environmental atmospheres such as coastal atmosphere, high-temperature damp heat, acid rain, snow melting agents and the like. In addition, corrosion is also a concern during vehicle storage and transportation.
At present, aiming at the corrosion prevention of the aluminum-silicon alloy casting, measures such as spraying protection and the like are generally adopted to solve the problem, but the spraying treatment improves the complexity of the part preparation process and brings cost improvement. Therefore, how to develop a novel aluminum-silicon alloy casting which does not affect the mechanical property and has excellent corrosion resistance simultaneously, the aluminum-silicon alloy casting does not need spraying protection treatment when being applied to products, the effect of the aluminum-silicon alloy casting without spraying treatment is achieved, and the novel aluminum-silicon alloy casting has important significance for reducing the cost of the aluminum-silicon alloy casting and expanding the application of the aluminum-silicon alloy casting.
Disclosure of Invention
Therefore, the aluminum-silicon alloy, the casting and the preparation method thereof need to be provided, and the aluminum-silicon alloy has excellent corrosion resistance on the basis of not influencing the mechanical property, so that the aluminum-silicon alloy is applied to products without spraying protection treatment, and the effect of spraying-free treatment of the aluminum-silicon alloy casting is achieved.
In one aspect of the invention, the aluminum-silicon alloy comprises the following element components in percentage by weight:
8 to 14 percent of silicon, 0.1 to 1.1 percent of magnesium, less than or equal to 0.4 percent of iron, 0.1 to 0.5 percent of manganese, 0.1 to 0.6 percent of titanium, 0.01 to 0.4 percent of rare earth elements, less than or equal to 0.2 percent of copper, less than or equal to 0.2 percent of zinc, less than or equal to 0.2 percent of nickel, less than or equal to 0.2 percent of lead, less than or equal to 0.2 percent of tin and the balance of aluminum.
In some of these embodiments, the aluminum-silicon alloy may include, in weight percent,
the silicon accounts for 9 to 11 percent; and/or
The magnesium accounts for 0.2 to 1.0 percent; and/or
The iron content is less than or equal to 0.2 percent; and/or
The manganese accounts for 0.2 to 0.5 percent; and/or
The titanium accounts for 0.1 to 0.4 percent; and/or
The rare earth element is 0.05-0.2%.
In some embodiments, the aluminum-silicon alloy further comprises, in addition to the elemental composition of any one of the above alloys, 0.005 to 0.2 weight percent strontium.
In some of these embodiments, the strontium is present in the aluminum-silicon alloy in an amount of 0.01 to 0.03 weight percent.
In some of these embodiments, the rare earth element is selected from at least one of lanthanum, cerium, yttrium, and ytterbium.
In some of these embodiments, the rare earth elements are lanthanum and cerium, or yttrium and cerium.
In some embodiments, the rare earth elements are in a mass ratio of 1: (1-2) lanthanum and cerium, or the mass ratio of lanthanum to cerium is 1: (1-2) yttrium and cerium.
In some of these embodiments, the copper is 0.1% or less by weight percent of the aluminum-silicon alloy; and/or
The zinc content is less than or equal to 0.1 percent; and/or
The nickel content is less than or equal to 0.1 percent; and/or
The lead is less than or equal to 0.1 percent; and/or
The tin content is less than or equal to 0.1 percent.
In some of these embodiments, the aluminum-silicon alloy contains unavoidable impurities in an amount of less than or equal to 0.15% by weight.
In another aspect of the present invention, there is provided an aluminum-silicon alloy casting made of the aluminum-silicon alloy according to any one of the above aspects.
In another aspect of the invention, a method for preparing an aluminum-silicon alloy casting is provided, which comprises the following steps:
providing a starting material in accordance with the elemental composition of the aluminium-silicon alloy as defined in any one of the preceding claims;
and after smelting the raw materials, casting and forming.
The aluminum-silicon alloy disclosed by the invention takes aluminum as a matrix, takes Si and Mg as main alloy elements, controls the content of the main alloy elements to be specific, maintains the content of iron in a lower content range, simultaneously adds a manganese element, a titanium element and a rare earth element with lower content, controls the copper element, the zinc element, the nickel element, the lead element and the tin element to be in a proper proportion range, and simultaneously can add a strontium element with certain content, so that the aluminum-silicon alloy is strengthened to ensure the mechanical property of the aluminum-silicon alloy, simultaneously improves the corrosion resistance of the aluminum-silicon alloy and reduces the hot cracking tendency of the aluminum-silicon alloy, and further the aluminum-silicon alloy has excellent corrosion resistance on the basis of not influencing the mechanical property, so that the aluminum-silicon alloy does not need to be sprayed and protected in products, and achieves the effect of avoiding spraying treatment of aluminum-silicon alloy castings.
According to the aluminum-silicon alloy provided by the invention, the aluminum alloy is strengthened by regulating and controlling various elements such as silicon, magnesium, iron, manganese, titanium, rare earth, copper, strontium and the like in the aluminum-silicon alloy and replacing the copper element with the magnesium element; meanwhile, the low copper content is kept, and the corrosion resistance of the aluminum alloy is favorably improved. In addition, the low content of iron and zinc elements is also beneficial to improving the corrosion resistance of the aluminum alloy. Generally speaking, the larger the solidification temperature range of the alloy is, the greater the hot cracking and solidification shrinkage tendencies are, and the aluminum-silicon alloy provided by the invention contains low content of alloy elements such as copper, zinc and the like which are easy to form eutectic with low melting point, so that the solidification temperature range is narrower than that of the traditional aluminum alloys such as YL112, YL113, ADC12 and the like, and the aluminum-silicon alloy has relatively lower hot cracking and solidification shrinkage tendencies. The invention also introduces titanium, low-content rare earth elements and strontium elements, realizes the grain refinement, grain boundary purification and good modification of the aluminum alloy, the grain refinement can improve the strength performance of the aluminum alloy, the grain boundary purification is beneficial to improving the corrosion resistance of the aluminum alloy, and the strontium element is used as the long-acting modifier of the aluminum alloy and is added in small amount to further improve the alloy performance. The iron element and the rare earth element are controlled in a lower range, the cost of raw materials can be reduced, meanwhile, the aluminum-silicon alloy shows excellent corrosion resistance, the prepared aluminum-silicon alloy casting does not need spraying protection treatment, the spraying protection treatment cost is saved, and finally, the aluminum-silicon alloy with low cost, excellent mechanical property and corrosion resistance is obtained.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
One embodiment of the invention provides an aluminum-silicon alloy which comprises the following element components in percentage by weight:
8 to 14 percent of silicon, 0.1 to 1.1 percent of magnesium, less than or equal to 0.4 percent of iron, 0.1 to 0.5 percent of manganese, 0.1 to 0.6 percent of titanium, 0.01 to 0.4 percent of rare earth elements, less than or equal to 0.2 percent of copper, less than or equal to 0.2 percent of zinc, less than or equal to 0.2 percent of nickel, less than or equal to 0.2 percent of lead, less than or equal to 0.2 percent of tin and the balance of aluminum.
Researches show that the mass percent of silicon in the aluminum-silicon alloy is 8-14%, the content of silicon element is close to the eutectic point, the alloy fluidity is good, and simultaneously the hardness and the tensile strength of the aluminum-silicon alloy can be improved. As the silicon content continues to increase, the crucible is easily eroded and hard spots appear, so that the workability becomes poor.
In some of these embodiments, the silicon content in the aluminum-silicon alloy is 9 to 11% by weight.
The magnesium element with the content is added into the aluminum-silicon alloy, and the magnesium element can act together with the silicon element and the iron element in the aluminum-silicon alloy, so that the strength performance and the corrosion resistance of the alloy are improved, and the die sticking tendency can be reduced. However, if the magnesium content is too high, the fluidity of the alloy is lowered, and the tendency of the alloy to shrink and crack is increased.
In some of these embodiments, the magnesium is present in the aluminum-silicon alloy in an amount of 0.2 to 1.0 weight percent. Further, for example, in some examples, magnesium is 0.2% to 0.4%; in some examples, the magnesium is 0.4% to 1.0%.
The iron element is generally harmful in aluminum alloys, and the iron in aluminum-silicon alloys is mainly in the beta phase (Al)9Fe2Si) which is hard and brittle and tends to penetrate the alpha phase grains in coarse needle form, reducing the plasticity and corrosion resistance of the aluminum alloy casting. But the iron element is beneficial to avoiding die sticking, and can also refine grains to a certain degree and improve the metal fluidity. Therefore, the shape of the iron phase is regulated and controlled through microalloying, the acicular iron phase is regulated into a ball shape and a Chinese character shape, and the adverse effect of iron elements on the performance of the aluminum alloy is reduced. The mass percent of iron in the aluminum-silicon alloy is specifically controlled to be less than or equal to 0.4 percent by comprehensively considering the cost of raw materials and the corrosion resistance.
In some of these embodiments, the iron content in the aluminum-silicon alloy is 0.2% by weight or less.
The aluminum-silicon alloy of the invention is added with the manganese element with the content, can act together with the silicon element, the iron element and the magnesium element in the aluminum-silicon alloy, and mainly plays a role in improving the die sticking tendency and reducing the adverse effect of the iron element by improving the form of an iron-containing phase.
In some of these embodiments, the manganese is present in the aluminum-silicon alloy in an amount of 0.2 to 0.5 weight percent.
The aluminum-silicon alloy of the invention is added with the titanium element with the content, which is beneficial to refining the grain structure, improving the mechanical property of the alloy and reducing the hot cracking tendency.
In some of these embodiments, the titanium content in the aluminum-silicon alloy is 0.1 to 0.4 weight percent.
In some embodiments, the strength and plasticity of the aluminum-silicon alloy can be further improved by adding 0.005-0.2% of strontium element in the aluminum-silicon alloy. Strontium is used as the long-acting alterant of the aluminum alloy, and can obtain good modification effect by adding a small amount of strontium, improve the form of eutectic silicon and improve the strength and the plasticity of the alloy.
Further, in the aluminum-silicon alloy, the content of the strontium element is 0.01-0.03 percent by weight.
On the basis of the iron and silicon elements with the contents, the rare earth elements with the contents are added in the aluminum-silicon alloy, so that the size and the appearance of alpha aluminum crystal grains in the alloy can be improved, the cast aluminum-silicon alloy is modified, the rare earth elements can form high-melting-point compounds with the iron, silicon and other elements of the aluminum alloy, the alpha phase is refined, the needle-shaped iron phase is broken and cracked into a ball-shaped iron phase, and the influence of the iron phase on the performance and the corrosion resistance of the aluminum alloy is reduced. In addition, researches show that eutectic silicon can be further spheroidized by adopting the rare earth and strontium element for composite modification, and the comprehensive performance of the material is improved. Meanwhile, the rare earth elements can also be mixed with Al in the aluminum liquid2O3And hydrogen reacts as follows to play a refining role:
2Re+Al2O3＝2Al+Re2O3
Re+2[H]→ReH2
furthermore, in the aluminum-silicon alloy, the content of the rare earth elements is 0.05-0.2 percent by weight.
Furthermore, in the aluminum-silicon alloy, the content of the rare earth elements is 0.1-0.2 percent by weight.
The rare earth element includes at least one of 17 elements of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), yttrium (Y), and scandium (Sc).
In some of these embodiments, the rare earth element is selected from at least one of lanthanum, cerium, yttrium, and ytterbium. Further, the rare earth elements are lanthanum and cerium, or yttrium and cerium, or ytterbium and cerium.
Further, the mass ratio of the rare earth elements is 1: (1-2) lanthanum and cerium, or the mass ratio of lanthanum to cerium is 1: (1-2) yttrium and cerium, or the mass ratio of yttrium to cerium is 1: ytterbium and cerium in (1-2).
Lanthanum, cerium, yttrium and ytterbium in the rare earth elements have relatively low cost advantage, and the addition of the elements is beneficial to reducing the material cost of the aluminum-silicon alloy.
The five elements of copper, zinc, nickel, lead and tin are used as control elements in the aluminum-silicon alloy for management and control, and the addition amount of each element in the five elements is respectively required to be less than or equal to 0.2 percent in percentage by mass.
Furthermore, the addition amount of each of the five elements of copper, zinc, nickel, lead and tin is required to be less than or equal to 0.1 percent in percentage by mass. Furthermore, the addition amounts of the lead and tin elements are respectively required to be less than or equal to 0.05 percent in percentage by mass.
In some of these embodiments, the total unavoidable impurities in the aluminum-silicon alloy is controlled to be less than or equal to 0.15%.
Further, in some examples, the aluminum-silicon alloy includes the following elemental compositions in weight percent: 8 to 14 percent of silicon; 0.1 to 1.0 percent of magnesium; iron is less than or equal to 0.4 percent; 0.2 to 0.5 percent of manganese; 0.1 to 0.6 percent of titanium; 0.1 to 0.4 percent of rare earth element, wherein the rare earth element is one or more of lanthanum, cerium, yttrium and ytterbium; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.1 percent; tin is less than or equal to 0.1 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum. Optionally, the aluminum-silicon alloy further comprises strontium in the above-mentioned weight percentage content.
Further, in some examples, the aluminum-silicon alloy includes the following elemental compositions in weight percent: 9 to 11 percent of silicon; 0.2 to 0.9 percent of magnesium; iron is less than or equal to 0.2 percent; 0.2 to 0.5 percent of manganese; 0.2 to 0.4 percent of titanium; 0.1 to 0.2 percent of rare earth element, wherein the rare earth element is one or more of lanthanum, cerium, yttrium and ytterbium; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum. Optionally, the aluminum-silicon alloy further comprises strontium in the above-mentioned weight percentage content.
The aluminum-silicon alloy disclosed by the invention takes aluminum as a matrix, takes Si and Mg as main alloy elements, controls the content of the main alloy elements to be specific, maintains the content of iron in a lower content range, simultaneously adds a manganese element, a titanium element and a rare earth element with lower content, controls the copper element, the zinc element, the nickel element, the lead element and the tin element to be in a proper proportion range, and simultaneously can add a strontium element with certain content, so that the aluminum-silicon alloy is strengthened to ensure the mechanical property of the aluminum-silicon alloy, simultaneously improves the corrosion resistance of the aluminum-silicon alloy and reduces the hot cracking tendency of the aluminum-silicon alloy, and further the aluminum-silicon alloy has excellent corrosion resistance on the basis of not influencing the mechanical property, so that the aluminum-silicon alloy does not need to be sprayed and protected in products, and achieves the effect of avoiding spraying treatment of aluminum-silicon alloy castings.
According to the aluminum-silicon alloy provided by the invention, the aluminum alloy is strengthened by regulating and controlling various elements such as silicon, magnesium, iron, manganese, titanium, rare earth, copper, strontium and the like in the aluminum-silicon alloy and replacing the copper element with the magnesium element; meanwhile, the low copper content is kept, and the corrosion resistance of the aluminum alloy is favorably improved. In addition, the low content of iron and zinc elements is beneficial to improving the corrosion resistance of the aluminum alloy. Generally speaking, the larger the solidification temperature range of the alloy is, the greater the hot cracking and solidification shrinkage tendencies are, and the aluminum-silicon alloy provided by the invention contains low content of alloy elements such as copper, zinc and the like which are easy to form eutectic with low melting point, so that the solidification temperature range is narrower than that of the traditional aluminum alloys such as YL112, YL113, ADC12 and the like, and the aluminum-silicon alloy has relatively lower hot cracking and solidification shrinkage tendencies. The invention also introduces titanium, low-content rare earth elements and strontium elements, realizes the grain refinement, grain boundary purification and good modification of the aluminum alloy, the grain refinement can improve the strength performance of the aluminum alloy, the grain boundary purification is beneficial to the improvement of the corrosion resistance of the aluminum alloy, the strontium element is used as the long-acting modifier of the aluminum alloy, and the addition of a small amount of the strontium element is beneficial to the improvement of the alloy performance. The iron element and the rare earth element are controlled in a lower range, the cost of raw materials can be reduced, meanwhile, the aluminum-silicon alloy shows excellent corrosion resistance, the prepared aluminum-silicon alloy casting does not need spraying protection treatment, the spraying protection treatment cost is saved, and finally, the aluminum-silicon alloy with low cost, excellent mechanical property and corrosion resistance is obtained.
The invention also provides a preparation method of the aluminum-silicon alloy. The preparation method comprises the following steps of S10-S20:
step S10: preparing raw materials according to the weight percentage of each element component of the aluminum-silicon alloy to be prepared.
In some of these embodiments, the feedstock may include aluminum ingots, aluminum magnesium, aluminum silicon, aluminum iron, aluminum manganese, aluminum rare earth, aluminum strontium, aluminum titanium master alloys. Or recovered aluminum ingot, magnesium ingot, iron filings or iron agent, aluminum manganese, aluminum rare earth, aluminum strontium, aluminum titanium intermediate alloy. This is merely an example, and not a limitation, as long as the feedstock is capable of meeting the elemental composition requirements.
Step S20: after the raw materials are smelted, casting and molding are carried out.
In some of these embodiments, the casting methods include, but are not limited to, pressure casting, squeeze casting, low pressure casting, gravity casting, counter pressure casting, vacuum die casting, and semi-solid casting.
In some of these embodiments, the step of cast molding is molding in a casting mold.
The preparation method of the aluminum-silicon alloy further comprises the operations of conventional impurity removal, degassing and the like.
In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the following specific embodiments, but the present invention is by no means limited to these embodiments. The following described examples are only preferred embodiments of the present invention, which can be used to describe the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In order to better illustrate the invention, the following examples are given to further illustrate the invention. The following are specific examples.
Example 1
The aluminum-silicon alloy comprises the following components in percentage by weight: 10.3% of silicon; 0.36 percent of magnesium; 0.15 percent of iron; 0.30 percent of manganese; 0.23 percent of titanium; 0.016 percent of strontium; 0.15 percent of rare earth, wherein the weight ratio of La and Ce elements in the rare earth respectively accounts for 50 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding an aluminum ingot into a smelting furnace, adding aluminum magnesium, aluminum silicon, aluminum iron, aluminum manganese, aluminum strontium, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components, and preparing an aluminum-silicon alloy casting by using an extrusion casting machine after the components are qualified.
Example 2
The aluminum-silicon alloy comprises the following components in percentage by weight: 9.2% of silicon; 0.28 percent of magnesium; 0.08 percent of iron; 0.23 percent of manganese; 0.33 percent of titanium; 0.016 percent of strontium; 0.20 percent of rare earth, wherein the weight ratio of La and Ce elements in the rare earth respectively accounts for 50 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding an aluminum ingot into a smelting furnace, adding aluminum magnesium, aluminum silicon, aluminum iron, aluminum manganese, aluminum strontium, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components, and preparing an aluminum-silicon alloy casting by using a pressure casting machine after the components are qualified.
Example 3
The aluminum-silicon alloy comprises the following components in percentage by weight: 10.8% of silicon; 0.82 percent of magnesium; 0.18 percent of iron; 0.42 percent of manganese; 0.20 percent of titanium; 0.17 percent of rare earth, wherein the weight ratio of Y and Ce elements in the rare earth respectively accounts for 50 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component proportion, adding an aluminum ingot into a smelting furnace, adding a magnesium ingot, aluminum silicon, scrap iron, aluminum manganese, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components and preparing an aluminum-silicon alloy casting by using a pressure casting machine after the components are qualified.
Example 4
The aluminum-silicon alloy comprises the following components in percentage by weight: 8.1% of silicon; 1.0% of magnesium; 0.38% of iron; 0.37 percent of manganese; 0.52 percent of titanium; 0.36 percent of rare earth, wherein the weight ratio of Y and Ce elements in the rare earth respectively accounts for 50 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.1 percent; tin is less than or equal to 0.1 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component proportion, adding an aluminum ingot into a smelting furnace, adding a magnesium ingot, aluminum silicon, scrap iron, aluminum manganese, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components and preparing an aluminum-silicon alloy casting by using a pressure casting machine after the components are qualified.
Example 5
The aluminum-silicon alloy comprises the following components in percentage by weight: 13.8% of silicon; 0.13 percent of magnesium; 0.09% of iron; 0.5 percent of manganese; 0.11 percent of titanium; 0.13 percent of rare earth, wherein the weight ratio of La and Ce elements in the rare earth respectively accounts for 50 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.1 percent; tin is less than or equal to 0.1 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding an aluminum ingot into a smelting furnace, adding a magnesium ingot, aluminum silicon, aluminum iron, aluminum manganese, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components, and preparing an aluminum-silicon alloy casting by using a pressure casting machine after the components are qualified.
Example 6
Example 6 is basically the same as example 1 except that Sr element is not added to the aluminum-silicon alloy.
Example 7
Example 7 is substantially the same as example 6 except that the kinds of rare earth elements are replaced by the same total content and the content ratio is 1: 1 Ce and Yb elements.
Example 8
Example 8 is substantially the same as example 6 except that the total content of the rare earth elements is the same and the content ratio is 1: 2 La and Ce. Comparative example 1
Taking A380 as a comparative example, the A380 aluminum-silicon alloy comprises the following components in percentage by weight: 7.5 to 9.0 percent of silicon; magnesium is less than or equal to 0.1 percent; iron is less than or equal to 1.3 percent; manganese is less than or equal to 0.5 percent; 3.0 to 4.0 percent of copper; zinc is less than or equal to 3.0 percent; nickel is less than or equal to 0.5 percent; tin is less than or equal to 0.35 percent. The die-casting aluminum-silicon alloy part is prepared by adopting a pressure casting method.
Comparative example 2
Taking YL113 as a comparative example, the YL113 aluminum-silicon alloy comprises the following components in percentage by weight: 9.5 to 11.5 percent of silicon; magnesium is less than or equal to 0.1 percent; iron is less than or equal to 1.3 percent; manganese is less than or equal to 0.5 percent; 2.0 to 3.0 percent of copper; zinc is less than or equal to 3.0 percent; nickel is less than or equal to 0.3 percent; tin is less than or equal to 0.35 percent. The die-casting aluminum-silicon alloy part is prepared by adopting a pressure casting method.
Comparative example 3
The aluminum-silicon alloy contains 7.3 percent of silicon by weight percent; 0.42 percent of magnesium; 0.09% of iron; manganese is less than or equal to 0.01 percent; 0.12 percent of titanium; 0.08 percent of rare earth, wherein the weight ratio of La and Ce elements in the rare earth respectively accounts for 50 percent; 0.92% of copper; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding an aluminum ingot into a smelting furnace, adding aluminum magnesium, aluminum silicon, aluminum iron, aluminum rare earth and aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components, and preparing an aluminum-silicon alloy casting by using a pressure casting machine after the components are qualified.
Comparative example 4
The aluminum-silicon alloy comprises the following components in percentage by weight: 6.5 percent of silicon; 0.15 percent of magnesium; 0.10 percent of iron; 0.08 percent of manganese; 0.11 percent of titanium; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding an aluminum ingot into a smelting furnace, adding an aluminum magnesium intermediate alloy, an aluminum silicon intermediate alloy, an aluminum iron intermediate alloy, an aluminum manganese intermediate alloy and an aluminum titanium intermediate alloy after the aluminum ingot is melted, smelting, refining, degassing, detecting components, and preparing an aluminum alloy casting by adopting a low-pressure casting method after the components are qualified.
Comparative example 5
An aluminum alloy comprises the following components in percentage by weight: 9.3 percent of silicon; 0.22 percent of magnesium; 0.24 percent of iron; 0.46 percent of manganese; titanium is less than or equal to 0.01 percent; copper is less than or equal to 0.1 percent; zinc is less than or equal to 0.1 percent; nickel is less than or equal to 0.1 percent; lead is less than or equal to 0.05 percent; tin is less than or equal to 0.05 percent; the total content of inevitable impurities is less than or equal to 0.15 percent, and the balance is aluminum.
According to the component ratio, adding aluminum ingots into a smelting furnace, adding aluminum magnesium, aluminum silicon, aluminum iron and aluminum manganese intermediate alloy after the aluminum ingots are melted, smelting, refining, degassing, detecting components, and preparing aluminum alloy castings by adopting a pressure casting method after the components are qualified.
The compositions of some of the elements of the examples and comparative examples are shown in table 1 below in units of: wt%.
TABLE 1
The aluminum-silicon alloy castings prepared in the embodiments and the various proportions are subjected to tensile strength, elongation and corrosion resistance tests.
Wherein the test conditions and test standards for tensile strength, elongation are in accordance with GB/T228.1.
The test conditions and test standards for corrosion resistance are in compliance with GB/T10125 and GB/T13298.
The performance data of the various examples and the aluminum-silicon alloys produced in the various comparative examples are compared and shown in table 2.
TABLE 2
The performance data of the aluminum-silicon alloys prepared in the examples and the comparative examples show that the aluminum-silicon alloys prepared in the examples have excellent mechanical properties such as tensile strength and elongation compared with the comparative examples, and the corrosion resistance of the aluminum-silicon alloys is greatly improved on the basis of basically not influencing the mechanical properties. The tensile strength and the elongation rate of some embodiments of the invention are obviously improved, so that the silicon-aluminum alloy prepared by the invention has the advantages of high strength and toughness while obtaining higher corrosion resistance.
By comparing the comparative examples 3 and 4 with the examples, it can be shown that the control of the content of Cu element in the invention is beneficial to improving the corrosion resistance of the aluminum alloy.
By comparing the embodiment 2 with the comparative examples 1 and 2, the corrosion problem of the aluminum alloy can be obviously improved by controlling the contents of Cu and Zn elements, the corrosion resistance of the aluminum-silicon alloy can be improved, and the elongation of the aluminum alloy can be improved by controlling the content of Fe element.
By comparing the example 2 with the comparative examples 4 and 5, the mechanical property of the aluminum alloy can be obviously improved by adding a certain amount of RE and Ti elements.
As can be seen from the comparison between examples 1 to 3 and examples 4 to 5, the elongation of the aluminum-silicon alloy obtained in example 4 is inferior, and the tensile strength of the aluminum-silicon alloy obtained in example 5 is inferior; the aluminum-silicon alloys obtained in examples 1 to 3 are excellent in tensile strength, elongation and corrosion resistance, and thus examples 1 to 3 are preferred examples.
It can be seen from comparison between example 1 and example 6 that the mechanical properties of the aluminum-silicon alloy can be significantly improved by adding a certain amount of strontium element in the present invention.
As can be seen from the comparison between examples 7 to 8 and example 6, the types of rare earth elements are preferably lanthanum and cerium or yttrium and cerium, and the ratio of the two is 1: (1-2) is more preferable. From the cost consideration, the lanthanum and cerium elements have relatively low cost advantage in rare earth elements, and the addition of the elements is also beneficial to reducing the material cost of the aluminum-silicon alloy.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the patent of the invention is subject to the appended claims, and the description can be used for explaining the contents of the claims.
Claims (12)
1. The aluminum-silicon alloy is characterized by comprising the following element components in percentage by weight:
8 to 14 percent of silicon, 0.1 to 1.1 percent of magnesium, less than or equal to 0.4 percent of iron, 0.1 to 0.5 percent of manganese, 0.1 to 0.6 percent of titanium, 0.01 to 0.4 percent of rare earth elements, less than or equal to 0.2 percent of copper, less than or equal to 0.2 percent of zinc, less than or equal to 0.2 percent of nickel, less than or equal to 0.2 percent of lead, less than or equal to 0.2 percent of tin and the balance of aluminum.
2. The aluminum-silicon alloy according to claim 1, wherein, in the aluminum-silicon alloy, in terms of weight percent content,
the silicon accounts for 9 to 11 percent; and/or
The magnesium accounts for 0.2 to 1.0 percent; and/or
The iron content is less than or equal to 0.2 percent; and/or
The manganese accounts for 0.2 to 0.5 percent; and/or
The titanium accounts for 0.1 to 0.4 percent; and/or
The rare earth element is 0.05-0.2%.
3. The aluminum-silicon alloy according to any one of claims 1 to 2, further comprising, in weight percent: 0.005-0.2 percent of strontium.
4. The aluminum-silicon alloy according to claim 3, wherein the strontium is present in the aluminum-silicon alloy in an amount of 0.01 to 0.03% by weight.
5. The aluminum-silicon alloy according to any one of claims 1 to 2 and 4, wherein the rare earth element is contained in the aluminum-silicon alloy in an amount of 0.1 to 0.2% by weight.
6. The aluminum-silicon alloy according to any one of claims 1 to 2 and 4, wherein the rare earth element is at least one selected from lanthanum, cerium, yttrium and ytterbium.
7. The aluminum-silicon alloy according to claim 6, wherein the rare earth element is lanthanum and cerium, or yttrium and cerium.
8. The aluminum-silicon alloy according to claim 7, wherein the rare earth element is present in a mass ratio of 1: (1-2) lanthanum and cerium, or the mass ratio of lanthanum to cerium is 1: (1-2) yttrium and cerium.
9. The aluminum-silicon alloy according to any one of claims 1 to 2, 4 and 6 to 7, wherein the copper is 0.1% or less in the aluminum-silicon alloy in terms of weight percent; and/or
The zinc content is less than or equal to 0.1 percent; and/or
The nickel content is less than or equal to 0.1 percent; and/or
The lead is less than or equal to 0.1 percent; and/or
The tin content is less than or equal to 0.1 percent.
10. The aluminum-silicon alloy according to any one of claims 1 to 2, 4 and 6 to 7, wherein the total unavoidable impurities content in the aluminum-silicon alloy is less than or equal to 0.15% by weight.
11. An aluminium-silicon alloy casting, characterised in that the material is an aluminium-silicon alloy according to any one of claims 1 to 10.
12. The preparation method of the aluminum-silicon alloy casting is characterized by comprising the following steps of:
providing a starting material in accordance with the elemental composition of the aluminium-silicon alloy as claimed in any one of claims 1 to 10;
and after smelting the raw materials, casting and forming.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114438378A (en) * | 2022-01-14 | 2022-05-06 | 大连理工大学宁波研究院 | New energy automobile integrated molding aluminum-silicon alloy and preparation method thereof |
| CN114717453A (en) * | 2022-06-09 | 2022-07-08 | 中国航发北京航空材料研究院 | High-toughness cast aluminum-silicon alloy and preparation method thereof |
| CN115198150A (en) * | 2022-06-24 | 2022-10-18 | 一汽解放汽车有限公司 | Aluminum-silicon alloy and preparation method and application thereof |
| CN115961186A (en) * | 2022-11-11 | 2023-04-14 | 蔚来动力科技(合肥)有限公司 | Die-casting aluminum alloy material and preparation method and application thereof |
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| CN105463269A (en) * | 2015-12-01 | 2016-04-06 | 上海交通大学 | High-strength and high-corrosion-resistance cast aluminum alloy and pressure casting preparation method thereof |
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| CN105463269A (en) * | 2015-12-01 | 2016-04-06 | 上海交通大学 | High-strength and high-corrosion-resistance cast aluminum alloy and pressure casting preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114438378A (en) * | 2022-01-14 | 2022-05-06 | 大连理工大学宁波研究院 | New energy automobile integrated molding aluminum-silicon alloy and preparation method thereof |
| CN114717453A (en) * | 2022-06-09 | 2022-07-08 | 中国航发北京航空材料研究院 | High-toughness cast aluminum-silicon alloy and preparation method thereof |
| CN114717453B (en) * | 2022-06-09 | 2022-08-30 | 中国航发北京航空材料研究院 | High-toughness cast aluminum-silicon alloy and preparation method thereof |
| CN115198150A (en) * | 2022-06-24 | 2022-10-18 | 一汽解放汽车有限公司 | Aluminum-silicon alloy and preparation method and application thereof |
| CN115198150B (en) * | 2022-06-24 | 2023-10-13 | 一汽解放汽车有限公司 | Aluminium-silicon alloy and its preparation method and application |
| CN115961186A (en) * | 2022-11-11 | 2023-04-14 | 蔚来动力科技(合肥)有限公司 | Die-casting aluminum alloy material and preparation method and application thereof |
| CN116287889A (en) * | 2023-03-07 | 2023-06-23 | 帅翼驰新材料集团有限公司 | Manufacturing method of high-pressure casting aluminum alloy for battery tray |
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Application publication date: 20220111 |