EP1978120A1 - Alliage de fonte, d'aluminium et de silice et son procédé de fabrication - Google Patents
Alliage de fonte, d'aluminium et de silice et son procédé de fabrication Download PDFInfo
- Publication number
- EP1978120A1 EP1978120A1 EP08075254A EP08075254A EP1978120A1 EP 1978120 A1 EP1978120 A1 EP 1978120A1 EP 08075254 A EP08075254 A EP 08075254A EP 08075254 A EP08075254 A EP 08075254A EP 1978120 A1 EP1978120 A1 EP 1978120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum
- carbon
- alloy
- silicon
- weight
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 78
- 239000000956 alloy Substances 0.000 claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 45
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 239000010703 silicon Substances 0.000 claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 17
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 12
- 230000005496 eutectics Effects 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 239000000470 constituent Substances 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000000155 melt Substances 0.000 claims abstract description 8
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 5
- -1 aluminum-titanium-carbon Chemical compound 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 37
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- 239000011777 magnesium Substances 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052706 scandium Inorganic materials 0.000 claims description 5
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 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 description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 150000001722 carbon compounds Chemical class 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052738 indium Inorganic materials 0.000 claims 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 22
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 238000007670 refining Methods 0.000 description 14
- 229910018125 Al-Si Inorganic materials 0.000 description 12
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 12
- 229910018520 Al—Si Inorganic materials 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000007792 addition Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 238000004512 die casting Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000930 thermomechanical effect Effects 0.000 description 2
- 229910018575 Al—Ti Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001669 calcium Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010115 full-mold casting Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000051 modifying effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
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- 230000000007 visual effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
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
-
- 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
- C22C21/04—Modified aluminium-silicon alloys
Definitions
- the invention relates to high and heat resistant silicon-containing aluminum casting alloys, their production and their use for the production of engine components.
- Al casting alloys are known. Al castings are widely used because of their low specific weight, ease of molding and ease of processing. Also, through various casting methods, complicated workpieces such as e.g. Make pistons, cylinder heads, crankcases or engine blocks.
- Al-Si alloys A proven alloy group for the production of engine components are Al-Si alloys. These materials are typically with silicon contents between 6 and 18 wt .-%, in some cases up to 24 wt .-% and with admixtures of magnesium from 1 to 1.5 wt .-%, copper between 1 and 4 wt .-% and often nickel between 1 to 3 wt .-% alloyed (catalog "aluminum casting alloys", VAW-IMCO).
- a heat resistant alloy with reduced specific gravity is used in the DE-PS 747 355 described as particularly advantageous for pistons.
- This material is characterized by a magnesium content between 4 and 12 wt.% And a silicon content between 0.5 and 5 wt .-% of. Furthermore, between 0.2 and 5 wt .-% copper and / or nickel may be alloyed.
- the high magnesium content leads to gas porosity due to the strong hydrogen absorption. The additional oxidation also involves the risk of oxide inclusions, which significantly degrade the mechanical properties of the casting.
- the invention has for its object to provide a suitable alloy for the production of engine components, which has high strength, heat resistance, good creep strength and sufficient ductility with low susceptibility to corrosion and is also inexpensive.
- This object is inventively by the selective adjustment of carbon in the Al-Si alloys in effective amounts of from 0.0007 to 0.1 wt .-%, preferably from 0.0007 to 0.05 wt .-%, more preferably 0.001 to 0.05 wt .-%, more preferably 0.001 to 0.01 wt .-%, more preferably 0.001 to 0.005 wt .-% dissolved.
- the aluminum-silicon casting alloy contains 5 to 18 wt .-%, in particular 12.5 to 14.5 wt .-% silicon.
- the aluminum-silicon casting alloy according to the invention is preferably characterized by the fact that in its microstructure fine primary silicon (less than 50 ⁇ m) and refined eutectic are present simultaneously, as can be seen from the micrograph. This condition is particularly desirable in near and hypereutectic Al-Si alloys.
- the degree of finishing of the eutectic can be visually assessed by the foundry expert on the basis of the forms of formation of the eutectic silicon precipitates, for example with the aid of micrographs.
- foundry practice No. 11/12 - 1993, page 206 - 209, G. Chai, L. Bifferud, "Effective refining with strontium”.
- the modifying effect of the carbon on microstructures and properties of the Al-Si alloys was not known until the invention. It has been found that the carbon content according to the invention causes a change in the overall solidification behavior of the Al-Si casting alloys and brings about an excellent microstructure modification. As essential features of the structure modification by carbon are a considerable refining and homogeneous distribution of the intermetallic phases, a good refinement of the Al-Si eutectic and good refining of the primary silicon crystals. This results in a significant improvement of the mechanical and casting technology properties.
- the melt shows a significantly improved mold filling and flow behavior, and the finished castings can be a significantly increased casting quality and in particular a significantly lower gas porosity can be detected.
- the basic constituents selected for the composition are melted together.
- the melting temperature is preferably from 650 ° C to 1000 ° C, more preferably from 720 ° C to 950 ° C. Then it is poured into a mold. "Melted together” also covers the gradual metering of all components into a common melt.
- Carbon can be used as elemental carbon, e.g. Graphite, but also be added in the form of a compound or master alloy.
- the carbon content is achieved in particular by adding chemical carbon compounds and / or their mixtures. This can also be done by adding powdered carbides and carbonitrides, also in the form of a sintered product of carbides and carbonitrides.
- a carbonaceous aluminum master alloy may be incorporated into the melt from the remainder of the alloyed ingredients or may be added in advance to the components to be melted.
- the carbonaceous additives can contain not only carbon but also phosphorus and / or nitrogen.
- a particularly preferred method of this invention is to use an aluminum-titanium-carbon master alloy.
- castings produced from the alloy according to the invention can be subjected to all heat treatments.
- the aluminum-silicon casting alloys according to the invention are particularly suitable for casting pistons and other machine parts for internal combustion engines, for cylinder heads, crankcases, liners or engine blocks.
- the solution of the object of the invention therefore also includes these uses.
- the AlSi12CuNiMg secondary alloy was selected as a representative of the large group of Al-Si casting alloys.
- the experimental alloy was in cylindrical specimens with a casting temperature of 780 ° C in a reduced to 300 ° C. heated steel mold. Carbon was added using the self-made Al-Ti-C master alloy.
- a medium-frequency induction furnace was used to produce the AlTi6C1 master alloy.
- 2000 g of AlTi6 master alloy were first melted at 1400 ° C in a graphite crucible. To this melt was added 30 grams of graphite powder wrapped in aluminum foil.
- the casting of the Al-Ti-C prealloy thus prepared was carried out after a holding time of about 30 in a copper mold.
- the master alloy consists of an aluminum matrix, in which Al 3 Ti and TiC particles are embedded.
- Table 1 shows the composition of the alloys investigated. ⁇ u> Table 1. ⁇ / u> Composition of Al-Si Cast Refining,% by Weight Si C Cu Ni mg Fe Mn Cr Ti Zn Erfg. Leg. 1 12.4 0,003 1.3 0.8 1.4 1.2 0.3 0.15 0.07 0.3 Vergl.Leg. 2 12.6 - 1.5 0.9 1.6 1.3 0.4 0.13 0.05 0.4
- the secondary alloy AlSi12CuNiMg has very coarse needle-shaped iron-containing phases (predominantly Al5FeSi needles) in the cast structure, Fig. 1 .
- alloying with the carbon causes both a well-refined eutectic and precipitates of small intermetallic phases in a very uniform distribution, Fig. 2 ,
- a hypereutectic Al-Si casting alloy was compared to the alloy of the invention having an approximately similar composition, Table 3. Both alloys were treated with an equal amount of phosphorus.
- Table 3 ⁇ / u> Composition of hypereutectic Al-Si casting alloys, wt% Si Cu C mg Fe Mn Ti Zn P Erfg. Leg. 3 14.1 3.7 0.02 0.33 0.94 0.29 0.21 0.33 0,006 Comp. Leg. 4 14.6 4.1 - 0.32 0.73 0.28 0.22 0.35 0,006
- the alloy 5 according to the invention has a good strength for a casting alloy, as results from the above-mentioned tabular data.
- the alloy 5 according to the invention has a significantly better heat resistance than the comparative alloy 6, the R p0.2 value of which drops sharply at 250 ° C. after a preliminary storage at 250 ° C. when the mechanical properties are measured at 250 ° C.
- heat-resistant we mean here an alloy whose R p0.2 value after storage at 250 ° C. for at least 50 h, tested at 250 ° C., is above 55 MPa.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007015821 | 2007-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1978120A1 true EP1978120A1 (fr) | 2008-10-08 |
| EP1978120B1 EP1978120B1 (fr) | 2012-06-06 |
Family
ID=39629126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20080075254 Not-in-force EP1978120B1 (fr) | 2007-03-30 | 2008-03-31 | Alliage de fonte, d'aluminium et de silice et son procédé de fabrication |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1978120B1 (fr) |
Cited By (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010057702A3 (fr) * | 2008-11-19 | 2010-09-10 | Robert Bosch Gmbh | Pompe à carburant |
| EP2236637A2 (fr) | 2009-04-03 | 2010-10-06 | Technische Universität Clausthal | Corps coulé sous pression en alliage d'aluminium-silicium-fonte hypereutectrique et son procédé de fabrication |
| FR2950632A1 (fr) * | 2009-09-28 | 2011-04-01 | Peugeot Citroen Automobiles Sa | Alliages d'aluminium destines a la fonderie sous pression |
| CN102146542A (zh) * | 2011-03-26 | 2011-08-10 | 河南理工大学 | 一种高强高韧铸造Al-Si-Mg合金 |
| CN102433475A (zh) * | 2011-12-15 | 2012-05-02 | 贵州华科铝材料工程技术研究有限公司 | 一种高强高硬铝合金及其制备方法 |
| CN102433473A (zh) * | 2011-12-15 | 2012-05-02 | 贵州华科铝材料工程技术研究有限公司 | 掺杂WB及NaBH4的高强度铝合金及其制备方法 |
| CN102560206A (zh) * | 2012-02-27 | 2012-07-11 | 安徽省恒泰动力科技有限公司 | 一种稀土铝合金活塞材料及其制备方法 |
| CN102644012A (zh) * | 2012-05-17 | 2012-08-22 | 天津立中合金集团有限公司 | 共晶铝硅合金活塞材料的制备方法 |
| WO2012110788A3 (fr) * | 2011-02-18 | 2012-10-26 | Brunel University | Procédé d'affinage d'alliages métalliques |
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| DE102021131973A1 (de) | 2021-12-03 | 2023-06-07 | Audi Aktiengesellschaft | Aluminium-Druckgusslegierung |
| DE102021131935A1 (de) | 2021-12-03 | 2023-06-07 | Audi Aktiengesellschaft | Aluminium-Druckgusslegierung |
| WO2023099080A1 (fr) | 2021-12-03 | 2023-06-08 | Audi Ag | Alliage d'aluminium pour coulée sous pression |
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| CN115522103B (zh) * | 2022-10-31 | 2023-06-16 | 合肥工业大学 | 一种用于亚共晶铝硅合金的新型细化变质剂及其制备与应用方法 |
| DE102023106915A1 (de) | 2023-03-20 | 2024-09-26 | Federal-Mogul Nürnberg GmbH | Verfahren zur Herstellung einer Bremsscheibe, Bremsscheibe und Verwendung einer Aluminiumlegierung zur Herstellung einer Bremsscheibe |
| CN117210729A (zh) * | 2023-08-15 | 2023-12-12 | 帅翼驰新材料集团有限公司 | 用于制作电池托盘的免热处理的铸造铝合金 |
| CN117286374A (zh) * | 2023-09-27 | 2023-12-26 | 广东腐蚀科学与技术创新研究院 | 一种耐热共晶Al-Si合金材料及其制备方法 |
| EP4575025A1 (fr) | 2023-12-22 | 2025-06-25 | Fundación Tecnalia Research & Innovation | Alliage de coulée d'aluminium à plusieurs composants |
| CN120905551A (zh) * | 2025-09-02 | 2025-11-07 | 四会市润德铝业有限公司 | 一种耐腐蚀铝合金锭及其制备方法 |
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