CA2556645C - High temperature aluminium alloy - Google Patents
High temperature aluminium alloy Download PDFInfo
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- CA2556645C CA2556645C CA2556645A CA2556645A CA2556645C CA 2556645 C CA2556645 C CA 2556645C CA 2556645 A CA2556645 A CA 2556645A CA 2556645 A CA2556645 A CA 2556645A CA 2556645 C CA2556645 C CA 2556645C
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- aluminium
- die casting
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 239000011777 magnesium Substances 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011572 manganese Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000004512 die casting Methods 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005275 alloying Methods 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 5
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010941 cobalt Substances 0.000 claims abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011701 zinc Substances 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000007528 sand casting Methods 0.000 claims description 4
- 239000000306 component Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 206010037660 Pyrexia Diseases 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910019752 Mg2Si Inorganic materials 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010117 thixocasting Methods 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- 229910000521 B alloy Inorganic materials 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010118 rheocasting Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000009716 squeeze casting Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 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
- C22C21/06—Alloys based on aluminium with magnesium 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Continuous Casting (AREA)
- Mold Materials And Core Materials (AREA)
- Body Structure For Vehicles (AREA)
- Cookers (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Secondary Cells (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
In an aluminium alloy of type AlMgSi with good creep strength at elevated temperatures for the production of castings subject to high thermal and mechanical stresses the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,7] [8.5; 4,7] [6.3; 2,7]
[6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium remainder rest with further elements and manufacturing -related impurities of individually max. 0.05% w/w and max. 0.2% w/w in total.
The alloy is suitable in particu lar for the production of cylinder crankcases by the pressure die casting method.
[6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium remainder rest with further elements and manufacturing -related impurities of individually max. 0.05% w/w and max. 0.2% w/w in total.
The alloy is suitable in particu lar for the production of cylinder crankcases by the pressure die casting method.
Description
ak 02556645 2006-08-21 HIGH TEMPERATURE ALUMINIUM ALLOY
The invention relates to an aluminium alloy of type AlMgSi with good creep strength at elevated tempera tures for the production of castings subject to high thermal and mechanical stresses.
The further development of die sel engines with the aim of achieving an improved combustion of the diesel fuel and a higher specific output leads inter alia to a higher explosion pressure and in consequence to a pulsating mechanical load acting on the cylinder crank-case that makes very high demands on the material.
Apart from a high fatigue strength, a good endurance strength at high temperatures of the material is a further precondition for its use in the production of cylinder crankcases.
AlSi alloys are generally used today for comp onents subject to high thermal stresses, this high -temperature strength being achieved by the addition of Cu to the =
alloy. Copper does, however, also increase the hot shortness and has a negative effect on the castability.
Applications in which in particul ar high -temperature strength is demanded are primarily found in the area of the cylinder heads of automotive engines, see e.g. F.J.
Feikus, "Optimierung von Aluminium -Silicium-Gussiegierungen ftir Zylinderkopfe" [Optimization of Aluminium-Silicon Casting Al loys for Cylinder Heads], Giesserei-Praxis, 1999, Volume 2, pp. 50-57.
A high-temperature AlMgSi alloy for the production of cylinder heads is known from US -A-3 868 250. The alloy contains, apart from the normal additives, 0.6 to 4.5%
w/w Si, 2.5 to 11% w/w Mg, of which 1 to 4.5% w/w free Mg, and 0.6 to 1.8% w/w Mn.
ak 02556645 2006-08-21 WO-A-96 15281 describes an aluminium alloy with 3.0 to 6.0% w/w Mg, 1.4 to 3.5% w/w Si, 0.5 to 2.0% w/w Mn, max. 0.15% w/w Fe, max. 0.2% w/w Ti and aluminium as remainder with further impuriti es of individually max.
0.02% w/w, and max. 0.2% w/w in total. The alloy is suitable for the production of components where high demands are made on the mechanical properties. Process -ing of the alloy is preferably by pressure die casting, thixocasting or thixoforging.
A similar aluminium alloy for the production of safety components by pressure die casting, squeeze casting, thixoforming or thixoforging is known from WO -A-0043560. The alloy contains 2.5 - 7.0% w/w Mg, 1.0 3.0% w/w Si, 0.3 - 0.49% w/w Mn , 0.1 - 0.3% w/w Cr, max. 0.15% w/w Ti, max. 0.15% w/w Ti, max. 0.15% w/w Fe, max. 0.00005% w/w Ca, max. 0.00005% w/w Na, max.
0.0002 6 w/w P, further impurities of individually max.
0.02% w/w and aluminium as remainder.
A casting alloy of type AlMgSi know n from EP -A-1 234 893 contains 3.0 to 7.0% w/w Mg, 1.7 to 3.0% w/w Si, 0.2 to 0.48% w/w Mn, 0.15 to 0.35% w/w Fe, max.
0.2% w/w Ti, optionally also 0.1 to 0.4% w/w Ni and Al as remainder and manufacturing -related impurities of individually max. 0.02% w/w and max. 0.2% w/w in total, with the further condition that magnesium and silicon in the alloy essentially exist in a ratio Mg : Si of 1.7 : 1 by weight, corresponding to the composition of the quasi-binary eutectic with the solid phases Al and Mg2Si. The a lloy is suitable for the production of safety components in motor vehicles by pressure die casting, rheocasting and thixocasting.
The object of the invention is to provide an aluminium alloy with good creep strength at elevated temper atures for the produ ction of components subject to high thermal and mechanical stresses. The alloy should be suitable in particular for pressure die casting, but also for gravity die casting, low -pressure die casting and sand casting.
A specific object of the invention is th e provision of an aluminium alloy for cylinder crankcases of internal combustion engines, in particular of diesel engines, produced by pressure die casting.
The components cast from the alloy should exhibit high strength together with high ductility. The intended mechanical properties in the component are defined as follows:
Proof strength Rp0.2 > 170 MPa Tensile strength Rm > 230 MPa Elongation at break A5 > 6%
The castability of the alloy should be comparable with the castability of the AlSiCu casting alloys currently used, and the alloy should not show any tendency to hot shortness.
The object is achieved with the solution according to the invention in that the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,7] [8.5; 4,71 [6.3; 2,71 [6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder with further elements and manufacturing -related impurities of individually max. 0.05% w/w and max. 0.2% w/w in total.
The following content ranges are preferred for the main alloying elements, Mg and Si:
Mg 6.9 to 7.9% w/w, in particular 7.1 to 7.7% w/w Si 3.0 to 3.7% w/w, in particular 3.1 to 3.6% w/w Particularly preferred are alloys whose contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon B
with the coordinates [Mg; Si] [7.9; 3,0] [7.9; 3,7]
[6.9; 3,0] [6.9; 317], in particular by a polygon C
with the coordinates [Mg; Si ] [7.7; 3.1] [7.7; 3,6]
[7.1; 3,1] [7.1; 3,6].
The alloying elements Mn and Fe allow sticking of the castings to the mould to be avoided. A higher iron content results in a higher high -temperature strength at the expense of reduced elongation. Mn contribu tes also significantly to red hardness. Depending on the field of application, the alloying elements Fe and Mn are therefore preferably balanced with one another as follows:
With a content of 0.4 to 1% w/w Fe, in particular 0.5 to 0.7% w/w Fe, a content o f 0.1 to 0.5% w/w Mn, in particular 0.3 to 0.5% w/w Mn, is set.
With a content of max. 0.2% w/w Fe, in particular max.
0.15% w/w Fe, a content of 0.5 to 1% w/w Mn, in particular 0.5 to 0.8% w/w Mn, is set.
The following content ranges are preferred for t he further alloying elements:
The invention relates to an aluminium alloy of type AlMgSi with good creep strength at elevated tempera tures for the production of castings subject to high thermal and mechanical stresses.
The further development of die sel engines with the aim of achieving an improved combustion of the diesel fuel and a higher specific output leads inter alia to a higher explosion pressure and in consequence to a pulsating mechanical load acting on the cylinder crank-case that makes very high demands on the material.
Apart from a high fatigue strength, a good endurance strength at high temperatures of the material is a further precondition for its use in the production of cylinder crankcases.
AlSi alloys are generally used today for comp onents subject to high thermal stresses, this high -temperature strength being achieved by the addition of Cu to the =
alloy. Copper does, however, also increase the hot shortness and has a negative effect on the castability.
Applications in which in particul ar high -temperature strength is demanded are primarily found in the area of the cylinder heads of automotive engines, see e.g. F.J.
Feikus, "Optimierung von Aluminium -Silicium-Gussiegierungen ftir Zylinderkopfe" [Optimization of Aluminium-Silicon Casting Al loys for Cylinder Heads], Giesserei-Praxis, 1999, Volume 2, pp. 50-57.
A high-temperature AlMgSi alloy for the production of cylinder heads is known from US -A-3 868 250. The alloy contains, apart from the normal additives, 0.6 to 4.5%
w/w Si, 2.5 to 11% w/w Mg, of which 1 to 4.5% w/w free Mg, and 0.6 to 1.8% w/w Mn.
ak 02556645 2006-08-21 WO-A-96 15281 describes an aluminium alloy with 3.0 to 6.0% w/w Mg, 1.4 to 3.5% w/w Si, 0.5 to 2.0% w/w Mn, max. 0.15% w/w Fe, max. 0.2% w/w Ti and aluminium as remainder with further impuriti es of individually max.
0.02% w/w, and max. 0.2% w/w in total. The alloy is suitable for the production of components where high demands are made on the mechanical properties. Process -ing of the alloy is preferably by pressure die casting, thixocasting or thixoforging.
A similar aluminium alloy for the production of safety components by pressure die casting, squeeze casting, thixoforming or thixoforging is known from WO -A-0043560. The alloy contains 2.5 - 7.0% w/w Mg, 1.0 3.0% w/w Si, 0.3 - 0.49% w/w Mn , 0.1 - 0.3% w/w Cr, max. 0.15% w/w Ti, max. 0.15% w/w Ti, max. 0.15% w/w Fe, max. 0.00005% w/w Ca, max. 0.00005% w/w Na, max.
0.0002 6 w/w P, further impurities of individually max.
0.02% w/w and aluminium as remainder.
A casting alloy of type AlMgSi know n from EP -A-1 234 893 contains 3.0 to 7.0% w/w Mg, 1.7 to 3.0% w/w Si, 0.2 to 0.48% w/w Mn, 0.15 to 0.35% w/w Fe, max.
0.2% w/w Ti, optionally also 0.1 to 0.4% w/w Ni and Al as remainder and manufacturing -related impurities of individually max. 0.02% w/w and max. 0.2% w/w in total, with the further condition that magnesium and silicon in the alloy essentially exist in a ratio Mg : Si of 1.7 : 1 by weight, corresponding to the composition of the quasi-binary eutectic with the solid phases Al and Mg2Si. The a lloy is suitable for the production of safety components in motor vehicles by pressure die casting, rheocasting and thixocasting.
The object of the invention is to provide an aluminium alloy with good creep strength at elevated temper atures for the produ ction of components subject to high thermal and mechanical stresses. The alloy should be suitable in particular for pressure die casting, but also for gravity die casting, low -pressure die casting and sand casting.
A specific object of the invention is th e provision of an aluminium alloy for cylinder crankcases of internal combustion engines, in particular of diesel engines, produced by pressure die casting.
The components cast from the alloy should exhibit high strength together with high ductility. The intended mechanical properties in the component are defined as follows:
Proof strength Rp0.2 > 170 MPa Tensile strength Rm > 230 MPa Elongation at break A5 > 6%
The castability of the alloy should be comparable with the castability of the AlSiCu casting alloys currently used, and the alloy should not show any tendency to hot shortness.
The object is achieved with the solution according to the invention in that the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,7] [8.5; 4,71 [6.3; 2,71 [6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder with further elements and manufacturing -related impurities of individually max. 0.05% w/w and max. 0.2% w/w in total.
The following content ranges are preferred for the main alloying elements, Mg and Si:
Mg 6.9 to 7.9% w/w, in particular 7.1 to 7.7% w/w Si 3.0 to 3.7% w/w, in particular 3.1 to 3.6% w/w Particularly preferred are alloys whose contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon B
with the coordinates [Mg; Si] [7.9; 3,0] [7.9; 3,7]
[6.9; 3,0] [6.9; 317], in particular by a polygon C
with the coordinates [Mg; Si ] [7.7; 3.1] [7.7; 3,6]
[7.1; 3,1] [7.1; 3,6].
The alloying elements Mn and Fe allow sticking of the castings to the mould to be avoided. A higher iron content results in a higher high -temperature strength at the expense of reduced elongation. Mn contribu tes also significantly to red hardness. Depending on the field of application, the alloying elements Fe and Mn are therefore preferably balanced with one another as follows:
With a content of 0.4 to 1% w/w Fe, in particular 0.5 to 0.7% w/w Fe, a content o f 0.1 to 0.5% w/w Mn, in particular 0.3 to 0.5% w/w Mn, is set.
With a content of max. 0.2% w/w Fe, in particular max.
0.15% w/w Fe, a content of 0.5 to 1% w/w Mn, in particular 0.5 to 0.8% w/w Mn, is set.
The following content ranges are preferred for t he further alloying elements:
Cu 0.2 to 1.2% w/w, preferably 0.3 to 0.8% w/w, in particular 0.4 to 0.6% w/w Ni 0.8 to 1.2% w/w Cr max. 0.2% w/w, preferably max. 0.05% w/w Co 0.3 to 0.6% w/w Ti 0.05 to 0.15% w/w Fe max. 0.15% w/w Zr 0.1 to 0.4% w/w Copper results in an additional increase in strength, but with increasing contents leads to a deterioration in the corrosion behaviour of the alloy.
The addition of cobalt allows the demoulding behaviour of the alloy to be further improved.
Titanium and zirconium improve the grain refinement. A
good grain refinement contributes significantly to an improvement in the casting properties and mechanical properties.
Beryllium in combination with vanadium reduces the formation of dross. With an addition of 0.02 to 0 .15%
w/w V, preferably 0.02 to 0.08% w/w V, in particular 0.02 to 0.05% w/w V, less than 60 ppm Be are sufficient.
A preferred field of application of the aluminium alloy according to the invention is the production of components subject to high thermal a nd mechanical stresses by pressure die casting, mould casting or sand casting, in particular for cylinder crankcases for automotive engines produced by the pressure die casting method.
The alloy according to the invention also satisfies the mechanical pro perties demanded for structural compo nents in automotive construction after a single -stage heat treatment without separate solution annealing.
, - 5a -In accordacne with one aspect of the present invetion, there is provided a use of an aluminium alloy of type AlMgSi with good creep strength at elevated temperatures for the production of castings subject to high thermal and mechanical stresses, consisting of the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,71 [8.5; 4,7] [6.3; 2,7]
[6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder and manufacturing -related impurities of individually max. 0.05% w/w and max.
0.2% w/w in total, for components subject to high thermal and mechanical stresses produced by pressure die casting, mould casting or sand casting.
The addition of cobalt allows the demoulding behaviour of the alloy to be further improved.
Titanium and zirconium improve the grain refinement. A
good grain refinement contributes significantly to an improvement in the casting properties and mechanical properties.
Beryllium in combination with vanadium reduces the formation of dross. With an addition of 0.02 to 0 .15%
w/w V, preferably 0.02 to 0.08% w/w V, in particular 0.02 to 0.05% w/w V, less than 60 ppm Be are sufficient.
A preferred field of application of the aluminium alloy according to the invention is the production of components subject to high thermal a nd mechanical stresses by pressure die casting, mould casting or sand casting, in particular for cylinder crankcases for automotive engines produced by the pressure die casting method.
The alloy according to the invention also satisfies the mechanical pro perties demanded for structural compo nents in automotive construction after a single -stage heat treatment without separate solution annealing.
, - 5a -In accordacne with one aspect of the present invetion, there is provided a use of an aluminium alloy of type AlMgSi with good creep strength at elevated temperatures for the production of castings subject to high thermal and mechanical stresses, consisting of the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,71 [8.5; 4,7] [6.3; 2,7]
[6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder and manufacturing -related impurities of individually max. 0.05% w/w and max.
0.2% w/w in total, for components subject to high thermal and mechanical stresses produced by pressure die casting, mould casting or sand casting.
Further advantage, features and properties of the invention can be seen from the following description of preferred exemplary embodiments and from the drawing that shows in Fig. 1 a diagram with the content limits for the alloying elements Mg and Si The polygon A shown in Fig. 1 defines the content range for the alloying elements Mg and Si, the polygons 13 and C re fer to preferred ranges. The straight line E
corresponds to the composition of the quasi -binary eutectic Al -Mg2Si. The alloy compositions according to the invention thus lie on the side with an excess of magnesium.
The alloy according to the invention was cast into pressure die cast plates with different wall thicknesses. Tensile strength test specimens were manufactured from the pressure die cast plates. The mechanical properties proof strength (Rp0.2), tensile strength (Rm) and elongation at break (A) we re determined on the tensile strength test specimens in the conditions As cast Water/F As cast, quenched in water after demoulding F> 24 h As cast, > 24 h storage at room temperature Water/F > 24 As cast, quenched in water after demoulding, > 24 h storage at room temperature and after various single-stage heat treatment processes at temperatures in the range from 250 C to 380 C and after long-term storage at temperatures in the range from 150 C to 250 C.
The alloys examined are summarized in Table 1. The letter A indicates alloys with copper additive, the letter B alloys without copper additive.
corresponds to the composition of the quasi -binary eutectic Al -Mg2Si. The alloy compositions according to the invention thus lie on the side with an excess of magnesium.
The alloy according to the invention was cast into pressure die cast plates with different wall thicknesses. Tensile strength test specimens were manufactured from the pressure die cast plates. The mechanical properties proof strength (Rp0.2), tensile strength (Rm) and elongation at break (A) we re determined on the tensile strength test specimens in the conditions As cast Water/F As cast, quenched in water after demoulding F> 24 h As cast, > 24 h storage at room temperature Water/F > 24 As cast, quenched in water after demoulding, > 24 h storage at room temperature and after various single-stage heat treatment processes at temperatures in the range from 250 C to 380 C and after long-term storage at temperatures in the range from 150 C to 250 C.
The alloys examined are summarized in Table 1. The letter A indicates alloys with copper additive, the letter B alloys without copper additive.
Table 2 shows the results of the mechanical properties determined on tensile strength test specimens of the alloys in Table 1.
An alloy not included in Tables 1 and 2 with good creep strength at elevated temperatures exhibited the following composition (in % w/w):
3.4 Si, 0.6 Fe, 0.42 Cu, 0.32 Mn, 7.4 Mg, 0.07 Ti, 0.9 Ni, 0.024 V and 0.004 Be The results of the long -term tests underline the good creep strength at elevated temperatures of the alloy according to the invention. The mechanical properties after a single-stage heat treatment at 350 C and 380 C
for 90 minutes indicate furthermore that the alloy according to the invention also satisfies the demands made for structural components in automotive construction.
An alloy not included in Tables 1 and 2 with good creep strength at elevated temperatures exhibited the following composition (in % w/w):
3.4 Si, 0.6 Fe, 0.42 Cu, 0.32 Mn, 7.4 Mg, 0.07 Ti, 0.9 Ni, 0.024 V and 0.004 Be The results of the long -term tests underline the good creep strength at elevated temperatures of the alloy according to the invention. The mechanical properties after a single-stage heat treatment at 350 C and 380 C
for 90 minutes indicate furthermore that the alloy according to the invention also satisfies the demands made for structural components in automotive construction.
Table 1: Chemical composition of the alloys in % w/w ___________________________________________________________________ , Alloy Wall Si Fe Cu Mn Mg Ti V Be ' variant thickness of flat specimen 1 3mm 3.469 0.1138 0.787 7.396 0.106 0.0221 0.0025 1A 3 mm 3.4 0.117 0.527 0.781 7.151 0.119 0.0223 0.0019 2 2 mm 3.366 0.0936 0.774 7.246 0.117 0.0263 0.0024 2A 2 mm 3.251 0.0841 0.507 0.76 7.499 0.1 0.0246 0.0023 3 4 mnn 3.352 0.0917 0.774 7.221 0.118 0.026 0.0024 3A 4 mm 3.198 0.0848 0.522 0.747 7.351 0.101 0.0255 0.0023 4 6 mm 3.28 0.0921 0.766 7.024 0.119 0.0268 0.0024 4A 6 mm 3.181 0.862 0.535 0.745 7.273 0.1 0.0257 0.0023 Table 2: Mechanical properties of the alloys 1 __________________________________________ I i Alloy Initial state Heat treatment Rp0.2 Rm A5 I
variant [MPa] [MPa] [%]
F 210 359 8.6 Water/F 181 347 9.6 F>24 h 204 353 8.9 Water / F>24 h 176 347 13.4 250 C/10 min 216 352 7.4 I
=
250 C/20 min 218 352 6.8 250 C/90 min 207 349 10.8 _ 350 C/10 min 154 315 12.5 1 350 C/20 min 158 315 10.6 350 C/90 min 147 306 11.4 _ F>24 h 380 C/10 min 145 304 14.1 380 C/20 min 139 299 13.9 380 C/90 min 137 299 16.7 150 C/100 h 221 365 9.4 180 C/100 h 214 346 6 200 C/100 h 211 354 9.4 250 C/100 h 184 336 11.7 :
150 C/500 h 223 353 6 180 C/500 h 216 357 9.7 200 C/500 h 202 349 9.2 250 C/500 h 170 327 12.3 , 1A F 234 345 4.2 Water/F 170 319 4.9 F>24 h 205 355 7.1 Water / F>24 h 188 340 5.6 F>24 h 250 C/10 min 227 355 6.6 250 C/20 min 217 354 7.5 250 C/90 min 213 350 7.9 350 C/10 min 157 328 10.4 350 C/20 min 151 317 9.3 350 C/90 min 142 312 12.1 380 C/10 min 141 315 12.6 380 C/20 min 137 312 12.4 _ 380 C/90 min 133 309 12.2 I
150 C/100 h 248 370 , 5 180 C/100 h 249 373 , 6.3 200 C/100 h 215 346 _ 6.2 250 C/100 h 185 329 7.6 150 C/500 h 239 368 6.5 180 C/500 h 227 352 6.9 200 C/500 h 215 350 7.8 250 C/500 h 162 317 8.9 212 364 10.7 .
2 F>24 h 250 C/90 min 223 358 9.9 350 C/90 min 152 312 13.9 380 C/90 min 139 297 , 17.9 241 394 7.8 2A F>24 h 250 C/90 min 234 375 8.5 , 350 C/90 min 163 332 9 380 C/90 min 144 328 , 13.7 158 321 9.9 3 F>24 h 250 C/90 min 164 324 , 10.4 350 C/90 min 143 307 12 380 C/90 min 129 292 16.4 3A F>24 h 250 C/90 min 181 325 5.9 350 C/90 min 151 315 6.9 380 C/90 min 137 312 , 9.5 138 304 8.2 4 F>24 h 250 C/90 min 145 309 , 9 350 C/90 min 133 297 8.4 380 C/90 min 123 286 , 12.7 152 284 4.3 4A F>24 h 250 C/90 min 163 278 3.7 350 C/90 min 139 286 _ 5.2 380 C/90 min 131 285 5.7
variant [MPa] [MPa] [%]
F 210 359 8.6 Water/F 181 347 9.6 F>24 h 204 353 8.9 Water / F>24 h 176 347 13.4 250 C/10 min 216 352 7.4 I
=
250 C/20 min 218 352 6.8 250 C/90 min 207 349 10.8 _ 350 C/10 min 154 315 12.5 1 350 C/20 min 158 315 10.6 350 C/90 min 147 306 11.4 _ F>24 h 380 C/10 min 145 304 14.1 380 C/20 min 139 299 13.9 380 C/90 min 137 299 16.7 150 C/100 h 221 365 9.4 180 C/100 h 214 346 6 200 C/100 h 211 354 9.4 250 C/100 h 184 336 11.7 :
150 C/500 h 223 353 6 180 C/500 h 216 357 9.7 200 C/500 h 202 349 9.2 250 C/500 h 170 327 12.3 , 1A F 234 345 4.2 Water/F 170 319 4.9 F>24 h 205 355 7.1 Water / F>24 h 188 340 5.6 F>24 h 250 C/10 min 227 355 6.6 250 C/20 min 217 354 7.5 250 C/90 min 213 350 7.9 350 C/10 min 157 328 10.4 350 C/20 min 151 317 9.3 350 C/90 min 142 312 12.1 380 C/10 min 141 315 12.6 380 C/20 min 137 312 12.4 _ 380 C/90 min 133 309 12.2 I
150 C/100 h 248 370 , 5 180 C/100 h 249 373 , 6.3 200 C/100 h 215 346 _ 6.2 250 C/100 h 185 329 7.6 150 C/500 h 239 368 6.5 180 C/500 h 227 352 6.9 200 C/500 h 215 350 7.8 250 C/500 h 162 317 8.9 212 364 10.7 .
2 F>24 h 250 C/90 min 223 358 9.9 350 C/90 min 152 312 13.9 380 C/90 min 139 297 , 17.9 241 394 7.8 2A F>24 h 250 C/90 min 234 375 8.5 , 350 C/90 min 163 332 9 380 C/90 min 144 328 , 13.7 158 321 9.9 3 F>24 h 250 C/90 min 164 324 , 10.4 350 C/90 min 143 307 12 380 C/90 min 129 292 16.4 3A F>24 h 250 C/90 min 181 325 5.9 350 C/90 min 151 315 6.9 380 C/90 min 137 312 , 9.5 138 304 8.2 4 F>24 h 250 C/90 min 145 309 , 9 350 C/90 min 133 297 8.4 380 C/90 min 123 286 , 12.7 152 284 4.3 4A F>24 h 250 C/90 min 163 278 3.7 350 C/90 min 139 286 _ 5.2 380 C/90 min 131 285 5.7
Claims (3)
1. Use of an aluminium alloy of type AlMgSi with creep strength at temperatures for the production of castings subject to thermal and mechanical stresses, consisting of the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited by a polygon A with the coordinates [Mg; Si] [8.5; 2,7] [8.5;
4,7] [6.3; 2,7] [6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder with and manufacturing -related impurities of individually max. 0.05% w/w and max.
0.2% w/w in total, for components subject to thermal and mechanical stresses produced by pressure die casting, mould casting or sand casting.
4,7] [6.3; 2,7] [6.3; 3.4] and that the alloy also contains 0.1 to 1% w/w manganese max. 1% w/w iron max. 3% w/w copper max. 2% w/w nickel max. 0.5% w/w chromium max. 0.6% w/w cobalt max. 0.2% w/w zinc max. 0.2% w/w titanium max. 0.5% w/w zirconium max. 0.008% w/w beryllium max. 0.5% w/w vanadium as well as aluminium as remainder with and manufacturing -related impurities of individually max. 0.05% w/w and max.
0.2% w/w in total, for components subject to thermal and mechanical stresses produced by pressure die casting, mould casting or sand casting.
2. Use according to claim 1, for cylinder crank cases produced by the pressure die casting method in automotive engine construction.
3. Use of an aluminium alloy according to claim 1 or 2, for safety components produced by the pressure die casting method in automotive construction.
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| CH1371/05 | 2005-08-22 | ||
| CH13712005 | 2005-08-22 |
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| EP (1) | EP1757709B1 (en) |
| JP (1) | JP5007086B2 (en) |
| KR (1) | KR101409586B1 (en) |
| CN (1) | CN100999797B (en) |
| AT (1) | ATE376075T1 (en) |
| BR (1) | BRPI0603394B1 (en) |
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| CN103031473B (en) * | 2009-03-03 | 2015-01-21 | 中国科学院苏州纳米技术与纳米仿生研究所 | Processing method of high-toughness Al-Si system die-casting aluminum alloy |
| JP5482787B2 (en) * | 2009-03-31 | 2014-05-07 | 日立金属株式会社 | Al-Mg-Si aluminum alloy for casting having excellent proof stress and cast member comprising the same |
| CN102041415A (en) * | 2009-10-26 | 2011-05-04 | 浙江艾默樱零部件有限公司 | Alloy of high temperature resisting aluminum alloy furnace end and manufacturing method thereof |
| KR101271004B1 (en) * | 2010-12-13 | 2013-06-04 | 자동차부품연구원 | Work hardened wrought aluminum including Co-Ni solid solution and method for manufacturing the same |
| DE102011014590A1 (en) | 2011-01-27 | 2012-08-02 | Volkswagen Aktiengesellschaft | Preparation of aluminum alloy for manufacturing aluminum cast, involves alloying base alloy containing aluminum, copper and titanium, adding zirconium and alloying |
| AT511397B1 (en) * | 2011-05-03 | 2013-02-15 | Sag Motion Ag | METHOD OF REFINING AND PERMITTING MODIFICATION OF AIMGSI ALLOYS |
| CN102296218A (en) * | 2011-08-24 | 2011-12-28 | 吴江市精工铝字制造厂 | High-strength heat-resistant magnalium alloy |
| CN103421992B (en) * | 2013-07-16 | 2015-07-22 | 沈军 | Manufacturing technique of timing sprocket device for ultralight aluminium alloy valve camshaft |
| KR101583887B1 (en) * | 2013-12-18 | 2016-01-08 | 현대자동차주식회사 | Aluminum alloy and vehicle part using the same |
| GB201402323D0 (en) * | 2014-02-11 | 2014-03-26 | Univ Brunel | A high strength cast aluminium alloy for high pressure die casting |
| GB201415420D0 (en) * | 2014-09-01 | 2014-10-15 | Univ Brunel | A casting al-mg-zn-si based aluminium alloy for improved mechanical performance |
| KR101620204B1 (en) * | 2014-10-15 | 2016-05-13 | 현대자동차주식회사 | Alloy for die-casted automotive parts and manufacturing method thereof |
| KR101606525B1 (en) * | 2014-10-29 | 2016-03-25 | 주식회사 케이엠더블유 | Aluminum alloy for die casting having excellent corrosion resistance |
| CN105132756A (en) * | 2015-09-18 | 2015-12-09 | 张家港市和伟五金工具厂 | Heat-resisting aluminium alloy |
| ES2684614T3 (en) * | 2016-04-19 | 2018-10-03 | Rheinfelden Alloys Gmbh & Co. Kg | Alloy for pressure molding |
| EP3235916B1 (en) | 2016-04-19 | 2018-08-15 | Rheinfelden Alloys GmbH & Co. KG | Cast alloy |
| CN107022704A (en) * | 2017-04-11 | 2017-08-08 | 浙江洋铭工贸有限公司 | A kind of high-strength alloy for die-casting aluminum heating radiator |
| CN107557624B (en) * | 2017-08-29 | 2019-03-26 | 河南明泰科技发展有限公司 | A kind of aluminium alloy container aluminium sheet and its production method |
| CN107739923A (en) * | 2017-11-08 | 2018-02-27 | 宁波市海曙兴达铝业有限公司 | Al Mg Si aluminium alloys and preparation method thereof |
| CN108034861B (en) * | 2017-11-27 | 2020-02-21 | 宁波华源精特金属制品有限公司 | Robot cover plate and preparation process thereof |
| CN108330350A (en) * | 2018-01-26 | 2018-07-27 | 安徽省鸣新材料科技有限公司 | A kind of foamed aluminium material and preparation method thereof with high-intensity magnetic field shielding properties |
| CN108754256B (en) * | 2018-07-16 | 2019-12-06 | 上海交通大学 | Non-heat treatment reinforced high-strength high-toughness die-casting aluminum-magnesium-silicon alloy and preparation method thereof |
| EP3670689B1 (en) | 2018-12-20 | 2023-10-18 | Aluminium Rheinfelden Alloys GmbH | Heat-resistant aluminium alloy |
| DE102019214740B3 (en) * | 2019-09-26 | 2021-02-04 | Daimler Ag | Process for manufacturing a component from an aluminum alloy |
| CN112575226A (en) * | 2019-09-27 | 2021-03-30 | 丹阳盛龙电热化工有限公司 | Wear-resistant high-temperature-resistant nickel-chromium alloy and preparation method thereof |
| CN111607725A (en) * | 2020-07-17 | 2020-09-01 | 山西瑞格金属新材料有限公司 | High-toughness corrosion-resistant aluminum alloy and heat treatment mode thereof |
| CN112626391B (en) * | 2021-01-07 | 2022-05-03 | 重庆慧鼎华创信息科技有限公司 | Low-silicon high-heat-conductivity die-casting aluminum alloy and preparation method thereof |
| CN113293328B (en) * | 2021-05-26 | 2023-09-19 | 重庆慧鼎华创信息科技有限公司 | Al-Mg high-strength and toughness die-casting aluminum alloy and preparation method thereof |
| CN116005050B (en) * | 2023-03-24 | 2023-06-20 | 中信戴卡股份有限公司 | Aluminum-magnesium-silicon alloy and preparation method thereof |
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| DE2129352C3 (en) | 1971-06-14 | 1982-03-18 | Honsel-Werke Ag, 5778 Meschede | Use of AlMgSi casting alloys for cylinder heads subject to alternating thermal loads |
| US5178686A (en) * | 1988-12-20 | 1993-01-12 | Metallgesellschaft Aktiengesellschaft | Lightweight cast material |
| JP2541412B2 (en) * | 1991-12-13 | 1996-10-09 | 日本軽金属株式会社 | Aluminum alloy for die casting |
| JPH06212334A (en) * | 1993-01-12 | 1994-08-02 | Nissan Motor Co Ltd | Aluminum alloy for thin casting |
| DE59505226D1 (en) | 1994-11-15 | 1999-04-08 | Rheinfelden Aluminium Gmbh | ALUMINUM CAST ALLOY |
| AT407533B (en) | 1999-01-22 | 2001-04-25 | Aluminium Lend Gmbh | ALUMINUM ALLOY |
| EP1234893B1 (en) | 2001-02-21 | 2004-11-24 | Alcan Technology & Management AG | Cast alloy of the type AlMgSi |
| WO2004031424A1 (en) * | 2002-10-01 | 2004-04-15 | Asahi Tec Corporation | Aluminum alloy for casting-forging, aluminum cast/forged article, and method for manufacture thereof |
| DE10352932B4 (en) * | 2003-11-11 | 2007-05-24 | Eads Deutschland Gmbh | Cast aluminum alloy |
| US20050173032A1 (en) * | 2004-02-11 | 2005-08-11 | Hubert Koch | Casting of an aluminium alloy |
| CN1317410C (en) * | 2005-03-09 | 2007-05-23 | 沈阳工业大学 | Abrasion resistant, heat resistant high silicone aluminium alloy and its shaping technology |
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| EP1757709B1 (en) | 2007-10-17 |
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| MXPA06009523A (en) | 2007-03-01 |
| KR20070022610A (en) | 2007-02-27 |
| CA2556645A1 (en) | 2007-02-22 |
| ATE376075T1 (en) | 2007-11-15 |
| NO20063736L (en) | 2007-02-23 |
| BRPI0603394A (en) | 2007-04-27 |
| EP1757709A1 (en) | 2007-02-28 |
| DE502006000145D1 (en) | 2007-11-29 |
| NO343257B1 (en) | 2019-01-02 |
| BRPI0603394B1 (en) | 2014-07-29 |
| KR101409586B1 (en) | 2014-06-20 |
| JP5007086B2 (en) | 2012-08-22 |
| US20100074796A1 (en) | 2010-03-25 |
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