EP1234893A1 - Cast alloy of the type AlMgSi - Google Patents
Cast alloy of the type AlMgSi Download PDFInfo
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- EP1234893A1 EP1234893A1 EP01810183A EP01810183A EP1234893A1 EP 1234893 A1 EP1234893 A1 EP 1234893A1 EP 01810183 A EP01810183 A EP 01810183A EP 01810183 A EP01810183 A EP 01810183A EP 1234893 A1 EP1234893 A1 EP 1234893A1
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- max
- magnesium
- silicon
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 42
- 239000011777 magnesium Substances 0.000 claims abstract description 26
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000005496 eutectics Effects 0.000 claims abstract description 16
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 16
- 239000010703 silicon Substances 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910019018 Mg 2 Si Inorganic materials 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 239000011572 manganese Substances 0.000 claims abstract description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000007790 solid phase Substances 0.000 claims abstract description 3
- 239000010936 titanium Substances 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- 238000010117 thixocasting Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 8
- 238000004512 die casting Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000012071 phase Substances 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 13
- 238000000137 annealing Methods 0.000 description 11
- 238000005266 casting Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000010118 rheocasting Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 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 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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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
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S164/00—Metal founding
- Y10S164/90—Rheo-casting
Definitions
- the invention relates to a cast alloy of the AlMgSi type.
- the casting alloy for die casting, Rheo and thixocasting, the use of cast alloy for manufacturing large-area and thin-walled components with high absorption capacity for kinetic energy through plastic deformation and use the cast alloy for the production of a component as a safety component in vehicle construction.
- EP-A-0 792 380 is one for die casting, for rheo- and that Suitable for thixocasting of safety components used in vehicle construction AlMgSiMn type alloy known.
- the alloy faces the an excess of magnesium corresponding to the quasi-binary eutectic on. Due to the high proportion of manganese, gluing in the form avoided and good mold release guaranteed. Besides the alloy has a very low iron content.
- the focus is on Ductility, that is to say the deformability and the ductile fracture by the elongation at break.
- the firmness expressed by the Yield strength can take on relatively low values.
- the invention has for its object to provide an aluminum alloy, with which there is also a high elongation at break with sufficient yield strength without performing a high temperature annealing subsequent water quenching can be achieved.
- a cast alloy of the AlMgSi type leads to the achievement of the object according to the invention, which magnesium 3.0 to 7.0% by weight silicon 1.7 to 3.0% by weight manganese 0.2 to 0.48% by weight iron 0.15 to 0.35% by weight titanium Max. 0.2% by weight optionally still nickel 0.1 to 0.4% by weight and aluminum as the rest and manufacturing-related impurities individually max. 0.02% by weight, total max. Contains 0.2% by weight, with the further proviso that magnesium and silicon in the alloy in a weight ratio Mg: Si of 1.7: 1 corresponding to the composition of the quasi-binary eutectic with the solid phases A1 and Mg 2 Si are present, the deviation from the exact composition corresponding to the quasi-binary eutectic for magnesium max. -0.5 to +0.3 wt .-% and for silicon - 0.3 to + 0.5 wt .-%.
- the alloy according to the invention due to the special choice of the weight ratio Mg: Si, leads to an excretion behavior of the eutectic phase Mg 2 Si which is extremely favorable for ductility, which is extremely finely formed and evenly distributed, which ultimately results in a comparison with comparable alloys according to the prior art improved ductility.
- Due to the higher iron content aluminum of lower purity can also be used as an alloy base, which reduces the production costs for the alloy.
- the increased iron content also makes it possible to reduce the manganese additive used to reduce the tendency of the alloy to stick in the die. To achieve optimal mechanical properties, care should be taken to ensure that the deviation from the exact composition corresponding to the quasi-binary eutectic for magnesium max. - 0.2 to + 0.1 wt .-% and for silicon max. - 0.1 to + 0.2 wt .-%.
- magnesium and Silicon in the alloy essentially in a weight ratio of Mg: Si of 1.7: 1 according to the composition of the quasi-binary eutectic in front.
- the optional addition of 0.1 to 0.4 wt% nickel leads to a further improvement the molding properties or reduction in the tendency to stick, whereby the manganese content of the alloy is kept at the lower range limit can be.
- a type A heat treatment leads to a yield strength Rp 0.2 of up to 180 MPa and an elongation at break A5 of up to 13%. These strength and ductility properties cannot be achieved with the usual die-cast, rheo- and thixocasting alloys in the as-cast state, i.e. without heat treatment.
- annealing between 380 and 460 ° C with subsequent cooling in air means that no further curing annealing is necessary. Due to the finely dispersed precipitation of the Mg 2 Si phase, ductility or shaping takes place even at an annealing temperature of less than 400 ° C.
- the cast alloy according to the invention in a heat treatment state in accordance with type C is therefore a preferred variant, in particular for components with very high demands on the crash behavior. In addition to the fact that the components are only slightly warped when annealed below 400 ° C in combination with cooling in still air, this annealing can prevent bubble formation due to gas porosity at a relatively low temperature.
- the cast alloy according to the invention is preferred used for die casting, rheo- and thixocasting.
- the preferred field of application for the cast alloy according to the invention lies in the production of large-area and thin-walled components with high Absorption capacity for kinetic energy through plastic deformation. This Properties correspond to those of a safety component in vehicle construction requirements, which is why the alloy is used in particular for manufacturing of the safety components mentioned is suitable.
- the optimal weight ratio Mg: Si of 1.7: 1 corresponding to the composition of the quasi-binary eutectic Al / Mg 2 Si is represented by the straight line E, the area of interest here for the magnesium content 3.0 to 7.0% by weight for the silicon content is 1.7 to 3.0% by weight.
- the maximum permissible tolerance values for magnesium and silicon are defined by the two straight lines A1 and A2, the preferred tolerance limit values by the straight lines B1 and B2, with A1 and B1 relating to the eutectic composition of phases A1 and Mg 2 Si on the magnesium excess side, A2 and B2 are on the excess silicon side.
- the cast alloy according to the invention has its larger tolerance range on the excess silicon side.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Body Structure For Vehicles (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Mold Materials And Core Materials (AREA)
- Continuous Casting (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Eine Gusslegierung vom Typ AlMgSi enthält
Die feindisperse Ausscheidung der intermetallischen Phase Mg2Si führt zu einer
hohen Duktilität. Eine gute Einformung der Mg2Si-Ausscheidungspartikel ergibt
sich schon bei Temperaturen von weniger als 400°C.
Description
Die Erfindung betrifft eine Gusslegierung vom Typ AlMgSi. Im Rahmen der Erfindung liegen auch die Verwendung der Gusslegierung für das Druckgiessen, das Rheo- und das Thixocasting, die Verwendung der Gusslegierung zur Herstellung grossflächiger und dünnwandiger Bauteile mit hohem Aufnahmevermögen für kinetische Energie durch plastische Verformung sowie die Verwendung der Gusslegierung zur Herstellung eines Bauteiles als Sicherheitsbauteil im Fahrzeugbau.The invention relates to a cast alloy of the AlMgSi type. Within the scope of the invention lie also the use of the casting alloy for die casting, Rheo and thixocasting, the use of cast alloy for manufacturing large-area and thin-walled components with high absorption capacity for kinetic energy through plastic deformation and use the cast alloy for the production of a component as a safety component in vehicle construction.
Mit modernen Giessverfahren können heute hoch belastbare Formteile auch aus Aluminiumlegierungen hergestellt werden. Die eingesetzten Aluminiumwerkstoffe müssen allerdings eine Reihe von Anforderungen erfüllen. Eine wesentliche Voraussetzung für die Eignung eines Werkstoffes ist die Einhaltung bestimmter mechanischer Kennwerte. So bestimmen etwa Mindestwerte von Streckgrenze und Festigkeit die Tragfähigkeit einer Konstruktion. Im Fahrzeugbau kommt die Anforderung hinzu, dass die bei einem Zusammenstoss deformierten Bauteile vor dem Bruch möglichst viel Energie durch plastische Verformung absorbieren sollen, was eine hohe Duktilität des eingesetzten Werkstoffes erfordert. Das Druckgiessverfahren, das Rheo- und das Thixocasting ermöglichen bei hohen Stückzahlen eine kostengünstige Herstellung dünnwandiger Gussstücke, wie sie als crashrelevante Bauteile im Automobilbau eingesetzt werden. Dünnwandige Teile stellen hohe Anforderungen an die Giessbarkeit. Aluminiumlegierungen, welche die an das Fliessverhalten bzw. Formfüllungsvermögen gestellten Anforderungen erfüllen können, sind heute vor allem Legierungen mit einem Si-Eutektikum.With modern casting processes, highly resilient molded parts can also be used today be made from aluminum alloys. The aluminum materials used however, must meet a number of requirements. An essential one Compliance is a prerequisite for the suitability of a material certain mechanical parameters. For example, minimum values of Yield strength and strength are the load-bearing capacity of a construction. In vehicle construction there is also the requirement that those deformed in a collision Components break as much energy as possible through plastic deformation should absorb what a high ductility of the material used requires. The die casting process, rheo- and thixocasting enable In the case of large quantities, inexpensive thin-walled manufacture Castings, such as those used as crash-relevant components in automotive engineering become. Thin-walled parts place high demands on the castability. Aluminum alloys, which adhere to the flow behavior or mold filling capacity Alloys can be used today with a Si eutectic.
Aus der EP-A-0 792 380 ist eine zum Druckgiessen, für des Rheo- und das Thixocasting von im Fahrzeugbau eingesetzten Sicherheitsbauteilen geeignete Legierung vom Typ AlMgSiMn bekannt. Die Legierung weist gegenüber der dem quasi-binären Eutektikum entsprechenden Zusammensetzung einen Magnesiumüberschuss auf. Durch den hohen Anteil an Mangan wird das Kleben in der Form vermieden und eine gute Entformbarkeit gewährleistet. Daneben weist die Legierung einen sehr geringen Eisengehalt auf.From EP-A-0 792 380 is one for die casting, for rheo- and that Suitable for thixocasting of safety components used in vehicle construction AlMgSiMn type alloy known. The alloy faces the an excess of magnesium corresponding to the quasi-binary eutectic on. Due to the high proportion of manganese, gluing in the form avoided and good mold release guaranteed. Besides the alloy has a very low iron content.
Bauteile mit teilweise geringen Wandstärken, wie sie beispielsweise als Strukturbauteile im Automobilbau eingesetzt werden, verziehen sich beim schroffen Abschrecken mit Wasser und müssen daher nachträglich aufwendigen Richtoperationen unterzogen werden. Zudem kann eine hohe Lösungsglühtemperatur infolge einer Restgasporosität zu Blasenbildung an der Oberfläche der Bauteile führen. Zur Herstellung von Bauteilen der genannten Art durch Druckgiessen, Rheo- und Thixocasting wurde deshalb nach Möglichkeiten gesucht, die geforderten minimalen Festigkeits- und Dehungswerte auch ohne Durchführung einer Hochtemperaturglühung mit nachfolgender Wasserabschreckung zu erzielen.Components with sometimes thin walls, such as structural components used in automobile construction warp when rugged Quenching with water and therefore have to perform complex straightening operations afterwards be subjected. In addition, a high solution annealing temperature due to residual gas porosity to bubble formation on the surface of the Guide components. For the production of components of the type mentioned by die casting, Rheo and thixocasting was therefore looked for ways the required minimum strength and elongation values even without implementation high temperature annealing with subsequent water quenching achieve.
Für crashrelevante Bauteile im Automobilbau wird der Schwerpunkt auf die Duktilität, also auf das Verformungsvermögen und auf den duktilen Bruch, ausgedrückt durch die Bruchdehnung, gelegt. Die Festigkeit, ausgedrückt durch die Streckgrenze, kann dabei relativ tiefe Werte annehmen.For crash-relevant components in automotive engineering, the focus is on Ductility, that is to say the deformability and the ductile fracture by the elongation at break. The firmness expressed by the Yield strength, can take on relatively low values.
Der Erfindung liegt die Aufgabe zugrunde, eine Aluminiumlegierung anzugeben, mit welcher eine hohe Bruchdehnung bei ausreichender Streckgrenze auch ohne Durchführung einer Hochtemperaturglühung nachfolgender Wasserabschreckung erreicht werden kann.The invention has for its object to provide an aluminum alloy, with which there is also a high elongation at break with sufficient yield strength without performing a high temperature annealing subsequent water quenching can be achieved.
Zur erfindungsgemässen Lösung der Aufgabe führt eine Gusslegierung vom
Typ AlMgSi, welche
Die erfindungsgemässe Legierung führt durch die besondere Wahl des Gewichtsverhältnisses Mg : Si zu einem für die Duktilität äusserst günstigen Ausscheidungsverhalten der eutektischen Phase Mg2Si, welche äusserst fein ausgebildet und gleichmässig verteilt ist, was sich letztlich in einer gegenüber vergleichbaren Legierungen nach dem Stand der Technik verbesserten Duktilität niederschlägt. Durch den höheren Eisengehalt kann zudem als Legierungsbasis Aluminium von geringerer Reinheit verwendet werden, wodurch sich die Gestehungskosten für die Legierung reduzieren. Der erhöhte Eisengehalt erlaubt es auch, den zur Verminderung der Klebeneigung der Legierung in der Druckgiessform verwendeten Manganzusatz herabzusetzen. Zur Erzielung optimaler mechanischer Eigenschaften sollte darauf geachtet werden, dass die Abweichung von der exakten, dem quasi-binären Eutektikum entsprechenden Zusammensetzung für Magnesium max. - 0,2 bis + 0,1 Gew.-% und für Silizium max.- 0,1 bis + 0,2 Gew.-% beträgt.The alloy according to the invention, due to the special choice of the weight ratio Mg: Si, leads to an excretion behavior of the eutectic phase Mg 2 Si which is extremely favorable for ductility, which is extremely finely formed and evenly distributed, which ultimately results in a comparison with comparable alloys according to the prior art improved ductility. Due to the higher iron content, aluminum of lower purity can also be used as an alloy base, which reduces the production costs for the alloy. The increased iron content also makes it possible to reduce the manganese additive used to reduce the tendency of the alloy to stick in the die. To achieve optimal mechanical properties, care should be taken to ensure that the deviation from the exact composition corresponding to the quasi-binary eutectic for magnesium max. - 0.2 to + 0.1 wt .-% and for silicon max. - 0.1 to + 0.2 wt .-%.
Bei einer optimal zusammengesetzten Gusslegierung liegen Magnesium und Silizium in der Legierung im wesentlichen in einem Gewichtsverhältnis Mg : Si von 1,7 : 1 entsprechend der Zusammensetzung des quasi-binären Eutektikums vor.With an optimally composed casting alloy, magnesium and Silicon in the alloy essentially in a weight ratio of Mg: Si of 1.7: 1 according to the composition of the quasi-binary eutectic in front.
Der optionale Zusatz von 0,1 bis 0,4 Gew.-% Nickel führt zu einer weiteren Verbesserung der Ausformeigenschaften bzw. Verminderung der Klebeneigung, wodurch der Mangangehalt der Legierung an der unteren Bereichsgrenze gehalten werden kann.The optional addition of 0.1 to 0.4 wt% nickel leads to a further improvement the molding properties or reduction in the tendency to stick, whereby the manganese content of the alloy is kept at the lower range limit can be.
Der höhere Eisen- und ggf. Nickel-Gehalt im Vergleich zu der aus der EP-A-0 792 380 vorbekannten Legierung hat einen positiven Einfluss auf die mechanischen Eigenschaften, da die bei diesen Legierungen auftretenden Al12(Mn,Fe)3Si-Phasen deutlich feiner ausgebildet und gleichmässiger im Gefüge verteilt sind.The higher iron and possibly nickel content compared to the alloy known from EP-A-0 792 380 has a positive influence on the mechanical properties, since the Al 12 (Mn, Fe) 3 Si Phases are much finer and more evenly distributed in the structure.
Mit der erfindungsgemässen Legierung können alle bezüglich Festigkeit und Duktilität eines Sicherheitsbauteiles im Fahrzeugbau gestellten Anforderungen nach Durchführung der folgenden drei Wärmebehandlungs-Typen A, B und C erfüllt werden:
- Typ A:
- Gusszustand, mittlere Festigkeit und gute Duktilität, keine Wärmebehandlung erforderlich
- Typ B:
- Höchste Festigkeit und mittlere Duktilität, zwei Wärmebehandlungen erforderlich
- Typ C:
- Mittlere Festigkeit und höchste Duktilität, eine Wärmebehandlung erforderlich
- Type A:
- Cast condition, medium strength and good ductility, no heat treatment required
- Type B:
- Highest strength and medium ductility, two heat treatments required
- Type C:
- Medium strength and highest ductility, heat treatment required
Eine Wärmebehandlung vom Typ A führt zu einer Streckgrenze Rp0,2 von bis zu 180 MPa und einer Bruchdehnung A5 von bis zu 13%. Diese Festigkeits- und Duktilitätseigenschaften können mit den üblichen Druckguss-, Rheo- und Thixocasting-Legierungen im Gusszustand, also ohne Wärmebehandlung, nicht erreicht werden. A type A heat treatment leads to a yield strength Rp 0.2 of up to 180 MPa and an elongation at break A5 of up to 13%. These strength and ductility properties cannot be achieved with the usual die-cast, rheo- and thixocasting alloys in the as-cast state, i.e. without heat treatment.
Mit einer Wärmebehandlung vom Typ B, d.h. mit einer Lösungsglühung und Ausscheidungshärtung, können Festigkeitswerte, ausgedrückt durch die Streckgrenze Rp0,2, von bis zu 380 MPa erreicht werden, was mit handelsüblichen Druckgruss-, Rheo- und Thixocasting-Legierungen nicht möglich ist.With type B heat treatment, ie with solution annealing and precipitation hardening, strength values, expressed by the yield strength Rp 0.2 , of up to 380 MPa can be achieved, which is not possible with commercially available pressure casting, rheo and thixocasting alloys.
Mit einer Wärmebehandlung gemäss Typ C kann durch eine Glühung zwischen 380 und 460°C mit anschliessender Abkühlung an Luft auf eine weitere Aushärtungsglühung verzichtet werden. Durch die feindisperse Ausscheidung der Mg2Si-Phase erfolgt eine Duktilisierung bzw. Einformung bereits bei einer Glühtemperatur von weniger als 400°C. Die erfindungsgemässe Gusslegierung in einem Wärmebehandlungszustand gemäss Typ C ist demzufolge insbesondere für Bauteile mit sehr hohen Anforderungen an das Crashverhalten eine bevorzugte Variante. Neben der Tatsache, dass die Bauteile bei einer Glühung unterhalb von 400°C in Kombination mit einer Abkühlung an ruhender Luft nur wenig Verzug aufweisen, kann eine Blasenbildung infolge von Gasporosität durch diese Glühung bei verhältnismässig tiefer Temperatur verhindert werden.With a heat treatment according to type C, annealing between 380 and 460 ° C with subsequent cooling in air means that no further curing annealing is necessary. Due to the finely dispersed precipitation of the Mg 2 Si phase, ductility or shaping takes place even at an annealing temperature of less than 400 ° C. The cast alloy according to the invention in a heat treatment state in accordance with type C is therefore a preferred variant, in particular for components with very high demands on the crash behavior. In addition to the fact that the components are only slightly warped when annealed below 400 ° C in combination with cooling in still air, this annealing can prevent bubble formation due to gas porosity at a relatively low temperature.
Eine Einformungsglühung des Eutektikums bei Temperaturen um 500°C, wie dies derzeit bei Druckguss-, Rheo- und Thixocasting-Legierungen vom Typ AlSi üblich ist, kann zur Erzielung crashrelevanter Bauteileigenschaften entfallen.A shaping annealing of the eutectic at temperatures around 500 ° C, such as this is currently the case with die-casting, rheo- and thixocasting alloys of the AlSi type is common, can be omitted to achieve crash-relevant component properties.
Wie bereits erwähnt, wird die erfindungsgemässe Gusslegierung vorzugsweise für das Druckgiessen, das Rheo- und das Thixocasting eingesetzt.As already mentioned, the cast alloy according to the invention is preferred used for die casting, rheo- and thixocasting.
Das bevorzugte Anwendungsgebiet für die erfindungsgemässe Gusslegierung liegt in der Herstellung grossflächiger und dünnwandiger Bauteile mit hohem Aufnahmevermögen für kinetische Energie durch plastische Verformung. Diese Eigenschaften entsprechen den an ein als Sicherheitsbauteil im Fahrzeugbau gestellten Anforderungen, weshalb die Legierung insbesondere zur Herstellung der genannten Sicherheitsbauteile geeignet ist. The preferred field of application for the cast alloy according to the invention lies in the production of large-area and thin-walled components with high Absorption capacity for kinetic energy through plastic deformation. This Properties correspond to those of a safety component in vehicle construction requirements, which is why the alloy is used in particular for manufacturing of the safety components mentioned is suitable.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in vereinfachter Darstellung in
- Fig. 1 das Verhältnis Mg : Si in der erfindungsgemässen Legierung mit Toleranzgrenzen.
- 1 shows the Mg: Si ratio in the alloy according to the invention with tolerance limits.
In der Darstellung gemäss Fig. 1 ist das optimale Gewichtsverhältnis Mg : Si von 1,7 : 1 entsprechend der Zusammensetzung des quasi-binären Eutektikums Al/Mg2Si durch die Gerade E dargestellt, wobei der hier interessierende Bereich für den Magnesiumgehalt 3,0 bis 7,0 Gew.-%, für den Siliziumgehalt 1,7 bis 3,0 Gew.-% beträgt. Die höchstzulässigen Toleranzwerte für Magnesium bzw. Silizium sind durch die beiden Geraden A1 und A2, die bevorzugten Toleranzgrenzwerte durch die Geraden B1 und B2 definiert, wobei A1 und B1 bezüglich der eutektischen Zusammensetzung der Phasen A1 und Mg2Si auf der Magnesium-Überschussseite, A2 und B2 auf der Silizium-Überschussseite liegen. Die erfindungsgemässe Gusslegierung hat ihren grösseren Toleranzbereich auf der Silizium-Überschussseite.1, the optimal weight ratio Mg: Si of 1.7: 1 corresponding to the composition of the quasi-binary eutectic Al / Mg 2 Si is represented by the straight line E, the area of interest here for the magnesium content 3.0 to 7.0% by weight for the silicon content is 1.7 to 3.0% by weight. The maximum permissible tolerance values for magnesium and silicon are defined by the two straight lines A1 and A2, the preferred tolerance limit values by the straight lines B1 and B2, with A1 and B1 relating to the eutectic composition of phases A1 and Mg 2 Si on the magnesium excess side, A2 and B2 are on the excess silicon side. The cast alloy according to the invention has its larger tolerance range on the excess silicon side.
- Typ A:
- Gusszustand, keine Wärmebehandlung
- Typ B:
- Lösungsglühung bei 540°C während 3 h, abgeschreckt mit Wasser, Ausscheidungshärtung bei 170°C während 8 h
- Typ C:
- Glühung bei 390°C während 50 min, Abkühlung an ruhender Luft.
- Type A:
- Cast condition, no heat treatment
- Type B:
- Solution annealing at 540 ° C for 3 h, quenched with water, precipitation hardening at 170 ° C for 8 h
- Type C:
- Annealing at 390 ° C for 50 min, cooling in still air.
Die Ergebnisse sind in der nachfolgenden Tabelle zusammengestellt. Hierbei
bedeuten Rp0,2 die Dehngrenze, Rm die Zugfestigkeit und A5 die Bruchdehnung.
Bei den angegebenen Messwerten handelt es sich um Mittelwerte aus
fünf Einzelmessungen.
Claims (6)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES01810183T ES2232584T3 (en) | 2001-02-21 | 2001-02-21 | COLD ALLOY OF AIMGSI TYPE. |
| DE50104594T DE50104594D1 (en) | 2001-02-21 | 2001-02-21 | AIMgSi cast alloy |
| PT01810183T PT1234893E (en) | 2001-02-21 | 2001-02-21 | A1MGSI TYPE MOLDING CONNECTION |
| AT01810183T ATE283380T1 (en) | 2001-02-21 | 2001-02-21 | AIMGSI TYPE CASTING ALLOY |
| EP01810183A EP1234893B1 (en) | 2001-02-21 | 2001-02-21 | Cast alloy of the type AlMgSi |
| US10/072,448 US6623570B2 (en) | 2001-02-21 | 2002-02-08 | AlMgSi casting alloy |
| CA002371318A CA2371318C (en) | 2001-02-21 | 2002-02-11 | Aimgsi casting alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01810183A EP1234893B1 (en) | 2001-02-21 | 2001-02-21 | Cast alloy of the type AlMgSi |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1234893A1 true EP1234893A1 (en) | 2002-08-28 |
| EP1234893B1 EP1234893B1 (en) | 2004-11-24 |
Family
ID=8183749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01810183A Expired - Lifetime EP1234893B1 (en) | 2001-02-21 | 2001-02-21 | Cast alloy of the type AlMgSi |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6623570B2 (en) |
| EP (1) | EP1234893B1 (en) |
| AT (1) | ATE283380T1 (en) |
| CA (1) | CA2371318C (en) |
| DE (1) | DE50104594D1 (en) |
| ES (1) | ES2232584T3 (en) |
| PT (1) | PT1234893E (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757709A1 (en) | 2005-08-22 | 2007-02-28 | ALUMINIUM RHEINFELDEN GmbH | Heat resistant aluminium alloy |
| CN102787286A (en) * | 2012-07-17 | 2012-11-21 | 贵州航天电子科技有限公司 | Molding method of (2A12-T4) high-strength aluminum alloy thin-wall irregular cavity |
| US8574382B2 (en) | 2007-05-24 | 2013-11-05 | Aluminium Rheinfelden Gmbh | Heat-resistant aluminium alloy |
| CN109913710A (en) * | 2017-12-12 | 2019-06-21 | 现代自动车株式会社 | Aluminium alloy for die casting |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA96812C2 (en) | 2010-01-21 | 2011-12-12 | Юлий Викторович Мильман | Aluminium cast alloy containing magnesium and silicon |
| EP3870728A4 (en) * | 2018-10-26 | 2022-10-19 | The Regents Of The University Of California | NANO-TREATMENT OF HIGH STRENGTH ALUMINUM ALLOYS FOR MANUFACTURING PROCESSES |
| CN110029252B (en) * | 2019-04-12 | 2021-08-24 | 范卫忠 | A kind of high-strength, high-toughness-resistant alumina-magnesium alloy material for 5G mobile phone mid-board and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838829A1 (en) * | 1988-11-17 | 1990-05-23 | Vaw Ver Aluminium Werke Ag | Anodically oxidised and electrolytically coloured casting of a titanium-containing AlMg casting alloy |
| JPH05163546A (en) * | 1991-12-13 | 1993-06-29 | Nippon Light Metal Co Ltd | Die casting aluminum alloy |
| WO1996015281A1 (en) * | 1994-11-15 | 1996-05-23 | Aluminium Rheinfelden Gmbh | Cast aluminium alloy |
| WO2000043560A1 (en) * | 1999-01-22 | 2000-07-27 | Aluminium Lend Gmbh | Aluminum-magnesium-silicon alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2001
- 2001-02-21 EP EP01810183A patent/EP1234893B1/en not_active Expired - Lifetime
- 2001-02-21 PT PT01810183T patent/PT1234893E/en unknown
- 2001-02-21 ES ES01810183T patent/ES2232584T3/en not_active Expired - Lifetime
- 2001-02-21 DE DE50104594T patent/DE50104594D1/en not_active Expired - Lifetime
- 2001-02-21 AT AT01810183T patent/ATE283380T1/en not_active IP Right Cessation
-
2002
- 2002-02-08 US US10/072,448 patent/US6623570B2/en not_active Expired - Fee Related
- 2002-02-11 CA CA002371318A patent/CA2371318C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838829A1 (en) * | 1988-11-17 | 1990-05-23 | Vaw Ver Aluminium Werke Ag | Anodically oxidised and electrolytically coloured casting of a titanium-containing AlMg casting alloy |
| JPH05163546A (en) * | 1991-12-13 | 1993-06-29 | Nippon Light Metal Co Ltd | Die casting aluminum alloy |
| WO1996015281A1 (en) * | 1994-11-15 | 1996-05-23 | Aluminium Rheinfelden Gmbh | Cast aluminium alloy |
| WO2000043560A1 (en) * | 1999-01-22 | 2000-07-27 | Aluminium Lend Gmbh | Aluminum-magnesium-silicon alloy |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 017, no. 567 (C - 1120) 14 October 1993 (1993-10-14) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757709A1 (en) | 2005-08-22 | 2007-02-28 | ALUMINIUM RHEINFELDEN GmbH | Heat resistant aluminium alloy |
| NO343257B1 (en) * | 2005-08-22 | 2019-01-02 | Rheinfelden Aluminium Gmbh | Heat-resistant aluminum alloy |
| US8574382B2 (en) | 2007-05-24 | 2013-11-05 | Aluminium Rheinfelden Gmbh | Heat-resistant aluminium alloy |
| CN102787286A (en) * | 2012-07-17 | 2012-11-21 | 贵州航天电子科技有限公司 | Molding method of (2A12-T4) high-strength aluminum alloy thin-wall irregular cavity |
| CN102787286B (en) * | 2012-07-17 | 2014-11-26 | 贵州航天电子科技有限公司 | Molding method of (2A12-T4) high-strength aluminum alloy thin-wall irregular cavity |
| CN109913710A (en) * | 2017-12-12 | 2019-06-21 | 现代自动车株式会社 | Aluminium alloy for die casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2371318C (en) | 2007-08-14 |
| US20020155022A1 (en) | 2002-10-24 |
| ES2232584T3 (en) | 2005-06-01 |
| ATE283380T1 (en) | 2004-12-15 |
| CA2371318A1 (en) | 2002-08-21 |
| PT1234893E (en) | 2005-03-31 |
| US6623570B2 (en) | 2003-09-23 |
| EP1234893B1 (en) | 2004-11-24 |
| DE50104594D1 (en) | 2004-12-30 |
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