WO2005090628A1 - Alliage de fonderie al/si contenant du zn et du mg et procede pour produire une piece en fonte a partir d'un tel alliage - Google Patents

Alliage de fonderie al/si contenant du zn et du mg et procede pour produire une piece en fonte a partir d'un tel alliage Download PDF

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Publication number
WO2005090628A1
WO2005090628A1 PCT/EP2005/002826 EP2005002826W WO2005090628A1 WO 2005090628 A1 WO2005090628 A1 WO 2005090628A1 EP 2005002826 W EP2005002826 W EP 2005002826W WO 2005090628 A1 WO2005090628 A1 WO 2005090628A1
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WO
WIPO (PCT)
Prior art keywords
alloy
cast part
casting
temperature
cast
Prior art date
Application number
PCT/EP2005/002826
Other languages
German (de)
English (en)
Inventor
Matthew Otte
Original Assignee
Hydro Aluminium Deutschland Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hydro Aluminium Deutschland Gmbh filed Critical Hydro Aluminium Deutschland Gmbh
Publication of WO2005090628A1 publication Critical patent/WO2005090628A1/fr

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Classifications

    • 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
    • C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc 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
    • 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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent

Definitions

  • the invention relates to an Al / Si cast alloy and a method for producing a cast part from such an alloy.
  • an alloy known under the name "Autodur” (AlSilOZn ⁇ ) has, in addition to magnesium, additionally high proportions of zinc of approximately 10% by weight. These make it possible to process a casting made from the Autodur alloy without heat treatment. However, it turns out that the microstructure obtained in the casting and the mechanical properties of the known alloy are unstable. In addition, there is an increased sensitivity to corrosion and quenching of the known material.
  • the object of the invention was to create an Al / Si cast alloy in which good mechanical properties are combined with a low sensitivity to the development of residual internal stresses and warpage of its microstructure.
  • a method is to be specified with which castings can be produced safely and in a targeted manner with a correspondingly optimized combination of properties.
  • this task is solved by an Al / Si cast alloy, which in addition to aluminum, silicon and impurities (in% by weight) that are unavoidable in production (4 - 5% Zn, 0.3 - 0.5% Mg, 0 , 2 - 0.6% Fe, 0.15 - 0.45% Mn and optionally 0.1 - 0.5% Cu.
  • the silicon contents are usually in the range from 5 to 18% by weight.
  • the invention is based on an Al alloy which has silicon contents which are in the usual range for good castability.
  • Magnesium and zinc contents are added to this basic alloy in order to effect precipitation hardening based on the Al-Mg-Zn precipitation system.
  • the Zn and Mg contents provided according to the invention ensure a flexibly adaptable starting point for setting the properties of the alloy according to the invention.
  • the Si contents of the alloys according to the invention can be varied within wide limits, on the one hand to optimize the castability of the alloy or on the other hand to achieve improved wear properties.
  • the Si contents are preferably varied in the range from 5 to 18% by weight.
  • the Mg content has been limited to a maximum of 0.5% by weight, since the formation of Mg-Fe 'pi' phases in primary or secondary aluminum cannot be ruled out at higher Mg contents. These phases are difficult to resolve in the further process and have a negative impact on the ductility of the material.
  • the range of Mg contents in an alloy according to the invention is therefore preferably limited to 0.3-0.4% by weight of magnesium.
  • the Zn contents are limited to 4-5% by weight, on the one hand to use the strength-increasing effect of Zn and on the other hand to avoid an increase in the sensitivity to quenching and the formation of cracks as a result of stress corrosion.
  • the alloy according to the invention can contain Cu up to the predetermined upper limit in order to improve the heat resistance of the alloy. This improvement occurs at a content of at least 0.1% by weight of Cu.
  • the positive influence of Cu can be used particularly effectively if the Cu content is at least 0.3% by weight.
  • Fe can be present up to the specified upper limit in Al / Si compositions according to the invention as a component of the primary or secondary aluminum from which the alloy was produced.
  • an alloy according to the invention behaves like any other Fe-containing Al / Si alloy.
  • excessively high Fe contents lead to a decrease in the elasticity and can impair the effectiveness of the heat treatment by forming "pi" phases (FeMg 3 Si6Al 8 ).
  • c) carrying out an aging treatment of the solution-annealed and cooled cast part comprising cl) keeping the cast part at room temperature for one to five days (cold aging), c.2) subsequent controlled heating of the casting to an aging temperature of 150-240 ° C with a heating rate of at most 1200 ° C / h, c.3) holding the casting at aging temperature for at least 2 hours, c.4) cooling of the aging treated casting.
  • the properties of the alloy according to the invention can be used particularly well if it is used in the T6 or T7 state.
  • the cast part is first subjected to solution annealing after casting.
  • the annealing temperature is preferably in the range from 430 ° C to 540 ° C. Annealing temperatures in the lower section of this range prove to be favorable in the majority of such applications in which Mg and Zn are to be homogenized.
  • These alloying elements are dissolved in particular at temperatures of 430 ° C - 450 ° C. If, on the other hand, rounded silicon phases are to be produced in the workpiece, it is advantageous to anneal in the higher temperature section above 450 ° C. At temperatures above 480 ° C, the hardening elements will be brought into solution so that increases in strength can be achieved when heated to these temperatures.
  • the cast part After solution annealing, the cast part is cooled in a manner known per se. To do this, it can be cooled in quiescent air in a controlled manner or quenched by targeted application of air or water.
  • the workpiece obtained has a stable Micro structure and equally stable mechanical properties.
  • Controlled cooling is followed by natural aging.
  • the cast part is kept at room temperature for a sufficient period of time, which is preferably 1 to 5 days.
  • the workpiece is then heated to the aging temperature at which it is held for at least 2 hours.
  • the aging temperature is advantageously 160 ° C to 220 ° C. It has been found that particularly favorable properties are obtained when these temperatures are maintained. Tests have shown that, particularly when producing components for internal combustion engines, good property profiles are obtained when working with high aging temperatures.
  • the heating takes place at a heating rate of 400 ° C / h to 1200 ° C / h, preferably approximately 800 ° C / h.
  • the heating to the aging temperature can take place if the temperature does not increase continuously.
  • it preferably comprises at least one holding section in which the workpiece is held at a holding temperature of 90 ° C.-110 ° C. for a specific holding time.
  • a holding temperature of 90 ° C.-110 ° C. for a specific holding time.
  • castings can be produced which have an elastic limit of at least 140 MPa and at least 250 MPa tensile strength have at least 5% up to 12% and more elongation.
  • the cast parts produced according to the invention prove to be insensitive to the formation of residual stresses and the development of distortions in the structure as a result of the heat treatment.
  • composition of the alloy according to the invention and the manufacturing process according to the invention result in the formation of GP zones in the workpiece at room temperature or at the elevated holding temperature. Subsequently, during the holding at the aging temperature, n 'precipitates (MgZn 2 ) are formed from the GP zones, which then form n precipitates.
  • the melts S1 and S2 were cast into test pieces. These test pieces were then solution annealed at a temperature of 530 ° C for 6 hours.
  • a first group of castings cast from the melts S1 and S2 is then accelerated with water and a second group of castings from the melts S1 and S2 cast castings have been accelerated in air to room temperature.
  • the castings were then heated to a holding temperature of 90 ° C, at which they were held for 4 hours.
  • the castings were then heated to an aging temperature of 180 ° C., at which they were also kept for 8 hours.
  • the heating rate was approx. 1000 ° C / h in each case.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Continuous Casting (AREA)

Abstract

L'invention concerne un alliage de fonderie Al/Si qui combine de bonnes propriétés mécaniques à une faible sensibilité à l'apparition de contraintes internes résiduelles et de gauchissements de sa structure. A cet effet, l'alliage de fonderie Al/Si selon l'invention contient (en % en poids) Zn: 4 - 5 %, Mg: 0,3 - 0,5 %, Fe: 0,2 - 0,6 %, Mn: 0,15 - 0,45 %, éventuellement Cu dans des proportions de 0,1 - 0,5 %, le reste étant constitué d'aluminium, de silicium et d'impuretés inévitables liées à la production. L'invention concerne également un procédé permettant d'obtenir, de manière sûre et ciblée, des pièces en fonte présentant une combinaison de propriétés optimisées de manière appropriée.
PCT/EP2005/002826 2004-03-20 2005-03-17 Alliage de fonderie al/si contenant du zn et du mg et procede pour produire une piece en fonte a partir d'un tel alliage WO2005090628A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410013777 DE102004013777B4 (de) 2004-03-20 2004-03-20 Verfahren zur Herstellung eines Gussteils aus einer AL/Si-Gusslegierung
DE102004013777.3 2004-03-20

Publications (1)

Publication Number Publication Date
WO2005090628A1 true WO2005090628A1 (fr) 2005-09-29

Family

ID=34961904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/002826 WO2005090628A1 (fr) 2004-03-20 2005-03-17 Alliage de fonderie al/si contenant du zn et du mg et procede pour produire une piece en fonte a partir d'un tel alliage

Country Status (2)

Country Link
DE (1) DE102004013777B4 (fr)
WO (1) WO2005090628A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051162A2 (fr) * 2005-10-28 2007-05-03 Alcoa Inc. Alliage d'al-si-mg a resistance elevee aux chocs et procedes destines a la production d'un moulage automobile
DE102010007531A1 (de) * 2010-02-11 2011-08-11 Audi Ag, 85057 Verfahren zum Herstellen eines Karosseriebauteils
WO2011098213A3 (fr) * 2010-02-11 2011-12-08 Trimet Aluminium Ag Procédé et dispositif destinés à la fabrication de pièces de suspensions de véhicules à moteur

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046803B4 (de) 2008-09-11 2011-01-27 Audi Ag Aluminiumgusslegierung und Verfahren zur Herstellung eines Gussbauteils
DE102012017711B4 (de) 2011-09-10 2018-10-18 Audi Ag Verfahren zum Wärmebehandeln eines Bauteils
DE102012008245B4 (de) * 2012-04-25 2020-07-02 Audi Ag Verfahren zum Aushärten eines Bauteils
EP2657360B1 (fr) 2012-04-26 2014-02-26 Audi Ag Alliage à coulée sous pression à base d'Al-Si présentant en particulier un aluminium secondaire
CN114107848B (zh) * 2021-11-24 2022-11-29 中国兵器科学研究院宁波分院 一种降低铝合金薄壁构件残余应力的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU345224A1 (ru) * 1970-03-13 1972-07-14 Б. Б. Гул , А. С. Ковалев Литейный сплав на основе алюминия
EP0368005A1 (fr) * 1988-10-12 1990-05-16 Aluminum Company Of America Procédé de fabrication d'un produit mince à base d'aluminium, non recristallisé, laminé à plat et thermiquement traité
DE19925666C1 (de) * 1999-06-04 2000-09-28 Vaw Motor Gmbh Zylinderkopf- und Motorblockgußteil
US20020088509A1 (en) * 2000-12-15 2002-07-11 Andreas Barth Recrystallization-hardenable aluminum cast alloy and component

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63179041A (ja) * 1987-01-20 1988-07-23 Showa Alum Corp 表面平滑性に優れたシリンダ用アルミニウム合金
US5061327A (en) * 1990-04-02 1991-10-29 Aluminum Company Of America Method of producing unrecrystallized aluminum products by heat treating and further working
JP3364402B2 (ja) * 1996-01-26 2003-01-08 日本特殊陶業株式会社 Ａｌ金属接合体
US6562154B1 (en) * 2000-06-12 2003-05-13 Aloca Inc. Aluminum sheet products having improved fatigue crack growth resistance and methods of making same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU345224A1 (ru) * 1970-03-13 1972-07-14 Б. Б. Гул , А. С. Ковалев Литейный сплав на основе алюминия
EP0368005A1 (fr) * 1988-10-12 1990-05-16 Aluminum Company Of America Procédé de fabrication d'un produit mince à base d'aluminium, non recristallisé, laminé à plat et thermiquement traité
DE19925666C1 (de) * 1999-06-04 2000-09-28 Vaw Motor Gmbh Zylinderkopf- und Motorblockgußteil
US20020088509A1 (en) * 2000-12-15 2002-07-11 Andreas Barth Recrystallization-hardenable aluminum cast alloy and component

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ASM INTERNATIONAL: "ASM Speciality Handbook - Aluminium and Aluminium Alloys", 1993, ASM INTERNATIONAL, USA, XP002329802 *
DUBINKO V KH ET AL: "EXPERIENCE OF USING SECONDARY ZINC SILUMIN AK9Ts6", MET SCI HEAT TREAT MAY-JUN 1987, vol. 29, no. 5-6, May 1987 (1987-05-01), pages 387 - 389, XP002329801 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051162A2 (fr) * 2005-10-28 2007-05-03 Alcoa Inc. Alliage d'al-si-mg a resistance elevee aux chocs et procedes destines a la production d'un moulage automobile
WO2007051162A3 (fr) * 2005-10-28 2008-04-03 Alcoa Inc Alliage d'al-si-mg a resistance elevee aux chocs et procedes destines a la production d'un moulage automobile
US9353430B2 (en) 2005-10-28 2016-05-31 Shipston Aluminum Technologies (Michigan), Inc. Lightweight, crash-sensitive automotive component
DE102010007531A1 (de) * 2010-02-11 2011-08-11 Audi Ag, 85057 Verfahren zum Herstellen eines Karosseriebauteils
WO2011098213A3 (fr) * 2010-02-11 2011-12-08 Trimet Aluminium Ag Procédé et dispositif destinés à la fabrication de pièces de suspensions de véhicules à moteur
DE102010007531B4 (de) * 2010-02-11 2014-11-27 Audi Ag Verfahren zum Herstellen eines Karosseriebauteils
US9446447B2 (en) 2010-02-11 2016-09-20 Ksm Castings Group Gmbh Method and device for producing motor vehicle chassis parts
US10041161B2 (en) 2010-02-11 2018-08-07 Trimet Aluminium Se Method and device for producing motor vehicle chassis parts

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Publication number Publication date
DE102004013777B4 (de) 2005-12-29
DE102004013777A1 (de) 2005-10-06

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