EP1657319A1 - Alliage d'aluminium - Google Patents
Alliage d'aluminium Download PDFInfo
- Publication number
- EP1657319A1 EP1657319A1 EP05021924A EP05021924A EP1657319A1 EP 1657319 A1 EP1657319 A1 EP 1657319A1 EP 05021924 A EP05021924 A EP 05021924A EP 05021924 A EP05021924 A EP 05021924A EP 1657319 A1 EP1657319 A1 EP 1657319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- weight
- max
- silver
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- C22C21/02—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
- 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 aluminum casting alloy. It also has a method for producing a casting of such a casting alloy and the use of the casting alloy to the object.
- Cast alloys from the Al-Si-Mg system in particular Al-Si5-10Mg and AlSi5-10MgCu are used in the automotive industry for sand casting and chill casting of cylinder heads and engine blocks.
- the mechanical properties, in particular the yield strength of the castings leaves much to be desired.
- silver-containing aluminum casting alloys are known, for example AlCu4TiMgAg, wherein the silver content is 0.4 to 1 wt .-%.
- these alloys have extremely poor castability, especially unsatisfactory interdendritic power. This is reflected in their hot crack tendency, so that they are unsuitable for casting engine blocks and the like, since there even small cracks lead to component failure. As a result, they also contain no silicon, because this would increase the tendency of hot cracking.
- the silver-containing aluminum casting alloy shows lower thermal conductivity over Al-Si-Mg (Cu) alloys. However, a low thermal conductivity leads to an engine block / cylinder head a high temperature and is therefore equivalent to a reduced yield strength.
- an aluminum casting alloy which contains 5 to 12% by weight of silicon, 0 to 0.8% by weight of magnesium and at least one additive from the group consisting of copper, silver, calcium, manganese, zinc and tin contains in an amount that should correspond exactly to the solubility at the maximum operating temperature of the respective component.
- EP 0 445 684 A1 discloses an aluminum alloy which, if it has manganese, iron, silicon and titanium according to the general formula given therein, contains at least 15% by weight of silver.
- the object of the invention is to provide a cast alloy of good castability with improved mechanical properties, in particular improved yield strength.
- an aluminum casting alloy having either the following composition 5 - 11% silicon 0.1 - 0.8% magnesium 0.05 - 5% silver Max. 0.30% iron Max. 0.20% titanium Manganese max. 2/3 of the iron content Max. 0.10% zinc as well as aluminum as rest and further impurities individually max. 0.03%, total 0.1% or the following composition 5 - 11% silicon 0.1 - 0.8% magnesium 0.2 - 0.8% copper 0.05 - 5% silver Max. 0.30% iron Max. 0.20% titanium Manganese max. 2/3 of the iron content Max. 0.10% zinc as well as aluminum as rest and further impurities individually max. 0.03%, total 0.1% having. All percentages are by weight unless otherwise stated.
- the magnesium content is preferably 0.25 to 0.50%, the iron content preferably max. 0.20%, the titanium content preferably max. 0.10%.
- the manganese content is max. 2/3 of the iron content, preferably max. 0.05% and the zinc content preferably max. 0.05%, while the copper content is preferably 0.4-0.6%.
- the iron content and / or titanium content of the alloy according to the invention is normally not less than 0.03 wt .-%.
- the upper limit of the silver content is preferably for reasons of cost, preferably at most 1%.
- the lower one Limit is 0.05%, but in practice the silver content is more than 0.10%.
- the silver is added to a primary alloy in the appropriate amount.
- AlSi7Mg or Al-Si7MgCu0,5 can be used as the primary alloy.
- the castings cast from the alloy according to the invention are preferably subjected to solution heat treatment and quenching with water or optionally with air. Thereafter, aging takes place at about 150-200 ° C. for several hours. In addition to this heat treatment, post aging is performed for about 200 hours to simulate engine operation. In the downstream castings, a significant improvement in the yield strength is observed.
- the casting alloy according to the invention is particularly suitable for sand and chill casting, especially of engine core components, in particular the engine block, cylinder head, crankcase and the like cast components, especially in the automotive industry.
- the castings were solution-annealed for several hours, quenched with water, paged out (T64 / T6 heat treatment), additionally stored at about 250 ° C. for about 200 hours and then drawn cold.
- the results are of particular importance, because the post-aging of about 200 hours at 250 ° C is to be regarded as a simulation of the engine operation. That is, the addition of silver, the heat resistance of, for example, an engine block / cylinder head is substantially increased, and thus reduces the thermal shock sensitivity accordingly.
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- 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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410053746 DE102004053746A1 (de) | 2004-11-06 | 2004-11-06 | Aluminium-Gusslegierung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1657319A1 true EP1657319A1 (fr) | 2006-05-17 |
EP1657319B1 EP1657319B1 (fr) | 2008-09-03 |
Family
ID=35355522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050021924 Expired - Fee Related EP1657319B1 (fr) | 2004-11-06 | 2005-10-07 | Utilisation d'un alliage d'alluminium |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1657319B1 (fr) |
DE (2) | DE102004053746A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1882754A1 (fr) | 2006-07-27 | 2008-01-30 | FAGOR, S.Coop | Alliage d'aluminium |
EP1882753A1 (fr) * | 2006-07-27 | 2008-01-30 | Fagor, S.Coop. | Alliage d'aluminium |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1255456B (de) | 1964-02-01 | 1967-11-30 | Svenska Metallverken Ab | Schweisszusatzwerkstoff zum korrosionsfesten Schmelzschweissen von Legierungen auf Aluminium-Basis, insbesondere AlZnMg-Legierungen |
US3765877A (en) | 1972-11-24 | 1973-10-16 | Olin Corp | High strength aluminum base alloy |
EP0445684A1 (fr) | 1990-03-06 | 1991-09-11 | Ykk Corporation | Alliages à base d'aluminium à haute résistance et résistant à la chaleur |
AT3653U1 (de) | 1999-08-05 | 2000-06-26 | Avl List Gmbh | Aluminium-gusslegierung |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2557144A1 (fr) * | 1983-12-22 | 1985-06-28 | Fonderie Alcoa Mg Sa | Alliage d'aluminium a proprietes ameliorees |
DE10026626C5 (de) * | 1999-06-04 | 2006-10-05 | Vaw Aluminium Ag | Zylinderkopf- und Motorblockgußteil |
-
2004
- 2004-11-06 DE DE200410053746 patent/DE102004053746A1/de not_active Withdrawn
-
2005
- 2005-10-07 EP EP20050021924 patent/EP1657319B1/fr not_active Expired - Fee Related
- 2005-10-07 DE DE200550005249 patent/DE502005005249D1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1255456B (de) | 1964-02-01 | 1967-11-30 | Svenska Metallverken Ab | Schweisszusatzwerkstoff zum korrosionsfesten Schmelzschweissen von Legierungen auf Aluminium-Basis, insbesondere AlZnMg-Legierungen |
US3765877A (en) | 1972-11-24 | 1973-10-16 | Olin Corp | High strength aluminum base alloy |
EP0445684A1 (fr) | 1990-03-06 | 1991-09-11 | Ykk Corporation | Alliages à base d'aluminium à haute résistance et résistant à la chaleur |
AT3653U1 (de) | 1999-08-05 | 2000-06-26 | Avl List Gmbh | Aluminium-gusslegierung |
Non-Patent Citations (4)
Title |
---|
FEIKUS, F. J. (VAW ALUMINIUM): "Optimization of aluminum-silicon-cast alloys for cylinder heads.; Zylinderkopfe .", GIESSEREI-PRAXIS, (FEB 1999), 2, P. 50-57, 6 REFERENCE(S), NUMERICAL DATA; GRAPHS., GERMANY ISSN: 0016-9781, 1999, XP009057734 * |
H. FUCHS, H.-J. HAGEBÖLLING, F. HUSMEIER, M. WAPPELHORST: "Legierungsentwicklung für hochbeanspruchte Diesel-Zylinderköpfe", GIESSEREI-RUNDSCHAU, no. 50, 2003, pages 66 - 71, XP009057735 * |
H. FUCHS, M. WAPPELHORST: "Leichtmetallwerkstoffe für hochbelastete Motorblöcke und Zylinderköpfe", MTZ, no. 64, 2003, pages 868 - 875, XP002356404 * |
VASILAKOS, A. N. ET AL: "Thermodynamic analysis and mechanical properties of cast aluminum alloy A357 with Cu, Ag, and Sm additions", METALL (HEIDELBERG) , 50(9), 556-560 CODEN: MTLLAF; ISSN: 0026-0746, 1996, XP009057849 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1882754A1 (fr) | 2006-07-27 | 2008-01-30 | FAGOR, S.Coop | Alliage d'aluminium |
EP1882753A1 (fr) * | 2006-07-27 | 2008-01-30 | Fagor, S.Coop. | Alliage d'aluminium |
Also Published As
Publication number | Publication date |
---|---|
DE502005005249D1 (de) | 2008-10-16 |
EP1657319B1 (fr) | 2008-09-03 |
DE102004053746A1 (de) | 2006-05-11 |
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