CA2465683A1 - Aluminum-silicon alloys having improved mechanical properties - Google Patents
Aluminum-silicon alloys having improved mechanical properties Download PDFInfo
- Publication number
- CA2465683A1 CA2465683A1 CA002465683A CA2465683A CA2465683A1 CA 2465683 A1 CA2465683 A1 CA 2465683A1 CA 002465683 A CA002465683 A CA 002465683A CA 2465683 A CA2465683 A CA 2465683A CA 2465683 A1 CA2465683 A1 CA 2465683A1
- Authority
- CA
- Canada
- Prior art keywords
- silicon
- article
- average
- annealing
- less
- 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
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Conductive Materials (AREA)
- Silicon Compounds (AREA)
- Heat Treatment Of Articles (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Ceramic Products (AREA)
- Powder Metallurgy (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a heat treatment method for articles composed of substantially Al-Si alloys that contain a eutectic phase, and to articles th at consist of these alloys. In order to improve the ductility of the material o r to increase the elongation after fracture, an annealing process is carried o ut in the form of shock annealing, said process comprising the following steps: rapidly heating the material to an annealing temperature of from 400 to 555 ~C, maintaining it at this temperature for a period of not more than 14.8 minutes, force-cooling it, and then aging the article. The inventive article comprises spheroidized silicon precipitations in the eutectic phase portion with an average plane of section ASi of less than 4 .mu.m2 and/or an average distance between the silicon particles .lambda.Si of less than 4 .mu.m and/or an average spheroidization density .xi.Si of greater than 10.
Claims (11)
1. A thermal-treatment process for improving the ductility of articles consisting of a cast or wrought alloy with a eutectic phase, which contains preferably refined or purified aluminum-silicon or optionally other alloys and/or impurities, said articles being subjected to an annealing treatment and subsequent aging, characterized in that the annealing is effected as shock annealing comprising rapid heating of the material to an annealing temperature of 400°C to 555°C, maintaining it at this temperature for a holding period from preferably at least 1.7 minutes to at most 14.8 minutes, and subsequently force cooling it to essentially room temperature.
2. The process as defined in claim 1, characterized in that the shock annealing is effected with a holding time of less than 6.8 minutes, preferably with a time span from at least 1.7 minutes to a maximum of 5 minutes if necessary.
3. The process as defined in any one of claims 1 or 2, characterized in that the aging of the article, which follows the shock annealing, is effected as thermal aging at a temperature in the range between 150°C and 200°C with a period from 1 to 14 hours.
4. The process as defined in any one of claims 1 to 3, characterized in that the aging of the article that follows the shock annealing is effected as cold aging at essentially room temperature.
5. An article of an aluminum-silicon alloy, optionally containing other alloys and/or impurities such as magnesium, manganese, iron and the like, with a eutectic phase, consisting essentially of an .alpha.Al matrix and silicon exudates, characterized in that the silicon exudates are spheroidized in the eutectic phase and have an average cross-sectional area A Si of less than 4µm2.
A Si = average surface of the silicon particles in µm2 A = average surface of the silicon particles per image, in µm2 n = number of images sampled
A Si = average surface of the silicon particles in µm2 A = average surface of the silicon particles per image, in µm2 n = number of images sampled
6. The article as defined in claim 5, characterized in that the silicon exudates in the eutectic phase are spheroidized and have an average cross-sectional area of less than 2µm2.
7. An article of an aluminum-silicon alloy, optionally containing other alloys and/or impurities such as magnesium, manganese, iron and the like, with a eutectic phase, consisting essentially of an .alpha.Al matrix and silicon exudates, characterized in that the average free path length between the silicon particles .lambda.Si in the eutectic phase defined as the root of a square measured surface divided by the number of silicon particles contained within it is of as a size that is less than 4um.
wherein .lambda. Si; = average spacing between of the silicon particles in µ2 A Quadrat = square reference surface, in µm2 N Silicon = number of silicon particles n = number of images sampled
wherein .lambda. Si; = average spacing between of the silicon particles in µ2 A Quadrat = square reference surface, in µm2 N Silicon = number of silicon particles n = number of images sampled
8. The article as defined in claim 7, characterized in that the average free path lengths are of a size that is less than 3µm, and preferably less than 2µm.
9. An article of an aluminum-silicon alloy, if necessary with an enriching element and optionally with other alloys and/or impurities such as magnesium, manganese, iron and the like, with a eutectic phase, consisting essentially of an .alpha.Al matrix and silicon exudates, characterized in that the average spheroidization density .zeta.Si, defined as the number of spheroidized eutectic particles per 100µm2 is greater than 10.
.zeta.Si = Mean spheroidization density of the eutectic Si particles N Silicon = Number of silicon particles A = Reference surface in µm2 n = Number of images sampled
.zeta.Si = Mean spheroidization density of the eutectic Si particles N Silicon = Number of silicon particles A = Reference surface in µm2 n = Number of images sampled
10. The article as defined in claim 9, characterized in that the average spheroidization density is greater than 20.
11. The article as defined in any one of claims 5 to 10, produced according to the method set out in any one of claims 1 to 4, characterized in that this is manufactured by the thixocasting method.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1733/2001 | 2001-11-05 | ||
| AT0173301A AT411269B (en) | 2001-11-05 | 2001-11-05 | ALUMINUM-SILICON ALLOYS WITH IMPROVED MECHANICAL PROPERTIES |
| PCT/AT2002/000309 WO2003040423A1 (en) | 2001-11-05 | 2002-11-05 | Aluminum-silicon alloys having improved mechanical properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2465683A1 true CA2465683A1 (en) | 2003-05-15 |
| CA2465683C CA2465683C (en) | 2011-01-18 |
Family
ID=3688773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2465683A Expired - Fee Related CA2465683C (en) | 2001-11-05 | 2002-11-05 | Aluminum-silicon alloys having improved mechanical properties |
Country Status (15)
| Country | Link |
|---|---|
| US (2) | US20050000608A1 (en) |
| EP (1) | EP1442150B1 (en) |
| JP (1) | JP2005508446A (en) |
| KR (1) | KR20050043748A (en) |
| CN (1) | CN100366782C (en) |
| AT (2) | AT411269B (en) |
| CA (1) | CA2465683C (en) |
| DE (1) | DE50209192D1 (en) |
| DK (1) | DK1442150T3 (en) |
| ES (1) | ES2280578T3 (en) |
| HK (1) | HK1071171A1 (en) |
| HU (1) | HUP0401962A2 (en) |
| PT (1) | PT1442150E (en) |
| SI (1) | SI1442150T1 (en) |
| WO (1) | WO2003040423A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8950468B2 (en) | 2007-05-11 | 2015-02-10 | The Boeing Company | Cooling system for aerospace vehicle components |
| DE102008024524A1 (en) * | 2008-05-21 | 2009-11-26 | Bdw Technologies Gmbh | Method and plant for producing a cast component |
| DE102011105447B4 (en) * | 2011-06-24 | 2019-08-22 | Audi Ag | Process for the production of aluminum die-cast parts |
| CN107586939A (en) * | 2017-09-13 | 2018-01-16 | 中信戴卡股份有限公司 | A kind of heat treatment method for aluminium alloy casting rotation wheel |
| CN109706411A (en) * | 2019-02-18 | 2019-05-03 | 东莞宏幸智能科技有限公司 | A kind of solid smelting furnace of aluminum alloy spare part production |
| CN115961223A (en) * | 2022-12-19 | 2023-04-14 | 湖南中创空天新材料股份有限公司 | Method for removing residual stress |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747807B2 (en) * | 1992-03-17 | 1995-05-24 | スカイアルミニウム株式会社 | Method for producing rolled aluminum alloy plate for forming |
| JPH07166285A (en) * | 1993-06-08 | 1995-06-27 | Shinko Alcoa Yuso Kizai Kk | Hardened al alloy sheet by baking and production thereof |
| JPH11613A (en) * | 1997-06-13 | 1999-01-06 | Kawasaki Steel Corp | Manufacture of aluminum alloy plate with superior molding properties and coat baking/curing properties |
| US6040059A (en) * | 1997-11-18 | 2000-03-21 | Luk Gmbh & Co. | Component made of an aluminium silicon cast alloy |
| US5985349A (en) * | 1998-11-12 | 1999-11-16 | Kraft Foods, Inc. | Method for manufacture of grated cheese |
| DE19901508A1 (en) * | 1999-01-16 | 2000-08-17 | Bayerische Motoren Werke Ag | Process for the production of castings from aluminum alloys |
| DE19925666C1 (en) * | 1999-06-04 | 2000-09-28 | Vaw Motor Gmbh | Cast cylinder head and engine block component is made of an aluminum-silicon alloy containing aluminum-nickel, aluminum-copper, aluminum-manganese and aluminum-iron and their mixed phases |
| JP2001316747A (en) * | 1999-08-31 | 2001-11-16 | Asahi Tec Corp | NON-Cu CAST Al ALLOY AND HEAT TREATING METHOD THEREFOR |
| JP3857503B2 (en) * | 2000-07-26 | 2006-12-13 | 大同メタル工業株式会社 | Aluminum bearing alloy |
| ATE503982T1 (en) * | 2002-01-11 | 2011-04-15 | Gen Hospital Corp | DEVICE FOR OCT IMAGE ACQUISITION WITH AXIAL LINE FOCUS FOR IMPROVED RESOLUTION AND DEPTH OF FIELD |
-
2001
- 2001-11-05 AT AT0173301A patent/AT411269B/en not_active IP Right Cessation
-
2002
- 2002-11-05 EP EP02774155A patent/EP1442150B1/en not_active Expired - Lifetime
- 2002-11-05 SI SI200230502T patent/SI1442150T1/en unknown
- 2002-11-05 DE DE50209192T patent/DE50209192D1/en not_active Expired - Lifetime
- 2002-11-05 ES ES02774155T patent/ES2280578T3/en not_active Expired - Lifetime
- 2002-11-05 CN CNB028217861A patent/CN100366782C/en not_active Expired - Fee Related
- 2002-11-05 PT PT02774155T patent/PT1442150E/en unknown
- 2002-11-05 WO PCT/AT2002/000309 patent/WO2003040423A1/en active Application Filing
- 2002-11-05 JP JP2003542667A patent/JP2005508446A/en active Pending
- 2002-11-05 AT AT02774155T patent/ATE350507T1/en active
- 2002-11-05 DK DK02774155T patent/DK1442150T3/en active
- 2002-11-05 CA CA2465683A patent/CA2465683C/en not_active Expired - Fee Related
- 2002-11-05 HU HU0401962A patent/HUP0401962A2/en unknown
- 2002-11-05 KR KR1020047006793A patent/KR20050043748A/en active Search and Examination
-
2004
- 2004-05-04 US US10/837,665 patent/US20050000608A1/en not_active Abandoned
-
2005
- 2005-02-04 HK HK05100996A patent/HK1071171A1/en not_active IP Right Cessation
-
2010
- 2010-04-12 US US12/758,381 patent/US20100193084A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1442150A1 (en) | 2004-08-04 |
| CA2465683C (en) | 2011-01-18 |
| JP2005508446A (en) | 2005-03-31 |
| EP1442150B1 (en) | 2007-01-03 |
| ATE350507T1 (en) | 2007-01-15 |
| SI1442150T1 (en) | 2007-06-30 |
| HK1071171A1 (en) | 2005-07-08 |
| KR20050043748A (en) | 2005-05-11 |
| DK1442150T3 (en) | 2007-05-14 |
| DE50209192D1 (en) | 2007-02-15 |
| US20050000608A1 (en) | 2005-01-06 |
| US20100193084A1 (en) | 2010-08-05 |
| HUP0401962A2 (en) | 2005-01-28 |
| ES2280578T3 (en) | 2007-09-16 |
| PT1442150E (en) | 2007-04-30 |
| AT411269B (en) | 2003-11-25 |
| ATA17332001A (en) | 2003-04-15 |
| CN100366782C (en) | 2008-02-06 |
| WO2003040423A1 (en) | 2003-05-15 |
| CN1602368A (en) | 2005-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20171106 |