WO2005106057A2 - Heat treatable al-zn-mg alloy for aerospace and automotive castings - Google Patents
Heat treatable al-zn-mg alloy for aerospace and automotive castings Download PDFInfo
- Publication number
- WO2005106057A2 WO2005106057A2 PCT/US2005/013766 US2005013766W WO2005106057A2 WO 2005106057 A2 WO2005106057 A2 WO 2005106057A2 US 2005013766 W US2005013766 W US 2005013766W WO 2005106057 A2 WO2005106057 A2 WO 2005106057A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aluminum alloy
- concentration
- less
- shaped casting
- alloy
- Prior art date
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
Definitions
- the most commonly used group of alloys Al-Si 7 -Mg
- cast materials made of A356.0 the most commonly used Al-Si -Mg alloy, can reliably guarantee ultimate tensile strength of 290 MPa (42,060 psi), and tensile yield strength of 220 MPa (31,908 psi) with elongations of 8% or greater.
- a variety of alternate alloys exist and are registered that exhibit higher strength than the Al-Si 7 -Mg alloys. However, these exhibit problems in castability, corrosion potential or fluidity that are not readily overcome. The alternate alloys are therefore less suitable for use.
- the alloy of the present invention is an Al-Zn-Mg base alloy for low pressure permanent or semi-permanent mold, squeeze, high pressure die, pressure or gravity casting, lost foam, investment casting, N-mold, or sand mold casting with the following composition ranges (all in weight percent): Zn: about 3.5-5.5%, Mg: about 0.8-1.5%, Si: less than about 1.0%, Mn: less than about 0.30%, Fe and other incidental impurities: less than about 0.30%. [0008] Silicon up to about 1.0% may be employed to improve castability. Lower levels of silicon may be employed to increase strength. For some applications, manganese up to about 0.3%) may be employed to improve castability.
- the alloy may also contain grain refiners such as titanium diboride, TiB 2 or titanium carbide, TiC and/or anti-recrystallization agents such as zirconium or scandium. If titanium diboride is employed as a grain refiner, the concentration of boron in the alloy may be in a range from 0.0025%) to 0.05%. Likewise, if titanium carbide is employed as a grain refiner, the concentration of carbon in the alloy may be in the range from 0.0025% to 0.05%. Typical grain refiners are aluminum alloys containing TiC or TiB 2 .
- Zirconium if used to prevent grain growth during solution heat treatment, is generally employed in a range below 0.2%. Scandium may also be used in a range below 0.3%.
- the purpose of the present invention is to provide a range of aluminum alloys having good strength, good castability for forming shaped castings, good corrosion resistance and good thermal shock resistance. A fine grain size is often desirable for strength and for appearance, particularly for components which are anodized and then coated with a clear finish layer.
- Summary of the Invention [0012]
- the present invention is an aluminum alloy including from about 3.5-5.5% Zn, from about 0.8-1.5%Mg.
- the present invention is a heat treatable shaped casting of an aluminum alloy including from about 3.5-5.5%) Zn, from about 0.8-1.5%) Mg, and less than about 1%) Si, less than about 0.30% Mn, and less than 0.30% Fe and other incidental impurities.
- the present invention is a method of preparing a heat treatable aluminum alloy shaped casting.
- the method includes preparing a molten mass of an aluminum alloy including from about 3.5-5.5% Zn, from about 0.8-1.5%) Mg, and less than about 1%) Si, less than about 0.30% Mn, and less than 0.30% Fe and other incidental impurities.
- the method further includes casting at least a portion of the molten mass in a mold configured to produce the shaped casting, permitting the molten mass to solidify, and removing the shaped casting from the mold.
- the first alloy shown in Table 1 was Al-4.5Zn-l.2Mg. Two samples were tested, each in T5 and T6 tempers. The tensile strength and yield strength are presented in megapascals, and the elongation in percent is presented, for two samples of the alloy, in both T5 and T6 tempers. This alloy is an example of the present invention.
- the second alloy shown in Table 1 also has a composition in the range of the present invention. It contains Al-4.5Zn-l.2Mg-0.4Si. This shows lower values for tensile and yield strength than the previous alloy in T5 temper. However, it has significantly higher values for tensile strength, yield strength and elongation in T6 temper than did the previous alloy.
- the third alloy shown in Table 1 is not within the composition range of the present invention. It is presented for comparison. The third alloy has higher values for tensile and yield strength and higher elongation values in T5 temper than the second alloy in T5 temper, but lower values for tensile and yield strength and lower value for elongation than the second alloy in T6 temper.
- the fourth alloy shown in Table 1 is also not within the composition range of the present invention. It, also, is presented for comparison. The data presented illustrate the effect of zirconium, probably for preventing grain growth. The results for the T6 temper show very high values for tensile strength, yield strength and elongation. [0022] Mechanical properties of shaped castings of an alloy according to the present invention were tested in a first plant trial, and the results are presented in Table 2. Table 2
- the composition for the first plant trial was Al-3.5Zn-0.97Mg.
- the table presents tensile strength and yield strength in megapascals, as well as elongation in percent. Two samples were tested in T5 temper, and two samples of the as-cast material were tested. It is noted that the elongation for the as-cast material had the extraordinary values of 15.03 and 15.95%.
- Tests were also made in a second plant trial on an alloy containing slightly more magnesium than the alloy of Table 1. Data for the second plant trial are presented in Table 3. Table 3
- Table 3 The data in Table 3 are for an alloy containing Al-3.5 Zn- 1.1 Mg. This is an alloy according to the present invention. Data are presented for three different heat treatments. The first was 160 °C for 1 hour, the second was 160 °C for six hours and the third was 143 °C for 32 hours. The tensile strength and yield strength values in this table are expressed in megapascals, and the elongation is expressed in percent. [0026] Table 4 presents data for the same alloy as the samples in Table 3. The samples reported in Table 4 were subjected to a T6 heat treatment that consisted of 471 °C for 3 hours, and then 527 °C for 10 hours followed by cold water quench. The samples were then aged as reported in Table 4, and the stress results in Table 4 were then obtained. The first line in the table is for a sample which was naturally aged only. Table 4
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05743381A EP1759028A4 (en) | 2004-04-22 | 2005-04-22 | Heat treatable al-zn-mg alloy for aerospace and automotive castings |
MXPA06012242A MXPA06012242A (en) | 2004-04-22 | 2005-04-22 | Heat treatable al-zn-mg alloy for aerospace and automotive castings. |
JP2007509666A JP2007534839A (en) | 2004-04-22 | 2005-04-22 | Heat-treatable Al-Zn-Mg alloys for aerospace and automotive castings |
AU2005238478A AU2005238478A1 (en) | 2004-04-22 | 2005-04-22 | Heat treatable AL-ZN-MG alloy for aerospace and automotive castings |
CA002564078A CA2564078A1 (en) | 2004-04-22 | 2005-04-22 | Heat treatable al-zn-mg alloy for aerospace and automotive castings |
NO20065386A NO20065386L (en) | 2004-04-22 | 2006-11-22 | Heat-treated Al-Zn-Mg alloy for stuffing for the aviation and automotive industry |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56481304P | 2004-04-22 | 2004-04-22 | |
US60/564,813 | 2004-04-22 | ||
US11/111,585 US20050238529A1 (en) | 2004-04-22 | 2005-04-21 | Heat treatable Al-Zn-Mg alloy for aerospace and automotive castings |
US11/111,585 | 2005-04-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2005106057A2 true WO2005106057A2 (en) | 2005-11-10 |
WO2005106057A3 WO2005106057A3 (en) | 2006-01-26 |
WO2005106057B1 WO2005106057B1 (en) | 2006-03-02 |
Family
ID=35136636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/013766 WO2005106057A2 (en) | 2004-04-22 | 2005-04-22 | Heat treatable al-zn-mg alloy for aerospace and automotive castings |
Country Status (9)
Country | Link |
---|---|
US (1) | US20050238529A1 (en) |
EP (1) | EP1759028A4 (en) |
JP (1) | JP2007534839A (en) |
KR (1) | KR20070009719A (en) |
AU (1) | AU2005238478A1 (en) |
CA (1) | CA2564078A1 (en) |
MX (1) | MXPA06012242A (en) |
NO (1) | NO20065386L (en) |
WO (1) | WO2005106057A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10301710B2 (en) | 2005-01-19 | 2019-05-28 | Otto Fuchs Kg | Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060289093A1 (en) * | 2005-05-25 | 2006-12-28 | Howmet Corporation | Al-Zn-Mg-Ag high-strength alloy for aerospace and automotive castings |
US8083871B2 (en) | 2005-10-28 | 2011-12-27 | Automotive Casting Technology, Inc. | High crashworthiness Al-Si-Mg alloy and methods for producing automotive casting |
EP1978120B1 (en) * | 2007-03-30 | 2012-06-06 | Technische Universität Clausthal | Aluminium-silicon alloy and method for production of same |
ES2330713B2 (en) * | 2008-06-11 | 2010-04-19 | Abinash Banerji | ALUMINUM BASED GRAIN TUNER. |
US8349462B2 (en) | 2009-01-16 | 2013-01-08 | Alcoa Inc. | Aluminum alloys, aluminum alloy products and methods for making the same |
FR2968675B1 (en) | 2010-12-14 | 2013-03-29 | Alcan Rhenalu | 7XXX THICK-ALLOY PRODUCTS AND METHOD OF MANUFACTURE |
CN111020314A (en) * | 2013-09-30 | 2020-04-17 | 苹果公司 | Aluminum alloy with high strength and attractive appearance |
DE102014224229A1 (en) | 2014-11-27 | 2016-06-02 | Federal-Mogul Nürnberg GmbH | Method for producing an engine component, engine component and use of an aluminum alloy |
US11345980B2 (en) | 2018-08-09 | 2022-05-31 | Apple Inc. | Recycled aluminum alloys from manufacturing scrap with cosmetic appeal |
CN114214547B (en) * | 2021-09-30 | 2022-08-23 | 中国航发北京航空材料研究院 | Aluminum-zinc-magnesium-scandium alloy and preparation method thereof |
Family Cites Families (13)
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FR917559A (en) * | 1945-11-20 | 1947-01-15 | Aluminum-zinc-magnesium alloys | |
US3616420A (en) * | 1968-11-25 | 1971-10-26 | British Aluminium Co Ltd | Aluminium base alloys and anodes |
JPS61186445A (en) * | 1985-02-12 | 1986-08-20 | Riyouka Keikinzoku Kogyo Kk | Metallic mold for molding resin |
JPS61227143A (en) * | 1985-03-29 | 1986-10-09 | Sumitomo Light Metal Ind Ltd | Aluminum alloy for high pressure casting excelling in strength and suitable for welding structures |
JPS62250149A (en) * | 1986-04-24 | 1987-10-31 | Kobe Steel Ltd | Aluminum alloy for bicycle |
US4873054A (en) * | 1986-09-08 | 1989-10-10 | Kb Alloys, Inc. | Third element additions to aluminum-titanium master alloys |
JP3594272B2 (en) * | 1995-06-14 | 2004-11-24 | 古河スカイ株式会社 | High strength aluminum alloy for welding with excellent stress corrosion cracking resistance |
JPH10280081A (en) * | 1997-04-08 | 1998-10-20 | Sky Alum Co Ltd | Frame-shaped member with high strength and high precision, made of al-zn-mg alloy, and its production |
JPH10298692A (en) * | 1997-04-22 | 1998-11-10 | Sky Alum Co Ltd | Frame-shaped member with high strength and high precision, and its production |
US20010028861A1 (en) * | 1997-12-17 | 2001-10-11 | Que-Tsang Fang | High strength Al-Zn-Mg alloy for making shaped castings including vehicle wheels and structural components |
JP4818509B2 (en) * | 2000-12-04 | 2011-11-16 | 新日本製鐵株式会社 | Paint bake hardening and press forming aluminum alloy plate and method for producing the same |
EP1229141A1 (en) * | 2001-02-05 | 2002-08-07 | ALUMINIUM RHEINFELDEN GmbH | Cast aluminium alloy |
JP3852915B2 (en) * | 2001-11-05 | 2006-12-06 | 九州三井アルミニウム工業株式会社 | Method for producing semi-melt molded billet of aluminum alloy for transportation equipment |
-
2005
- 2005-04-21 US US11/111,585 patent/US20050238529A1/en not_active Abandoned
- 2005-04-22 AU AU2005238478A patent/AU2005238478A1/en not_active Abandoned
- 2005-04-22 MX MXPA06012242A patent/MXPA06012242A/en unknown
- 2005-04-22 CA CA002564078A patent/CA2564078A1/en not_active Abandoned
- 2005-04-22 JP JP2007509666A patent/JP2007534839A/en active Pending
- 2005-04-22 EP EP05743381A patent/EP1759028A4/en not_active Withdrawn
- 2005-04-22 KR KR1020067024487A patent/KR20070009719A/en not_active Application Discontinuation
- 2005-04-22 WO PCT/US2005/013766 patent/WO2005106057A2/en active Application Filing
-
2006
- 2006-11-22 NO NO20065386A patent/NO20065386L/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of EP1759028A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10301710B2 (en) | 2005-01-19 | 2019-05-28 | Otto Fuchs Kg | Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product |
Also Published As
Publication number | Publication date |
---|---|
US20050238529A1 (en) | 2005-10-27 |
WO2005106057A3 (en) | 2006-01-26 |
MXPA06012242A (en) | 2007-01-31 |
CA2564078A1 (en) | 2005-11-10 |
KR20070009719A (en) | 2007-01-18 |
AU2005238478A1 (en) | 2005-11-10 |
NO20065386L (en) | 2007-01-12 |
EP1759028A2 (en) | 2007-03-07 |
JP2007534839A (en) | 2007-11-29 |
EP1759028A4 (en) | 2007-10-03 |
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