US2248185A - Heat treatment of aluminum base alloys - Google Patents
Heat treatment of aluminum base alloys Download PDFInfo
- Publication number
- US2248185A US2248185A US283995A US28399539A US2248185A US 2248185 A US2248185 A US 2248185A US 283995 A US283995 A US 283995A US 28399539 A US28399539 A US 28399539A US 2248185 A US2248185 A US 2248185A
- Authority
- US
- United States
- Prior art keywords
- alloy
- temperature
- treatment
- aluminum base
- per cent
- 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.)
- Expired - Lifetime
Links
- 229910045601 alloy Inorganic materials 0.000 title description 64
- 239000000956 alloy Substances 0.000 title description 64
- 238000010438 heat treatment Methods 0.000 title description 34
- 229910052782 aluminium Inorganic materials 0.000 title description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 20
- 239000000243 solution Substances 0.000 description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 16
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000010949 copper Substances 0.000 description 16
- 239000011701 zinc Substances 0.000 description 16
- 229910052725 zinc Inorganic materials 0.000 description 16
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 15
- 229910052749 magnesium Inorganic materials 0.000 description 15
- 239000011777 magnesium Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000000470 constituent Substances 0.000 description 11
- 238000010791 quenching Methods 0.000 description 10
- 230000000171 quenching effect Effects 0.000 description 10
- 230000032683 aging Effects 0.000 description 9
- 230000035882 stress Effects 0.000 description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 8
- 238000003483 aging Methods 0.000 description 8
- 229910052748 manganese Inorganic materials 0.000 description 8
- 239000011572 manganese Substances 0.000 description 8
- 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 8
- 238000011282 treatment Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 magneslum Chemical compound 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
-
- 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
Definitions
- This invention relates to aluminum base alloys containing zinc, magnesium, copper, and manganese, and is more particularly concerned with the treatment of such alloys to prevent corrosion thereof.
- aluminum base alloys I mean alloys containing more than 50 per cent aluminum.
- a large number of aluminum base alloys are susceptible to improvement in tensile strength, yield strength, hardness, and other physical properties by various thermal treatments.
- One of the most common of these treatments which is usually employed in combination with a subsequent precipitation or age-hardening treatment and is often referred to as a solution heat-treatment, consists in subjecting the alloy to a tem:- perature and for a time sufiicient tocause solution of a substantial quantity of the soluble elements of the alloy but below the fusion temperature of the alloys lowest melting point constituent. These elements then may be retained in solution by a relatively rapid cooling or quenching to room temperature.
- the strength, hardness and other properties of some aluminum alloys may be further improved if the alloys are permitted to stand or age for a few days, or are artificially aged at a temperature of about 200 F. to 350F. for a shorter period of time.
- the object of my invention is to improve theresistance to corrosion of articles of thermally treated aluminum base alloys containing zinc, magnesium, copper, and manganese, and espeto stress. More particularly, the object of the invention is to "provide such a method for-im-' proving the resistance to corrosion of articles of alloys of the class above described, following their solution heat-treatment, which avoids the distortion resulting from the drastic quenching or rapid cooling of such articles.
- the specific object of my invention is to provide a method for'improvingthe resistance to corrosion of such articles of aluminum basealloys containing-zinc, magnesium, copper, and manganese which have 1 been subjected to solution heat-treatment and have been cooled ata relatively slow rate and subsequently artificially aged. Other.
- objects ing, and artificial aging are the aluminum base alloys containing zinc, magnesium, copper, and manganese.
- Such alloys are heated to a temperature between about 850 F. and 1000 F. and maintained at that temperature for a period of from about 5 minutes to about 10 hours in order to place a substantial portion of the soluble constituent of the alloy in solution, and, following quenching to'normal temperature, they are aged usually for about 2 to 30 hours at a temperature between about 200 F. and about 350 F.
- These alloys develop high tensile and yield strengths and other desirable properties when treated as above described. However, unless they are very rapidly or drastically cooled, following age-hardening they sometimes develop a susceptibility to a type of intergranular corrosion when exposed to corrosive conditions. This attack is believed to be due to the precipitation within the metal of a portionofuthe soluble alloying constituent will appear in the following description of the invention.
- My invention is predicated upon the discovery that the resistance to corrosion of solution treated and relatively slowly quenched articles of aluminum base alloys containing zinc, magnesium, copper, and manganese may be increased if they are given a comparativelylow temperature heattreatment following the normal artificial agehardening thereof.
- This treatment preferably is carried out by heating the articles at the termination of their artificial age-hardening period for a duration of between about 15 minutes and about 2 hours at a temperature of about 350 F. to 450 F.
- the articles then may be cooled to room temperature in any convenient manner, as, for instance, bynatural cooling or by quenching, without distortion of their shape.
- This treatment may be practiced at very little expense and is adaptedto be carried out in the heat-treating equipment commonly used.
- the above described method has been found to be particularly adapted to aluminum base alloys containing between about 3 per cent and about 10 per cent zinc, between about 0.75 per cent and about 4 per cent magnesium, between about .05 per cent and about 3 per cent copper,
- the invention may be practiced with advantage to increase the resistance to stress corrosion of articles of other aluminum base alloys containing zinc, magneslum, copper, and manganese which have been cooled from the solution heat-treatment temperature at a relatively slow rate and subsequently age-hardened; and the invention may be utilized with particular advantage where itis desirable to avoid distortion of the shape 01' articles of suchalloys which are .to be subjected to solution heat-treatment and age-hardening.
- a method of heat-treating an aluminum base alloy containing zinc, magnesium, copper, and manganese which comprises heating the alloy at a temperature and for a time sufficient to place a substantial portion of its soluble constituent in solution, quenching the alloy, artificially aging the alloy, and subsequently heating the alloy between 350 F. and 450 F. for from about 15 2.
- a method of heat-treating an aluminum base alloy containing zinc, magnesium, copper, and manganese which comprises heating the alloy between 850 F. and 1000 F. for from minutes to hours, quenching the alloy at a relatively slow rate, aging the alloy between 225 F. and 350 F.
- a met 0d of heat-treating an aluminum base alloy conta 'ng from about 3 per cent to about 10 per cent zinc, from about 0.75 per cent to about 4 per cent magnesium, from about 0.5 per cent to about 3 per cent copper, and .from about 0.1 per cent to about 1.5 per cent manganese,
- which method comprises heating said alloy at a temperature and for a time suflicient to place a substantial portion of the soluble constituent thereof in solution, quenching the alloy at a relatively slow rate, artificially aging the alloy, and subsequently heating the alloy at a temperature of between 350 F. and 450 F. for a period of from about 15 minutes to about 2 hours.
- a method of heat-treating an article of aluminum base alloy, said alloy containing zinc, magnesium, copper, and manganese which comprises heating the article at a temperature and for a time sufficient to place a substantial portion of the soluble constituent of said alloy in solution, quenching the article at a rate sumciently 510w to avoid distortion of the shape of the article and sufliciently rapid to retain a substantial portion of the constituent of said alloy in solid solution, artificially aging the article, and subsequently heating the article between 350 F.
- a method of heat-treating an aluminum base alloy containing zinc, magnesium, copper, and manganese which comprises heating the alloy at a temperature and for a time sufiicient to place a substantial portion of its soluble constituent in solution, air quenching the alloy, artificially aging the alloy, and subsequently heating the alloy between 350 F. and 450 F. for a period of from about 15 minutes to about 2 hours.
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)
- Prevention Of Electric Corrosion (AREA)
- Resistance Heating (AREA)
- Conductive Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US283995A US2248185A (en) | 1939-07-12 | 1939-07-12 | Heat treatment of aluminum base alloys |
| GB8005/40A GB544439A (en) | 1939-07-12 | 1940-05-03 | Improvements in or relating to the heat-treatment of aluminium base alloys |
| CH226273D CH226273A (de) | 1939-07-12 | 1940-05-23 | Verfahren zur Wärmebehandlung von Gegenständen aus einer Aluminium-Legierung. |
| FR868271D FR868271A (fr) | 1939-07-12 | 1940-05-23 | Perfectionnements au traitement thermique des alliages à base d'aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US283995A US2248185A (en) | 1939-07-12 | 1939-07-12 | Heat treatment of aluminum base alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2248185A true US2248185A (en) | 1941-07-08 |
Family
ID=23088447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US283995A Expired - Lifetime US2248185A (en) | 1939-07-12 | 1939-07-12 | Heat treatment of aluminum base alloys |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2248185A (fr) |
| CH (1) | CH226273A (fr) |
| FR (1) | FR868271A (fr) |
| GB (1) | GB544439A (fr) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887422A (en) * | 1950-02-25 | 1959-05-19 | United Eng Foundry Co | Method of continuously heat treating aluminum strip |
| US3290187A (en) * | 1964-06-01 | 1966-12-06 | Kaiser Aluminium Chem Corp | Metallurgy |
| US3856584A (en) * | 1972-04-12 | 1974-12-24 | Israel Aircraft Ind Ltd | Reducing the susceptibility of alloys, particularly aluminium alloys, to stress corrosion cracking |
| US4832758A (en) * | 1973-10-26 | 1989-05-23 | Aluminum Company Of America | Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys |
| US4861391A (en) * | 1987-12-14 | 1989-08-29 | Aluminum Company Of America | Aluminum alloy two-step aging method and article |
| US4863528A (en) * | 1973-10-26 | 1989-09-05 | Aluminum Company Of America | Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same |
| EP0392844A1 (fr) * | 1989-04-14 | 1990-10-17 | Nkk Corporation | Traitement d'alliage d'aluminium |
| US5221377A (en) * | 1987-09-21 | 1993-06-22 | Aluminum Company Of America | Aluminum alloy product having improved combinations of properties |
| US5496426A (en) * | 1994-07-20 | 1996-03-05 | Aluminum Company Of America | Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product |
| US6869490B2 (en) | 2000-10-20 | 2005-03-22 | Pechiney Rolled Products, L.L.C. | High strength aluminum alloy |
| CN102952981A (zh) * | 2012-11-19 | 2013-03-06 | 宁波福士汽车部件有限公司 | 一种车用水管合金材料及制备方法 |
| CN102965552A (zh) * | 2012-11-19 | 2013-03-13 | 宁波福士汽车部件有限公司 | 一种车用水管合金材料 |
| CN107365928A (zh) * | 2017-09-06 | 2017-11-21 | 湖南鑫海环保科技有限公司 | 一种铝镁锌合金以及制备方法 |
| CN109252076A (zh) * | 2018-11-13 | 2019-01-22 | 中南大学 | 一种含Ta的耐应力腐蚀Al-Zn-Mg-(Cu)合金及其制备方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1175001B (de) * | 1958-08-16 | 1964-07-30 | Ver Leichtmetallwerke Gmbh | Verfahren zur Herstellung von Leichtmetall-gegenstaenden hoher Federkraft |
| US3171760A (en) * | 1963-04-29 | 1965-03-02 | Aluminum Co Of America | Thermal treatment of aluminum base alloy products |
| US3231435A (en) * | 1964-11-25 | 1966-01-25 | Harvey Aluminum Inc | Method of eliminating stress corrosion cracking in copper-magnesium-zinc series aluminum alloys |
| IL156386A0 (en) * | 2000-12-21 | 2004-01-04 | Alcoa Inc | Aluminum alloy products and artificial aging method |
| RU2322524C1 (ru) * | 2006-07-11 | 2008-04-20 | Юлия Алексеевна Щепочкина | Сплав на основе алюминия |
| RU2371503C1 (ru) * | 2008-11-13 | 2009-10-27 | Юлия Алексеевна Щепочкина | Сплав на основе алюминия |
-
1939
- 1939-07-12 US US283995A patent/US2248185A/en not_active Expired - Lifetime
-
1940
- 1940-05-03 GB GB8005/40A patent/GB544439A/en not_active Expired
- 1940-05-23 CH CH226273D patent/CH226273A/de unknown
- 1940-05-23 FR FR868271D patent/FR868271A/fr not_active Expired
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887422A (en) * | 1950-02-25 | 1959-05-19 | United Eng Foundry Co | Method of continuously heat treating aluminum strip |
| US3290187A (en) * | 1964-06-01 | 1966-12-06 | Kaiser Aluminium Chem Corp | Metallurgy |
| US3856584A (en) * | 1972-04-12 | 1974-12-24 | Israel Aircraft Ind Ltd | Reducing the susceptibility of alloys, particularly aluminium alloys, to stress corrosion cracking |
| US4832758A (en) * | 1973-10-26 | 1989-05-23 | Aluminum Company Of America | Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys |
| US4863528A (en) * | 1973-10-26 | 1989-09-05 | Aluminum Company Of America | Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same |
| US5221377A (en) * | 1987-09-21 | 1993-06-22 | Aluminum Company Of America | Aluminum alloy product having improved combinations of properties |
| US4861391A (en) * | 1987-12-14 | 1989-08-29 | Aluminum Company Of America | Aluminum alloy two-step aging method and article |
| US5035754A (en) * | 1989-04-14 | 1991-07-30 | Nkk Corporation | Heat treating method for high strength aluminum alloy |
| EP0392844A1 (fr) * | 1989-04-14 | 1990-10-17 | Nkk Corporation | Traitement d'alliage d'aluminium |
| US5496426A (en) * | 1994-07-20 | 1996-03-05 | Aluminum Company Of America | Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product |
| US6869490B2 (en) | 2000-10-20 | 2005-03-22 | Pechiney Rolled Products, L.L.C. | High strength aluminum alloy |
| US20050189048A1 (en) * | 2000-10-20 | 2005-09-01 | Alex Cho | High strength aluminum alloy |
| US7125459B2 (en) | 2000-10-20 | 2006-10-24 | Pechiney Rolled Products Llc | High strength aluminum alloy |
| CN102952981A (zh) * | 2012-11-19 | 2013-03-06 | 宁波福士汽车部件有限公司 | 一种车用水管合金材料及制备方法 |
| CN102965552A (zh) * | 2012-11-19 | 2013-03-13 | 宁波福士汽车部件有限公司 | 一种车用水管合金材料 |
| CN107365928A (zh) * | 2017-09-06 | 2017-11-21 | 湖南鑫海环保科技有限公司 | 一种铝镁锌合金以及制备方法 |
| CN109252076A (zh) * | 2018-11-13 | 2019-01-22 | 中南大学 | 一种含Ta的耐应力腐蚀Al-Zn-Mg-(Cu)合金及其制备方法 |
| CN109252076B (zh) * | 2018-11-13 | 2020-10-27 | 中南大学 | 一种含Ta的耐应力腐蚀Al-Zn-Mg-(Cu)合金及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CH226273A (de) | 1943-03-31 |
| FR868271A (fr) | 1941-12-26 |
| GB544439A (en) | 1942-04-14 |
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