US1418303A - Aluminum alloy - Google Patents
Aluminum alloy Download PDFInfo
- Publication number
- US1418303A US1418303A US446115A US44611521A US1418303A US 1418303 A US1418303 A US 1418303A US 446115 A US446115 A US 446115A US 44611521 A US44611521 A US 44611521A US 1418303 A US1418303 A US 1418303A
- Authority
- US
- United States
- Prior art keywords
- aluminum
- alloy
- exceeding
- zinc
- titanium
- 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
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Classifications
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- 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
- This invention consists of improved aluan alloy is made consisting of Copper about .1% to any amount below Titanium about .1% to about 2%. Zinc about 6% to about 16%.
- Iron present as an impurity of commer-- cial aluminum preferably not exceeding .6%.
- Silicon present as an impurity of commercial aluminum
- Other elements preferably not exceeding 4%.
- the alloy can be made as follows A coppertitanium aluminum alloy should be made in the first instance consisting of Copper about 32%.
- Titanium about 7.5%.
- the alloy so made is then introduced in the form of suitable sized pieces or granules into a bath of molten commercial aluminum in which it will readily dissolve.
- the zinc should then be added but it is preferable to retain a small proportion, say 1% thereof to be added later as hereinafter explained.
- the alloy is improved by the substitution for not exceeding 3% of the aluminum, of
- antimony and/or magnesium not exceeding in respect of either about 1.5%.
- Alloys made according to this invention of the composition specified above are found to give the following advantages over aluminum alloys heretofore in use 1. Increased fluidity in the molten icondition.
- An alloy comprising 1 to 3% copper; 1 to 2% titanium; 6 to 16% zinc; magnesium, not exceeding 1.5%; and impurities contained in commercial aluminum,-no t exceeding 01% in the aggregate the remainder 1 consisting mostly of aluminum.
- titanium-aluminum alloy introducing such HORACE CAMPBELL HALL. alloy in particles of suitable size into a bath witnesseses: of molten commercial aluminum to be dis- NORMAN HAY WALKE solved therein; then adding zinc; and then VIOLET MAUD MASTERS.
Description
' To all whom it may concern.
' ninum alloys.
UNITED STATES PATENT OFFICE.
HORACE CAMPBELL HALL, OF DERBY, ENGLAND, ASSIGNOR T0, ROLLS-ROYCE LIMITED,
OF DERBY, ENGLAND, A COMPANY OF GREAT BRITAIN.
' ELU miUM ALLOY.
No Drawin g.
Be it known that I, HORACE CAMPBELL HALL, of Derby, England, have invented certain new and useful Improvements in Aluminum Alloys, of which the following is a specification. Y
This invention consists of improved aluan alloy is made consisting of Copper about .1% to any amount below Titanium about .1% to about 2%. Zinc about 6% to about 16%.
Iron (present as an impurity of commer-- cial aluminum) preferably not exceeding .6%.
Silicon (present as an impurity of commercial aluminum) preferably not exceed ing Other elements (impurities) preferably not exceeding 4%.
Aluminum remainder.
The alloy can be made as follows A coppertitanium aluminum alloy should be made in the first instance consisting of Copper about 32%.
Titanium about 7.5%.
Aluminum about 59%.
Other elements (impurities) preferably not exceeding 1.5%.
In the above the quantities of titanium and aluminum may be varied about 2% above or below the percentages stated. Further a slightly higher percentage of copper may be used dependent on the ultimate properties required;
The alloy so made is then introduced in the form of suitable sized pieces or granules into a bath of molten commercial aluminum in which it will readily dissolve. The zinc should then be added but it is preferable to retain a small proportion, say 1% thereof to be added later as hereinafter explained.
If it is desired to increase the ratio of copper to titanium it should be done by the addition of a copper aluminum alloy. to the ultimate bath simultaneously with the primary alloy.
The alloy is improved by the substitution for not exceeding 3% of the aluminum, of
antimony and/or magnesium not exceeding in respect of either about 1.5%.
If antimony or magnesium or both are required. these should preferably be. added to the final bath of metal together with' the According-to this invention Specification of Letters Patent. Patented June 6, 1922.
Application filed February 18, 1921. Serial No. 446,115.
small percentage of the zinc about 5 minutes before casting.
The introduction of the small quantity of zinc retained as aforesaid at the stage prescribed augments the clearing action of the antimony and magnesium and even by itself makes the metal more fluid.
Alloys made according to this invention of the composition specified above are found to give the following advantages over aluminum alloys heretofore in use 1. Increased fluidity in the molten icondition.
2. A reduced tendency to crack in the mould during solidification,
3. An absence of gas cavities, resulting in sounder and finer grained castings.
' 4. An improvement in mechanical test results, including a raising of the yield point,
and an increase in ductility.
5. A reduction in the co-efiicient of heatex ansion of the resulting alloy.
hat I claim as my invention and desire to secure. by Letters Patent of, the United States is 1. An alloy, comprising 1 to 3% copper;
I 1 to 2% titanium; 6 to 16% zinc; and impurities contained in commercial aluminum, r
not exceeding 1% in the aggregate; the remainder consisting mostly of aluminum. I
2. An alloy, comprising 1 to 3% copper; 1 to 2% titanium; 6 to 16% zinc; magnesium, not exceeding 1.5%; and impurities contained in commercial aluminum,-no t exceeding 01% in the aggregate the remainder 1 consisting mostly of aluminum.
3..An alloy comprising 1 to 3% copper 1 to 2% titanium; 6 to 16% zinc; magnesium, and antimony, not exceeding 1.5% of each; and lmpurities contained in commercial aluminum, not exceeding 1 in. the aggregate; the remainder consisting mostly I of aluminum. 7 I
4. The process of forming an alloy, comprising the steps of first forming a coppertitanium-aluminum alloy; introducing such alloyin particles of suitable size into a bath of molten commercial aluminum to be dissolved therein; and then adding'zinc to the resultant mixture.
5. The process of forming an alloy, comprising the steps of first forming a coppertitanium-aluminum alloy; introducing such alloy in particles of suitable size into a bath of molten commercial aluminum to be dis- Q 7 I i 1,418,303
solved therein; then adding zinc; and then adding magnesium and antimony to the re- 10 adding maganesium to the resultant mixsultant mixture.
ture. In Witness whereof I have signed this 6. The process of forming an alloy, comspecification in the presence of two Witprising the steps of first forming a coppernesses.
titanium-aluminum alloy; introducing such HORACE CAMPBELL HALL. alloy in particles of suitable size into a bath Witnesses: of molten commercial aluminum to be dis- NORMAN HAY WALKE solved therein; then adding zinc; and then VIOLET MAUD MASTERS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US446115A US1418303A (en) | 1921-02-18 | 1921-02-18 | Aluminum alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US446115A US1418303A (en) | 1921-02-18 | 1921-02-18 | Aluminum alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US1418303A true US1418303A (en) | 1922-06-06 |
Family
ID=23771367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US446115A Expired - Lifetime US1418303A (en) | 1921-02-18 | 1921-02-18 | Aluminum alloy |
Country Status (1)
Country | Link |
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US (1) | US1418303A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2708304A (en) * | 1952-06-27 | 1955-05-17 | Lundin Helen Marie | Aluminum coated articles |
US2742688A (en) * | 1952-06-18 | 1956-04-24 | Aluminum Co Of America | Duplex aluminous products and articles |
US20040099352A1 (en) * | 2002-09-21 | 2004-05-27 | Iulian Gheorghe | Aluminum-zinc-magnesium-copper alloy extrusion |
US20050236075A1 (en) * | 2002-09-21 | 2005-10-27 | Iulian Gheorghe | Aluminum-zinc-magnesium-copper alloy extrusion |
US20070029016A1 (en) * | 2002-09-21 | 2007-02-08 | Universal Alloy Corporation | Aluminum-zinc-magnesium-copper alloy wrought product |
US20080299000A1 (en) * | 2002-09-21 | 2008-12-04 | Universal Alloy Corporation | Aluminum-zinc-copper-magnesium-silver alloy wrought product |
-
1921
- 1921-02-18 US US446115A patent/US1418303A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2742688A (en) * | 1952-06-18 | 1956-04-24 | Aluminum Co Of America | Duplex aluminous products and articles |
US2708304A (en) * | 1952-06-27 | 1955-05-17 | Lundin Helen Marie | Aluminum coated articles |
US20040099352A1 (en) * | 2002-09-21 | 2004-05-27 | Iulian Gheorghe | Aluminum-zinc-magnesium-copper alloy extrusion |
US20050236075A1 (en) * | 2002-09-21 | 2005-10-27 | Iulian Gheorghe | Aluminum-zinc-magnesium-copper alloy extrusion |
US20070029016A1 (en) * | 2002-09-21 | 2007-02-08 | Universal Alloy Corporation | Aluminum-zinc-magnesium-copper alloy wrought product |
US7214281B2 (en) | 2002-09-21 | 2007-05-08 | Universal Alloy Corporation | Aluminum-zinc-magnesium-copper alloy extrusion |
US20070187007A1 (en) * | 2002-09-21 | 2007-08-16 | Iulian Gheorghe | Aluminum-zinc-magnesium-copper alloy extrusion |
US20080299000A1 (en) * | 2002-09-21 | 2008-12-04 | Universal Alloy Corporation | Aluminum-zinc-copper-magnesium-silver alloy wrought product |
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