US20130028785A1 - Aluminum-Scandium Alloy - Google Patents
Aluminum-Scandium Alloy Download PDFInfo
- Publication number
- US20130028785A1 US20130028785A1 US13/523,970 US201213523970A US2013028785A1 US 20130028785 A1 US20130028785 A1 US 20130028785A1 US 201213523970 A US201213523970 A US 201213523970A US 2013028785 A1 US2013028785 A1 US 2013028785A1
- Authority
- US
- United States
- Prior art keywords
- aluminum
- scandium alloy
- scandium
- alloy
- under test
- 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.)
- Abandoned
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
Definitions
- the present invention generally relates to an aluminum-scandium alloy and, more particularly, to an aluminum-scandium alloy for making metal tubes of a fitness equipment or sport equipment.
- Conventional aluminum-scandium alloy usually includes compositions such as Silicon (Si), Iron (Fe), Scandium (Sc), etc.
- the compositions are mixed with aluminum (Al) to produce a solution of aluminum-scandium alloy.
- the solution of aluminum-scandium alloy is poured into a mold.
- the aluminum-scandium alloy in the mold will naturally cool down as an aluminum-scandium alloy.
- the aluminum-scandium alloy has a higher strength due to addition of Scandium (about 0.06 wt %), the formability of the aluminum-scandium alloy becomes poor. As a result, the aluminum-scandium alloy has only about 20 to 30 percent reduction of area.
- the invention discloses an aluminum-scandium alloy containing essentially of Si; Fe; Mn; Cr; Ti; from 1.9 wt % to 2.5 wt % Cu; from 2.0 wt % to 2.7wt % Mg; from 5.9 wt % to 6.9 wt % Zn; from 0.08 wt % to 0.15 wt % Zr; from 0.01wt % to 0.06 wt % Sc; balance aluminum and inevitable impurities.
- Si is less than 0.12 wt % but larger than 0 wt %.
- Fe is less than 0.15 wt % but larger than 0 wt %.
- Mn is less than 0.1 wt % but larger than 0 wt %.
- Cr is less than 0.04 wt % but larger than 0 wt %.
- Ti is less than 0.06 wt % but larger than 0 wt %.
- the invention discloses an aluminum-scandium alloy which comprises compositions such as Silicon (Si), Iron (Fe), Copper (Cu), Manganese (Mn), Magnesium (Mg), Chromium (Cr), Zinc (Zn), Zirconium (Zr), Titanium (Ti), Scandium (Sc), etc.
- the compositions are mixed with aluminum to produce a solution of aluminum-scandium alloy.
- the solution of aluminum-scandium alloy is quenched with cold water to manufacture metal tubes via continuous casting process.
- the compositions used are listed in the Table 1 below (in weight percentage):
- the metal tubes After the metal tubes are formed, the metal tubes have as high as 30 to 40 percent reduction of area while having a high strength. Advantageously, convenient manufacturing is achieved.
- Table 3 shows experimental data between the conventional aluminum-scandium alloy and the proposed aluminum-scandium alloy:
- the aluminum-scandium alloy of the invention has higher elongation as well as higher reduction of area over the conventional one.
- the invention does provide satisfactory properties of aluminum-scandium alloy.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Particle Accelerators (AREA)
Abstract
An aluminum-scandium alloy contains essentially of Si; Fe; Mn; Cr; Ti; from 1.9 wt % to 2.5 wt % Cu, from 2.0 wt % to 2.7 wt % Mg, from 5.9 wt % to 6.9 wt % Zn, from 0.08 wt % to 0.15 wt % Zr, from 0.01 wt % to 0.06 wt % Sc, balance aluminum and inevitable impurities.
Description
- The application claims the benefit of U.S. provisional application No. 61/511597, filed on Jul. 26, 2011, the subject matter of which is incorporated herein by reference.
- 1. Field of the Invention
- The present invention generally relates to an aluminum-scandium alloy and, more particularly, to an aluminum-scandium alloy for making metal tubes of a fitness equipment or sport equipment.
- 2. Description of the Related Art
- Conventional aluminum-scandium alloy usually includes compositions such as Silicon (Si), Iron (Fe), Scandium (Sc), etc. The compositions are mixed with aluminum (Al) to produce a solution of aluminum-scandium alloy. The solution of aluminum-scandium alloy is poured into a mold. The aluminum-scandium alloy in the mold will naturally cool down as an aluminum-scandium alloy. However, although the aluminum-scandium alloy has a higher strength due to addition of Scandium (about 0.06 wt %), the formability of the aluminum-scandium alloy becomes poor. As a result, the aluminum-scandium alloy has only about 20 to 30 percent reduction of area.
- In light of this problem, it is necessary to solve the disadvantages of the conventional aluminum-scandium alloy.
- It is therefore the primary objective of this invention to provide an aluminum-scandium alloy with higher percent reduction of area as well as higher strength.
- The invention discloses an aluminum-scandium alloy containing essentially of Si; Fe; Mn; Cr; Ti; from 1.9 wt % to 2.5 wt % Cu; from 2.0 wt % to 2.7wt % Mg; from 5.9 wt % to 6.9 wt % Zn; from 0.08 wt % to 0.15 wt % Zr; from 0.01wt % to 0.06 wt % Sc; balance aluminum and inevitable impurities.
- In a preferred form shown, Si is less than 0.12 wt % but larger than 0 wt %.
- In the preferred form shown, Fe is less than 0.15 wt % but larger than 0 wt %.
- In the preferred form shown, Mn is less than 0.1 wt % but larger than 0 wt %.
- In the preferred form shown, Cr is less than 0.04 wt % but larger than 0 wt %.
- In the preferred form shown, Ti is less than 0.06 wt % but larger than 0 wt %.
- The invention discloses an aluminum-scandium alloy which comprises compositions such as Silicon (Si), Iron (Fe), Copper (Cu), Manganese (Mn), Magnesium (Mg), Chromium (Cr), Zinc (Zn), Zirconium (Zr), Titanium (Ti), Scandium (Sc), etc. The compositions are mixed with aluminum to produce a solution of aluminum-scandium alloy. The solution of aluminum-scandium alloy is quenched with cold water to manufacture metal tubes via continuous casting process. The compositions used are listed in the Table 1 below (in weight percentage):
-
TABLE 1 Compositions Used In The Aluminum-scandium Alloy (In Weight Percentage wt %) Si Fe Cu Mn Mg Cr below below 0.15 1.9-2.5 below 0.1 2.0-2.7 below 0.12 0.04 Zn Zr Ti Sc Others Al 5.9-6.9 0.08-0.15 below 0.01-0.06 below Balance 0.06 0.05 - After the metal tubes are formed, the metal tubes have as high as 30 to 40 percent reduction of area while having a high strength. Advantageously, convenient manufacturing is achieved.
- In the stage of mass production, the actual values of the compositions used are listed in the Table 2 below (in weight percentage):
-
TABLE 2 Compositions Used In The Aluminum-scandium Alloy In Mass Production (In Weight Percentage wt %) Si Fe Cu Mn Mg Cr 0.04 0.07 2.23-2.33 0.01 2.3-2.4 below 0.01 Zn Zr Ti Sc Al 6.67-6.77 0.08-0.15 0.01 0.02-0.03 Balance - Table 3 shows experimental data between the conventional aluminum-scandium alloy and the proposed aluminum-scandium alloy:
-
Mechanical Properties Tensile Yield Elong- Reduction Hard- Strength Strength ation of Area ness Material (ksi) (ksi) (%) (%) (HRB) Conventional 98.3 90.6 10.2 22.5 92.5 Aluminum-scandium Alloy (Tested Under Test Board 1) Conventional 98.8 91.2 9.8 21.6 91.8 Aluminum-scandium Alloy (Tested Under Test Board 2) Conventional 99.1 91.6 10.3 23.1 92.8 Aluminum-scandium Alloy (Tested Under Test Board 3) Conventional 98.1 92.1 9.9 21.4 92.3 Aluminum-scandium Alloy (Tested Under Test Board 4) Conventional 98.4 92.3 10.2 20.9 92.8 Aluminum-scandium Alloy (Tested Under Test Board 5) Conventional 99.2 92.7 10.5 21.2 92.7 Aluminum-scandium Alloy (Tested Under Test Board 6) Proposed 97.8 91.6 13.4 36.8 92.1 Aluminum-scandium Alloy (Tested Under Test Board 1) Proposed 98.1 91.8 14.2 37.4 91.9 Aluminum-scandium Alloy (Tested Under Test Board 2) Proposed 99.1 92.3 14.1 36.4 92.3 Aluminum-scandium Alloy (Tested Under Test Board 3) Proposed 98.7 92.4 13.9 35.9 92.1 Aluminum-scandium Alloy (Tested Under Test Board 4) Proposed 98.6 91.8 13.8 36.1 92.2 Aluminum-scandium Alloy (Tested Under Test Board 5) Proposed 98.3 92.1 14.3 37.9 92.1 Aluminum-scandium Alloy (Tested Under Test Board 6) - From the Table 3, it can be seen that the aluminum-scandium alloy of the invention has higher elongation as well as higher reduction of area over the conventional one. Thus, the invention does provide satisfactory properties of aluminum-scandium alloy.
- Although the invention has been described in detail with reference to its presently preferable embodiments, it will be understood by one of ordinary skill in the art that various modifications can be made without departing from the spirit and the scope of the invention, as set forth in the appended claims.
Claims (6)
1. An aluminum-scandium alloy containing essentially of:
Si, Fe, Mn, Cr, Ti,
from 1.9 wt % to 2.5 wt % Cu;
from 2.0 wt % to 2.7wt % Mg;
from 5.9 wt % to 6.9 wt % Zn;
from 0.08 wt % to 0.15 wt % Zr;
from 0.01wt % to 0.06 wt % Sc; and
balance aluminum and inevitable impurities.
2. The aluminum alloy as claimed in claim 1 , wherein Si is less than 12 wt % but larger than 0 wt %.
3. The aluminum-scandium alloy as claimed in claim 1 , wherein Fe is less than 0.15 wt % but larger than 0 wt %.
4. The aluminum-scandium alloy as claimed in claim 1 , wherein Mn is less than 0.1 wt % but larger than 0 wt %.
5. The aluminum-scandium alloy as claimed in claim 1 , wherein Cr is less than 0.04 wt % but larger than 0 wt %.
6. The aluminum-scandium alloy as claimed in claim 1 , wherein Ti is less than 0.06 wt % but larger than 0 wt %.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/523,970 US20130028785A1 (en) | 2011-07-26 | 2012-06-15 | Aluminum-Scandium Alloy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161511597P | 2011-07-26 | 2011-07-26 | |
US13/523,970 US20130028785A1 (en) | 2011-07-26 | 2012-06-15 | Aluminum-Scandium Alloy |
Publications (1)
Publication Number | Publication Date |
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US20130028785A1 true US20130028785A1 (en) | 2013-01-31 |
Family
ID=47597369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/523,970 Abandoned US20130028785A1 (en) | 2011-07-26 | 2012-06-15 | Aluminum-Scandium Alloy |
Country Status (1)
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US (1) | US20130028785A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104451292A (en) * | 2014-12-12 | 2015-03-25 | 西南铝业(集团)有限责任公司 | 7A85 aluminum alloy |
WO2015169163A1 (en) * | 2014-05-08 | 2015-11-12 | Byd Company Limited | Aluminum alloy and method of preparing the same |
CN109402461A (en) * | 2018-12-25 | 2019-03-01 | 有研工程技术研究院有限公司 | A kind of aluminum foil material being used to prepare lightning protection aluminium net |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020157742A1 (en) * | 2001-02-28 | 2002-10-31 | Alex Cho | Aluminum alloys and methods of making the same |
-
2012
- 2012-06-15 US US13/523,970 patent/US20130028785A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020157742A1 (en) * | 2001-02-28 | 2002-10-31 | Alex Cho | Aluminum alloys and methods of making the same |
Non-Patent Citations (1)
Title |
---|
"Aluminum and Aluminum Alloys", ASM International, 1993, p 45. * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015169163A1 (en) * | 2014-05-08 | 2015-11-12 | Byd Company Limited | Aluminum alloy and method of preparing the same |
CN104451292A (en) * | 2014-12-12 | 2015-03-25 | 西南铝业(集团)有限责任公司 | 7A85 aluminum alloy |
CN109402461A (en) * | 2018-12-25 | 2019-03-01 | 有研工程技术研究院有限公司 | A kind of aluminum foil material being used to prepare lightning protection aluminium net |
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AS | Assignment |
Owner name: FUSHENG PRECISION CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, CHAN-TUNG;REEL/FRAME:028381/0053 Effective date: 20120615 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |