CA2361484A1 - Production of ultra-fine grain structure in as-cast aluminum alloys - Google Patents
Production of ultra-fine grain structure in as-cast aluminum alloys Download PDFInfo
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- CA2361484A1 CA2361484A1 CA 2361484 CA2361484A CA2361484A1 CA 2361484 A1 CA2361484 A1 CA 2361484A1 CA 2361484 CA2361484 CA 2361484 CA 2361484 A CA2361484 A CA 2361484A CA 2361484 A1 CA2361484 A1 CA 2361484A1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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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
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Abstract
A method of controlling grain size in as-cast aluminum alloy having the steps of a) providing a molten aluminum alloy including an alloying element selected from the group consisting of Ti, Sc, Zr, V, Hf, Nb and Y; b) adding a grain refiner to the molten aluminum alloy to form a melt; and c) solidifying the melt to form an ingot. The grain refiner includes Ti and B or C, and is added to the melt in an amount to yield the concentration in the melt of B or C from the grain refiner of about 0.003-0.010 wt. %. Grains in the as-cast aluminum alloy are about 200 microns or less in size.
Description
PROnUCTlQN OF ULTRA..~'INC GltAUV ST1ZUCTURC !N
AS-CAST ALtJMXNUM Al.t,OYS
1. I~ield of the Inyention This invention relates to production of as-cast almninum alloys with ulri~a-fine grain stxuctuz-e. More particularly, it relates to methods of adding a gain refiner to a coolten aluminum alloy at levels which reduce the ~-aui size to less than about 200 nnicrons.
AS-CAST ALtJMXNUM Al.t,OYS
1. I~ield of the Inyention This invention relates to production of as-cast almninum alloys with ulri~a-fine grain stxuctuz-e. More particularly, it relates to methods of adding a gain refiner to a coolten aluminum alloy at levels which reduce the ~-aui size to less than about 200 nnicrons.
2, rior Art The size and shape of grains in as-cast alun'tzt~.um alloy impacts properties of wrought or cast products. Casting with large grains, particularly dendritic graitxs, is highly prone to cracking during casting and reduce ductility, fracture toughness and fatigue properties. Reduction of the size as well as the form of the grains may be accomplished by mechanical or electromagnetic stirring to break up the grains. Grain size may also be controlled metallurgically by adding a grain refiner to the aluminum alloy melt. A typical grain refiner used for aluminum alloys is either an Al-Ti-13 alloy or an Al-~'i-C alloy in the form of a rod or waffle. A grain refiner consists of nwnerous fine boridc or carbide patrticles in an aluminum matrix. When these grain refiners are added to tle aluminum alloy melt, the boride of carbide particles are dispersed into the melt and serve as nucleating sites for grains during solidification. Commercially available grain refiners include alloys containing about 3-5 wt, % Ti and about 0.15-1 wt. % B
or C and the balance AI. According; to ibis practice, a residual amount of Ti is present in or is added to the alutninutn melt (e.g. less than O.OlSwt. %), and a e~ntrolled amount of the grain refiner is added thereto which increases the total 'Ci concentration in the ftnal melt by about 0.001-0.003 wt. %. In this manner, the amount of B or C added to the melt via the grai,z~. refiner is about 0,0001-0.001 wt. %. The addition of gram refiners at these conventional levels can control the size of dendtitic grains to be about 250-1000 microns, ror certain cast or wrought aluminum products, such a grain structure is suffteaently fine and cracking or other mechanical problems are not experienced.
Howcvct, a need remains for as-cast alumhaum alloys with an ultra-fine grain structure, i.c. about 200 microns in size or less. It has been found that ultra-fine grain size tnay be achieved by supersaturating a molten alloy with dispetsoid-forming elements such as Zr, Mn, Cr, V, Ti, Sc and T~f as disclosed iii If.S. fatertt No. 6,004,506. That process requires the addition of a specialized, pre-alloyed ribbon of material containing the dispersoid-fornctiztg elements into a pool of molten metal formed dutixig ingot castinb. Accordingly, a nerd remains for a method of producing aluminum alloys with ultra-f;.ne grain structure using readily available additives.
This need is met by the method ofthe prESCnt invention for producing fine grain aluminum and the as-cast aluminum alloy prepared thereby.
The inventive method includes the steps of a) providing a iuolton aluminum alloy including an alloying element selected from the group consisting of Ti, Sc, fir, V, 11F, Nb and Y; b) adding a grain refiner to the molten aluminum alloy to form a melt, wherein the grain refiner comprises (i) Ti and (ii) B or C, such that the concentration in the melt of B or C after addition of grai~~ refiner is about 0.003-0.010 w~. %; and c) solidifying the melt to foam an ingot. Preferably, the alloying clement is Ti at a concentl-ation of about 0.015-0.030 wt. % in the molten almninum alloy or Sc at a concentration of about 0.030-0.10 wt. % in the molten aluminum alloy. The alloy may be a wrought alloy of the 1XXX, 2XXX, 3XX?C, SXXX, 6XXX, 7~:XX or 8XXX Aluminum Associafiion (AA) series, preferably an alloy of the ZXXX or 7XXX AA series or a casting alloy such as a 2XX, 3XX, d.XX, SXX, 7XX or 8XX series alloy. Particularly prefeiTed wrought alloys u-e 7055 and 7050 alloys. The grains in the ingot formed according to the present invention are sized about Z00 microns or less, preferably 100 microns or less.
Other features of the present invention will be further described in tl~e following related description of the preferred embodiment which is to be considered together with the accompanying drawings wherein:
Fig. 1 is a photomicrograph of 7055 alloy produced according to the present invention; and Fig. 2 is photonuerograph of 7055 alloy produced according to the prior art.
or C and the balance AI. According; to ibis practice, a residual amount of Ti is present in or is added to the alutninutn melt (e.g. less than O.OlSwt. %), and a e~ntrolled amount of the grain refiner is added thereto which increases the total 'Ci concentration in the ftnal melt by about 0.001-0.003 wt. %. In this manner, the amount of B or C added to the melt via the grai,z~. refiner is about 0,0001-0.001 wt. %. The addition of gram refiners at these conventional levels can control the size of dendtitic grains to be about 250-1000 microns, ror certain cast or wrought aluminum products, such a grain structure is suffteaently fine and cracking or other mechanical problems are not experienced.
Howcvct, a need remains for as-cast alumhaum alloys with an ultra-fine grain structure, i.c. about 200 microns in size or less. It has been found that ultra-fine grain size tnay be achieved by supersaturating a molten alloy with dispetsoid-forming elements such as Zr, Mn, Cr, V, Ti, Sc and T~f as disclosed iii If.S. fatertt No. 6,004,506. That process requires the addition of a specialized, pre-alloyed ribbon of material containing the dispersoid-fornctiztg elements into a pool of molten metal formed dutixig ingot castinb. Accordingly, a nerd remains for a method of producing aluminum alloys with ultra-f;.ne grain structure using readily available additives.
This need is met by the method ofthe prESCnt invention for producing fine grain aluminum and the as-cast aluminum alloy prepared thereby.
The inventive method includes the steps of a) providing a iuolton aluminum alloy including an alloying element selected from the group consisting of Ti, Sc, fir, V, 11F, Nb and Y; b) adding a grain refiner to the molten aluminum alloy to form a melt, wherein the grain refiner comprises (i) Ti and (ii) B or C, such that the concentration in the melt of B or C after addition of grai~~ refiner is about 0.003-0.010 w~. %; and c) solidifying the melt to foam an ingot. Preferably, the alloying clement is Ti at a concentl-ation of about 0.015-0.030 wt. % in the molten almninum alloy or Sc at a concentration of about 0.030-0.10 wt. % in the molten aluminum alloy. The alloy may be a wrought alloy of the 1XXX, 2XXX, 3XX?C, SXXX, 6XXX, 7~:XX or 8XXX Aluminum Associafiion (AA) series, preferably an alloy of the ZXXX or 7XXX AA series or a casting alloy such as a 2XX, 3XX, d.XX, SXX, 7XX or 8XX series alloy. Particularly prefeiTed wrought alloys u-e 7055 and 7050 alloys. The grains in the ingot formed according to the present invention are sized about Z00 microns or less, preferably 100 microns or less.
Other features of the present invention will be further described in tl~e following related description of the preferred embodiment which is to be considered together with the accompanying drawings wherein:
Fig. 1 is a photomicrograph of 7055 alloy produced according to the present invention; and Fig. 2 is photonuerograph of 7055 alloy produced according to the prior art.
For purposes of the description hereinafter, it is to be understood that the invention may assume a number of alternative variations and step sequences, except where expressly specifted to the contrary. (t is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, axe simply exemplary embodiments of the invention. IIence, specific dimensions aTad other physical eh~.racteristics related to the embodiments disclosed herein are not to be considered as limitinb.
The present invention includes a method of controlling the grain sine in cast aluminum alloys to about 200 microns or less. According to the inventive mcfihod, an alloying clement is added to a molten aluminum alloy. Prefen-ed residual alloying elements arc Ti, Sc, Zr, V, Hf, Nb and Y, more preferably Ti and Sc. A prefezTed conccnixation of the alloying element Ti in the molten aluminuzxz alloy is about 0.015-0.030 wt. %. When the alloying element is Sc, a preferred concenlrt~tion of residual Sc in the molten aluminum alloy is about 0.030-0.1 wt.
%. 'W'hen~the alloying element is Zr, V, Hf, Nb or Y, the preferred concentration thereof is on the order of the preferred co~acentrations of Ti and Sc.
A grain refiner is added to the molten aluminum alloy containing the residual alloying element to form a melt. Commercially available grain, refiners are alloys consisting ofTi and 13 or C with the balance Zluminutn. Typical concentrations in the brain refiner are about 3-5 wt. % Ti and about 0.15-I
wt.
B or C. The final concentration of Q or C in the melt from the grain refiner is about 0.003-0.010 wt. %.
Suitable comruercially available grain refiners have compositions such as 3 wt. %'1'i, 1 wt. % B and balance A1 (referred to as A1~3%'ri-1%B), 5%Ti-1%B, A1 ~%Ti-0.2%8, Al-5%Ti-0.2%B, AI-3%Ti-0.15%C, or AI-3%Ti-0.3%C. 'These gcaila refiners typically are provided in the fonn of a rod or waffle.
The ratio of 13 oa C to Ti in the grain refiner is aomnally f xed; hence, the amount of grain refiner added to the melt controls the final amount of Ti present in the melt. For example, in order to aclueve a concentration of B of about 0.003-0.010 wt. % in 100 pounds of a melt contai~x~ing 0.02 wt. % Ti, about 0.003-0.010 pounds of 13 are needed nn the melt. When a lain refiner consisting of Al-3%Ti-1%B is used, about 0.3-1 pound of grain refiner arc added to the melt. 'this results in an additional about 0.009-0.030 wt. % Ti added to the melt from the grain refiner fox-a total concentzation of Ti in the melt of about 0.029-0.050 wt. %.
Conventional gxaan refining practice dictates using less than 0.001 wt. % 13 in tl~c melt which is 3 to 10 times less grain refiner than is added according to the present invention. Likewise, the incremental concentration of Ti from the grain refiner for conventional practice is 3 to 10 times less than tl~e amotmt of Ti added to the melt by the grain refiner according to the present invcotion.
The present invention may be used to control grain size in wrought and cast alloys. Suitable alloys include Aluminum Association (AA) wrought alloys of Ihc 1 XXX, 2XXX, 3XXX, SXXX, 6XXX, 7XXX and 8XXX series attd cast alloys of the AA ZXX, 3 XX, 4XX, SXX, 7XX aad 8XX series, Alloys of the AA 2XXX and 7x;XX series are patrticulzrly suited to treatment according to the present invention.
As-cast aluminum alloy produced according to the present invention has globular grains which are about 200 microns or less in size, typically about 80 microns in size. 1n contt~ast, conventional ,grain refining practice of adding a grain refiner of Al-3%Ti-1%B such that the concentration of B in the melt is 0.001 wt.
produces dendritic grains sized about 1000 microns. These large dendritic grains interlock with each other and render the cast alloy a-igid and prone to cracking, whereas the small, globular grains formed by the method of the present ilivention reduce crack irlitxation during casting and improve formability during deform ation.
Although the invention has been described generally above, the particular example gives additional illustration o.f the product and process steps typical of the present invention.
Irxam,~le 50 Pounds (lbs) of aluminum alloy 7055 was melted, and 0.0154 lb of 97% Ti powder compact was added to the molten alloy to achieve a concentration of about 0.03 wt. % Ti. A grain refiner of Al-3%Ti-1%B (0.335 lbs) was added to the melt at 1300° F. The melt was stirred for 1 minute after the addition of the grain refiner. The final concentration of B in the melt was about 0.0066 wt. %, and the find concentration of 1'i in the ztnelt was O,OS wt. %
(0.03 wt. % residual Ti, plus 0.02 wt, % Ti added from the grain refiner.) The mclt was cast into an ingot. 'fhe microshucture of the ingot is shown in rig. 1. The bright areas of globular grains are cleanly seen and are less than about 100 microns in size.
SO founds of aluminuzn alloy 7055 was melted. I~ grain refiner of A1,3%Ti-1%!i was added to the melt at 1300° F according to conventional commercial practice. The melt was stirred for 1 minute after the addition of the grain refiner. The melt was cast into an ingot. The microstzucture of the ingot is Shown fn Fig. 2. The bright areas of dendritic grains are clearly seen and are up to about 1000 microns in sine.
It will be readily appreciated by those skilled in the art that modifications may be made to the invention without depai*ing from the concepts disclosed iit the foregoing description. Such ttaodiCcations are to be considered as included within the following claims unless the claims, by their language, expressly state otherwise. Accordingly, the pa~*icular embodiments described in .
detail herein are illustrative only and we not limiting to the scope of the invention which is to be given the full breadth of the appended clairu.s and any and all equivalents thereof.
The present invention includes a method of controlling the grain sine in cast aluminum alloys to about 200 microns or less. According to the inventive mcfihod, an alloying clement is added to a molten aluminum alloy. Prefen-ed residual alloying elements arc Ti, Sc, Zr, V, Hf, Nb and Y, more preferably Ti and Sc. A prefezTed conccnixation of the alloying element Ti in the molten aluminuzxz alloy is about 0.015-0.030 wt. %. When the alloying element is Sc, a preferred concenlrt~tion of residual Sc in the molten aluminum alloy is about 0.030-0.1 wt.
%. 'W'hen~the alloying element is Zr, V, Hf, Nb or Y, the preferred concentration thereof is on the order of the preferred co~acentrations of Ti and Sc.
A grain refiner is added to the molten aluminum alloy containing the residual alloying element to form a melt. Commercially available grain, refiners are alloys consisting ofTi and 13 or C with the balance Zluminutn. Typical concentrations in the brain refiner are about 3-5 wt. % Ti and about 0.15-I
wt.
B or C. The final concentration of Q or C in the melt from the grain refiner is about 0.003-0.010 wt. %.
Suitable comruercially available grain refiners have compositions such as 3 wt. %'1'i, 1 wt. % B and balance A1 (referred to as A1~3%'ri-1%B), 5%Ti-1%B, A1 ~%Ti-0.2%8, Al-5%Ti-0.2%B, AI-3%Ti-0.15%C, or AI-3%Ti-0.3%C. 'These gcaila refiners typically are provided in the fonn of a rod or waffle.
The ratio of 13 oa C to Ti in the grain refiner is aomnally f xed; hence, the amount of grain refiner added to the melt controls the final amount of Ti present in the melt. For example, in order to aclueve a concentration of B of about 0.003-0.010 wt. % in 100 pounds of a melt contai~x~ing 0.02 wt. % Ti, about 0.003-0.010 pounds of 13 are needed nn the melt. When a lain refiner consisting of Al-3%Ti-1%B is used, about 0.3-1 pound of grain refiner arc added to the melt. 'this results in an additional about 0.009-0.030 wt. % Ti added to the melt from the grain refiner fox-a total concentzation of Ti in the melt of about 0.029-0.050 wt. %.
Conventional gxaan refining practice dictates using less than 0.001 wt. % 13 in tl~c melt which is 3 to 10 times less grain refiner than is added according to the present invention. Likewise, the incremental concentration of Ti from the grain refiner for conventional practice is 3 to 10 times less than tl~e amotmt of Ti added to the melt by the grain refiner according to the present invcotion.
The present invention may be used to control grain size in wrought and cast alloys. Suitable alloys include Aluminum Association (AA) wrought alloys of Ihc 1 XXX, 2XXX, 3XXX, SXXX, 6XXX, 7XXX and 8XXX series attd cast alloys of the AA ZXX, 3 XX, 4XX, SXX, 7XX aad 8XX series, Alloys of the AA 2XXX and 7x;XX series are patrticulzrly suited to treatment according to the present invention.
As-cast aluminum alloy produced according to the present invention has globular grains which are about 200 microns or less in size, typically about 80 microns in size. 1n contt~ast, conventional ,grain refining practice of adding a grain refiner of Al-3%Ti-1%B such that the concentration of B in the melt is 0.001 wt.
produces dendritic grains sized about 1000 microns. These large dendritic grains interlock with each other and render the cast alloy a-igid and prone to cracking, whereas the small, globular grains formed by the method of the present ilivention reduce crack irlitxation during casting and improve formability during deform ation.
Although the invention has been described generally above, the particular example gives additional illustration o.f the product and process steps typical of the present invention.
Irxam,~le 50 Pounds (lbs) of aluminum alloy 7055 was melted, and 0.0154 lb of 97% Ti powder compact was added to the molten alloy to achieve a concentration of about 0.03 wt. % Ti. A grain refiner of Al-3%Ti-1%B (0.335 lbs) was added to the melt at 1300° F. The melt was stirred for 1 minute after the addition of the grain refiner. The final concentration of B in the melt was about 0.0066 wt. %, and the find concentration of 1'i in the ztnelt was O,OS wt. %
(0.03 wt. % residual Ti, plus 0.02 wt, % Ti added from the grain refiner.) The mclt was cast into an ingot. 'fhe microshucture of the ingot is shown in rig. 1. The bright areas of globular grains are cleanly seen and are less than about 100 microns in size.
SO founds of aluminuzn alloy 7055 was melted. I~ grain refiner of A1,3%Ti-1%!i was added to the melt at 1300° F according to conventional commercial practice. The melt was stirred for 1 minute after the addition of the grain refiner. The melt was cast into an ingot. The microstzucture of the ingot is Shown fn Fig. 2. The bright areas of dendritic grains are clearly seen and are up to about 1000 microns in sine.
It will be readily appreciated by those skilled in the art that modifications may be made to the invention without depai*ing from the concepts disclosed iit the foregoing description. Such ttaodiCcations are to be considered as included within the following claims unless the claims, by their language, expressly state otherwise. Accordingly, the pa~*icular embodiments described in .
detail herein are illustrative only and we not limiting to the scope of the invention which is to be given the full breadth of the appended clairu.s and any and all equivalents thereof.
Claims (23)
1 claim;
1. A method of producing fine grain aluminum comprising the steps of:
a) providing a molten aluminum alloy comprising an alloying element selected from the group consisting of Ti, Sc, Zr, V, IIf, Nb and Y;
b) adding a grain refiner to the molten aluminum alloy to form a melt, wherein the grain refiner comprises (i) Ti and (ii) B or C, such that the concentration in the melt of R or C from the grain refiner is about 0.003-0.010 wt. %; and c) solidifying the melt to form an ingot or a casting.
1. A method of producing fine grain aluminum comprising the steps of:
a) providing a molten aluminum alloy comprising an alloying element selected from the group consisting of Ti, Sc, Zr, V, IIf, Nb and Y;
b) adding a grain refiner to the molten aluminum alloy to form a melt, wherein the grain refiner comprises (i) Ti and (ii) B or C, such that the concentration in the melt of R or C from the grain refiner is about 0.003-0.010 wt. %; and c) solidifying the melt to form an ingot or a casting.
2. The method of claim 1 wherein the alloying element is Ti and the concentration of Ti in the molten aluminum alloy is about 0.015-0.030 wt.
%.
%.
3. The method of claim 1 wherein the alloying element is Sc and the concentration of Sc in the molten aluminum alloy is about 0.030-0.10 wt.
%.
%.
4. The method of claim 1 wherein the alloy is a wrought alloy.
5. The method of claim 4 wherein the alloy is a IXXX, 2XXX, 3XXX, 5XXX, 6XXX, 7XXX or 8XXX series alloy.
6. The method of claim 5 wherein the alloy is a 2XXX or 7XXX
series alloy.
series alloy.
7. The method of claim 6 wherein the alloy is a 705 or 7050 alloy.
8. The method of claim 1 wherein the alloy is a casting alloy.
9. The method of claim 8 wherein the alloy is a 2XX, 3XX, 4XX, 5XX, 7XX or 8XX series alloy.
10. The method of claim 1 wherein grain in the ingot or casting are about 200 microns or less in size.
11. The method of claim 10 wherein grains in the ingot or casting are about 100 microns or less in size.
12. In a method of producing fine grain aluminum having the steps of providing a molten aluminum alloy comprising about 0.015-0.030 wt.
Ti, adding a grain refiner to the molten alloy to form a melt, wherein the grain refiner includes Ti and B or C, and solidifying the melt, the improvement comprising:
adding the grain refiner in an amount such that the concentration in the melt of B or C from the grain refiner is about 0,003-0.010 wt. %.
Ti, adding a grain refiner to the molten alloy to form a melt, wherein the grain refiner includes Ti and B or C, and solidifying the melt, the improvement comprising:
adding the grain refiner in an amount such that the concentration in the melt of B or C from the grain refiner is about 0,003-0.010 wt. %.
13. The method of claim 12 wherein the alloy is a casting alloy.
14. The method of claim 12 wherein the alloy is a wrought alloy.
15. The method of claim 12 wherein grains in the ingot are about 200 microns or less in size.
16. The method of claim 15 wherein grains in the ingot are about 100 microns or less in size.
17. An ingot of an aluminum alloy comprising:
an aluminum alloy comprising an alloying element selected from the group consisting of Ti, Sc, Zr, V, f-Hf, Nb and Y; and a grain refiner comprising (i) Ti and (ii) B ox C, wherein the concentration in the ingot of B on C from the grain refiner is about 0.003-0.010 wt. %.
an aluminum alloy comprising an alloying element selected from the group consisting of Ti, Sc, Zr, V, f-Hf, Nb and Y; and a grain refiner comprising (i) Ti and (ii) B ox C, wherein the concentration in the ingot of B on C from the grain refiner is about 0.003-0.010 wt. %.
18. The ingot of claim 17 wherein said alloying element is Ti and the concentration of Ti in the aluminum alloy is about 0.015-0.030 wt. %.
19. The ingot of claim 17 wherein said alloying element is Sc and the concentration of Sc in the aluminum alloy is about 0.030-0.10 wt. %.
20. The ingot of claim 17 wherein the alloy is a wrought alloy.
21. The ingot of claim 17 wherein the alloy is a casting alloy.
22. The ingot of claim 17 wherein grains in the ingot are about 200 microns or less in size.
23. The ingot of claim 21 wherein grains in the ingot are about 100 microns or less in size.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71017500A | 2000-11-10 | 2000-11-10 | |
| US09/710175 | 2000-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2361484A1 true CA2361484A1 (en) | 2002-05-10 |
Family
ID=24852923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2361484 Abandoned CA2361484A1 (en) | 2000-11-10 | 2001-11-08 | Production of ultra-fine grain structure in as-cast aluminum alloys |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1205567B1 (en) |
| CA (1) | CA2361484A1 (en) |
| DE (1) | DE60110523D1 (en) |
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| GB201102849D0 (en) | 2011-02-18 | 2011-04-06 | Univ Brunel | Method of refining metal alloys |
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| CN103060584B (en) * | 2012-12-21 | 2015-05-20 | 佛山市深达美特种铝合金有限公司 | Ultra-fine grain 6061 aluminum alloy and preparation method thereof |
| CN103614581B (en) * | 2013-12-20 | 2015-09-30 | 西南铝业（集团）有限责任公司 | A kind of production technique of 1 line aluminium alloy cast ingot |
| CA2942338A1 (en) * | 2014-03-11 | 2015-09-17 | Sapa Extrusions, Inc. | High strength aluminum alloys |
| CN105624481A (en) * | 2016-03-28 | 2016-06-01 | 福建省科源新型材料有限公司 | Aluminium product preparation technology capable of reducing cost and energy consumption |
| CN109385542B (en) * | 2018-09-17 | 2020-11-24 | 上海大学 | Preparation method of aluminum-niobium-boron alloy rod for grain refinement |
| CN110983213B (en) * | 2019-11-12 | 2021-06-04 | 上交大(徐州)新材料研究院有限公司 | Preparation method of high-strength and high-toughness thin-strip aluminum with superfine structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810455B2 (en) * | 1979-11-20 | 1983-02-25 | 昭和軽金属株式会社 | Aluminum alloy for rolling |
| US5100488A (en) * | 1988-03-07 | 1992-03-31 | Kb Alloys, Inc. | Third element additions to aluminum-titanium master alloys |
| WO1996010099A1 (en) * | 1994-09-26 | 1996-04-04 | Ashurst Technology Corporation (Ireland) Limited | High strength aluminum casting alloys for structural applications |
| NO990813L (en) * | 1999-02-19 | 2000-08-21 | Hydelko Ks | Alloy for grain refinement of aluminum alloys |
| US6368427B1 (en) * | 1999-09-10 | 2002-04-09 | Geoffrey K. Sigworth | Method for grain refinement of high strength aluminum casting alloys |
-
2001
- 2001-11-08 EP EP20010126694 patent/EP1205567B1/en not_active Revoked
- 2001-11-08 CA CA 2361484 patent/CA2361484A1/en not_active Abandoned
- 2001-11-08 DE DE60110523T patent/DE60110523D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251675A (en) * | 2017-12-26 | 2018-07-06 | 上海大学 | A kind of cast Al-Si alloy Al-Ti-Nb-B fining agents and preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1205567A3 (en) | 2002-06-05 |
| EP1205567A2 (en) | 2002-05-15 |
| DE60110523D1 (en) | 2005-06-09 |
| EP1205567B1 (en) | 2005-05-04 |
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