EP0144898A2
Expired / Lapsed
EP
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Aluminum alloy and method for producing same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1984-11-27
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Granted: —
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Expires: 2004-11-27
Abstract
Abstract Aluminum alloy comprises 10 to 36 wt% of Si, 2 to 10 wt% of at least one metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of aluminum. The aluminum alloy further includes 1.0 to 12 wt% of Cu and 0.1 to 3.0 wt% of Mg. In a method for producing the aluminum alloy the steps comprises preparing powder mixtures including Si, at least one of metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of Al, producing aluminum alloy powders, compacting the aluminum alloy powders into a shape and hot working the aluminum alloy powder compact.
Inventors
- 👤 Yusuke C/O Itami Works Of Sumitomo Odani
- 👤 Kiyoaki C/O Itami Works Of Sumitomo Akechi
- 👤 Nobuhito C/O Itami Works Of Sumitomo Kuroishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 23:22
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02; C22C21/04; C22C1/00; C22C1/04; C22C1/0408; C22C1/0416
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
37 words
Aluminum alloy comprising 10 to 36 wt% of Si, 2 to 10 wt% of at least one of metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of aluminum.
Claim 2
Dependent Claim
37 words
Aluminum alloy comprising 10 to 36 wt% of Si, 2 to 10 wt% of at least one of metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of aluminum.
Claim 3
Dependent Claim
21 words
The aluminum alloy of claim 1, further comprising 1.0 to 12 wt% of Cu and 0.1 to 3.0 wt% of Mg.
Claim 4
Dependent Claim
21 words
The aluminum alloy of claim 1, wherein the amount of said Si is in a range of 10 to 20 wt%.
Claim 5
Independent Claim
68 words
A method for producing aluminum alloy comprising the steps of: preparing powder mixtures including 10 to 36 wt% of Si, 2 to 10 wt% of at least one of metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of Al; producing aluminum alloy powders; compacting said aluminum alloy powder into a shape; and hot working said aluminum alloy powder compact.
Claim 6
Independent Claim
68 words
A method for producing aluminum alloy comprising the steps of: preparing powder mixtures including 10 to 36 wt% of Si, 2 to 10 wt% of at least one of metal selected from the group consisting of Fe, Ni, Co, Cr and Mn, and remainder consisting essentially of Al; producing aluminum alloy powders; compacting said aluminum alloy powder into a shape; and hot working said aluminum alloy powder compact.
Claim 7
Dependent Claim
30 words
The method of claim 4, wherein 1.0 to 12 wt% of Cu and 0.1 to 3.0 wt% of Mg are further included in said powder mixtures in said preparation step.
Claim 8
Dependent Claim
32 words
The method of claim 4 or 5, wherein said forming aluminum alloy powders comprises the step of atomizing said powder mixtures, the atomized aluminum alloy powders having a mesh size -40 mesh.
Claim 9
Dependent Claim
27 words
The method of claim 4 or 5, wherein each of said aluminum alloy powders has primary silicon crystal having crystal grain size not more than 10 µm.
Claim 10
Dependent Claim
20 words
The method of claim 4 or 5, wherein said compacting step comprises filling said aluminum alloy powders into a can.
Claim 11
Dependent Claim
21 words
The method of claim 4 or 5, wherein said compacting step comprises compacting said aluminum alloy powders by a metal die.
Claim 12
Independent Claim
31 words
The method of claim 4_or 5, wherein said compacting step comprises pressing said aluminum alloy powders with cold-isostatic-pressure to obtain aluminum alloy powder preform having actual density not less than 95%.
Claim 13
Dependent Claim
39 words
The method of claim 4 or 5, wherein said hot working step comprises heating said aluminum alloy powder compact at a temperature ranging from 250°C to 550°C, and extruding said compact at the extrusion ratio not less than 4:1.
Claim 14
Dependent Claim
14 words
The method of claim 11, wherein said extrusion ratio is not less than 10:1.
Claim 15
Dependent Claim
30 words
The method of claim 10, wherein said hot working step comprises heating said preform, at a temperature raging from 250°C to 550°C, and forging said preform in a metal die.
Claim 16
Dependent Claim
48 words
Aluminum alloy comprising 7.0 to 17.0 wt% of Si, not more than 12 wt% of Fe, not more than 2 wt% of Mg, not more than 6.5 wt % of Cu, and remainder Al, the aluminum alloy having modulus of elasticity not less than 8000 kg/mm 2 .
Claim 17
Dependent Claim
48 words
Aluminum alloy comprising 7.0 to 17.0 wt% of Si, not more than 12 wt% of Fe, not more than 2 wt% of Mg, not more than 6.5 wt % of Cu, and remainder Al, the aluminum alloy having modulus of elasticity not less than 8000 kg/mm 2 .
Claim 18
Independent Claim
55 words
A method for producing aluminum alloy comprising the steps of: preparing powder mixture including 7.0 to 17.0 wt% of Si, not more than 12 wt% of Fe, not more than 2 wt% of Mg, not more than 6.5 wt% of Cu, and remainder Al; producing aluminum alloy powders; and hot working said aluminum alloy powders.
Claim 19
Independent Claim
55 words
A method for producing aluminum alloy comprising the steps of: preparing powder mixture including 7.0 to 17.0 wt% of Si, not more than 12 wt% of Fe, not more than 2 wt% of Mg, not more than 6.5 wt% of Cu, and remainder Al; producing aluminum alloy powders; and hot working said aluminum alloy powders.
Claim 20
Dependent Claim
34 words
The method of claim 15, wherein said forming step comprises melting said powder mixture in a bath, and atomising said molten mixture to obtain aluminum alloy powders each having a mesh size -40 mesh.
Claim 21
Dependent Claim
36 words
The method of claim 15, wherein said forming step comprises melting said powder mixture and rapidly cooling the molten mixture at the cooling velocity not less than 10 2 K /s to obtain aluminum alloy powders.
References Cited (Backward Citations)
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