Casting aluminum alloy and aluminum castings cast using the same

The aluminum alloy formulation with controlled Ni, Cu, and optional Si, Mg, and P content disperses intermetallic phases to form a network structure, addressing rigidity and tensile strength limitations in existing alloys, achieving improved mechanical performance.

JP7768545B2Active Publication Date: 2025-11-12HINODE HOLDINGS CO LTD
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Patent Information

Application Number
JP2021562701
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-12-04
Filing Date
2020-12-03
Publication Date
2025-11-12
Estimated Expiration
2040-12-03

AI Technical Summary

Technical Problem

Existing aluminum alloys for casting lack sufficient rigidity and tensile strength, with existing intermetallic compound phases not effectively dispersed or networked to enhance mechanical properties.

Method used

The aluminum alloy is formulated with specific ranges of Ni, Cu, and optionally Si, Mg, and P to disperse and crystallize intermetallic compound phases, forming a network-like structure that improves rigidity and tensile strength by coexisting phases in different crystallization regions.

Benefits of technology

The alloy achieves enhanced rigidity and tensile strength, with balanced mechanical properties through controlled intermetallic compound phase distribution, suitable for applications requiring high mechanical performance.

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Abstract

An aluminum alloy for casting according to the present invention contains 1.0-10.0 mass% of Ni and 8.01-18.0 mass% of Cu, with the remainder comprising Al and unavoidable impurities.　The aluminum alloy for casting according to the present invention further contains 5.0-20.0 mass% of Si.　The aluminum alloy for casting according to the present invention further contains 0.0001-0.1 mass% of P.　The aluminum alloy for casting according to the present invention further contains 0.01-3.0 mass% of Mg.　The aluminum alloy for casting according to the present invention has improved rigidity and tensile strength.
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Citation Information

Patent Citations

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    EP2748347B1

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    JP1979000845A

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    JP1989247550A

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    JP1992105787A

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    JP1997272939A