Heat-resistant, creep-resistant aluminum alloy and billet...

Details Heat-resistant, creep-resistant aluminum alloy and billet... Heat-resistant, creep-resistant aluminum alloy and billet...

2005-11-08

2005-11-08

Wyszomierski, George (Department: 1742)

Alloys or metallic compositions

Aluminum base

Silicon containing

C420S551000, C148S437000

Reexamination Certificate

active

06962673

ABSTRACT:
A heat-resistant, creep-resistant aluminum alloy according to the present invention contains at least 10 mass % and not more than 30 mass % of silicon, at least 3 mass % and not more than 10 mass % of at least either iron or nickel in total, at least 1 mass % and not more than 6 mass % of at least one rare earth element in total and at least 1 mass % and not more than 3 mass % of zirconium with the rest substantially consisting of aluminum, while the mean crystal grain size of silicon is not more than 2 μm, the mean grain size of compounds other than silicon is not more than 1 μm, and the mean crystal grain size of an aluminum matrix is at least 0.2 μm and not more than 2 μm. Thus, an aluminum alloy excellent in heat resistance and creep resistance is obtained.

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