Aluminum alloy with good fatigue strength

Details Aluminum alloy with good fatigue strength Aluminum alloy with good fatigue strength

1990-07-23

1991-02-12

Dean, R.

Alloys or metallic compositions

Aluminum base

Copper containing

420543, 420547, 420551, 420553, 148417, 148439, C22C 2108, C22C 2100, C22C 2106

Patent

active

049922424

ABSTRACT:
The invention relates to an aluminum alloy component retaining a good fatigue strength when used hot. The alloy contains by weight 11 to 26% silicon, 2 to 5% iron, 0.5 to 5% copper, 0.1 to 2% magnesium, 0.1 to 0.4% zirconium and 0.5 to 1.5% manganese, the alloy in the molten state is subjected to a fast solidification means, bringing it into the form of parts of components and optionally subjecting the latter to a heat treatment at between 490.degree. and 520.degree. C., followed by water hardening and annealing at between 170.degree. and 210.degree. C. Components formed of the alloy are used more particularly as rods, piston rods and pistons.

REFERENCES:
patent: 4434014 (1984-02-01), Smith
patent: 4847048 (1989-07-01), Nishi et al.
patent: 4923676 (1990-08-01), Faure

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