Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder pretreatment
Patent
1989-09-20
1990-10-16
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Powder pretreatment
419 23, 75249, 420516, 420518, B22F 400
Patent
active
049633228
ABSTRACT:
The invention relates to a process for the production of aluminum alloy components retaining a good fatigue strength when used hot.
This process consists of producing an alloy containing 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, subjecting the alloy in the molten state to a fast solidification means, bringing it into the form of parts or 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.
These components are used more particularly as rods, piston rods and pistons.
REFERENCES:
patent: 3899820 (1975-08-01), Read et al.
patent: 4347076 (1982-08-01), Ray et al.
patent: 4592781 (1986-06-01), Cheney et al.
patent: 4647321 (1987-03-01), Adam
patent: 4676830 (1987-06-01), Inumaru et al.
patent: 4732610 (1988-03-01), Hildeman et al.
patent: 4737339 (1988-04-01), Couper
Lechert Jr. Stephen J.
Pechiney Recherche Groupement d'Interet Economique
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