Low density aluminum alloy for engine pistons

Details Low density aluminum alloy for engine pistons Low density aluminum alloy for engine pistons

1991-12-09

1992-12-08

Dean, R.

Metal treatment

Stock

Aluminum base

148437, 420528, 420532, 420535, 420539, 420541, 420544, 420551, 420553, C22C 2100

Patent

active

051694620

ABSTRACT:
An aluminum-lithium based alloy which comprises 10-20 wt. % silicon, 1.5-5.0 wt. % copper, 1.0-4.0 wt. % lithium, 0.45-1.5 wt. % magnesium, 0.01-1.3 wt. % iron, 0.01-0.5 wt. % manganese, 0.01-1.5 wt. % nickel, 0.01-1.5 wt. % zinc, 0.01-0.5 wt. % silver, 0.01-0.25 wt. % titanium and the balance aluminum. The alloy is utilized to cast high temperature assemblies including pistons which have a reduction in density and similar mechanical properties including tensile strengths to alloys presently used.

REFERENCES:
patent: 5032359 (1991-07-01), Pickens et al.

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