Elevated temperature aluminum alloys

Details Elevated temperature aluminum alloys Elevated temperature aluminum alloys

1987-07-30

1989-08-29

Dean, R.

Alloys or metallic compositions

Aluminum base

Copper containing

420535, C22C 2100

Patent

active

048615510

ABSTRACT:
Three aluminum-lithium alloys are provided for high performance aircraft structures and engines. All three alloys contain 3 wt % copper, 2 wt % lithium, 1 wt % magnesium, and 0.2 wt % zirconium. Alloy 1 has no further alloying elements. Alloy 2 has the addition of 1 wt % iron and 1 wt % nickel. Alloy 3 has the addition of 1.6 wt % chromium to the shared alloy composition of the three alloys. The balance of the three alloys, except for incidentql impurities, is aluminum. These alloys have low densities and improved strengths at temperatures up to 260.degree. C. for long periods of time.

REFERENCES:
patent: 1305551 (1918-08-01), Kirk
patent: 1870732 (1931-01-01), Iytaka
patent: 4094705 (1978-06-01), Sperry et al.
patent: 4193822 (1980-03-01), Adam et al.
patent: 4477292 (1984-10-01), Brown
patent: 4588553 (1986-05-01), Evans et al.

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