Toughness enhancement of Al-Li-Cu-Mg-Zr alloys produced using th

Details Toughness enhancement of Al-Li-Cu-Mg-Zr alloys produced using th Toughness enhancement of Al-Li-Cu-Mg-Zr alloys produced using th

1992-03-27

1993-06-29

Dean, R.

Alloys or metallic compositions

Aluminum base

Copper containing

148549, 148417, 148439, 420535, 420543, 420552, C22C 2106, C22F 104

Patent

active

052232166

ABSTRACT:
An Al-Li alloy consists essentially of the formula Al.sub.bal Li.sub.a Cu.sub.b Mg.sub.c Zr.sub.d wherein "a" ranges from about 1.9 to 3.4 wt %, "b" ranges from about 0.5 to 2.0 wt %, "c" ranges from 0.2 to 2.0 wt % and "d" ranges from about 0.3 to 1.2 wt %, the balance being aluminum. The alloy is solidified at a cooling rate of about 10.sup.3 .degree.-10.sup.4 .degree. C./sec by spray forming, and is characterized by a substantial absence of prior particle boundaries.

REFERENCES:
patent: 4661172 (1987-04-01), Skinner et al.
patent: 4816087 (1989-03-01), Cho
patent: 4995920 (1991-02-01), Faure et al.
Conference Proceedings of Aluminum-Lithium V, edited by T. H. Sanders and E. A. Starke, pub MCE, (1989).
Hughes et al., "Spray Deposition of Aluminum-Lithium Alloys", Proceedings of Aluminum-Lithium VI Conf., Garmisch-Partenkirchen, Oct. 1991.

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