Process for making aluminum-lithium alloys of high toughness

Details Process for making aluminum-lithium alloys of high toughness Process for making aluminum-lithium alloys of high toughness

1989-03-24

1992-02-04

Dean, R.

Alloys or metallic compositions

Aluminum base

75678, 75686, 420533, 420543, C22C 102

Patent

active

050858300

ABSTRACT:
The toughness of Al-Li, Al-Mg and Mg-Li alloys is increased by a melting and refining process designed to reduce the concentration of alkali metal impurities below about 1 ppm and preferably below about 0.1 ppm. The hydrogen and chlorine gas constituents are also significantly reduced.

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