Inventors:
Nack J. Kim - Florham Park NJ
Eui W. Lee - Warminster PA
Assignee:
Allied-Signal Inc. - Morris Township, Morris County NJ
International Classification:
C22F 104
Abstract:
A rapidly solidified aluminum base lithium containing alloy is subjected to at least one overaging treatment and a plurality of rolling passes. Upon completion of the process, the alloy is comprised of grains having an ultrafine grain size. A predominant number of the grains have grain boundaries pinned by the precipitation of Al. sub. 3 Zr phase. The alloy has an elongation greater than 500% at temperature above about 500. degree. C. and a strain rate above about 4. times. 10. sup. -2 /s.
