| 摘要 |
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 Al3Zr phase. The alloy has an elongation greater than 500% at temperature above about 500 DEG C. and a strain rate above about 4x10-2/s.
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