Abstract
The high mechanical properties of the Al-Li-X alloys contribute to their
increasingly broad application in aeronautics, as an alternative forthe
aluminium alloys, which have been used so far. The aluminium-lithium
alloys have a lower specific gravity, a higher nucleation andcrack spread
resistance, a higher Young’s module and they characterize in a high crack
resistance at lower temperatures. The aim of theresearch planned in this
work was to design an aluminium alloy with a content of lithium and other
alloy elements. The research includedthe creation of a laboratorial melt,
the microstructure analysis with the use of light microscopy, the
application of X-ray methods to identify the phases existing in the alloy,
and the microhardness test.
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