Abstract
The dependence of structural changes in precipitating Al -- 10 at. % Li alloy on the annealing temperature, as traced by X-rays, electric resistivity and microhardness measurements, revealed the formation and subsequent dissolution of Al -- Li precipitates in the temperature range of 25-500 deg C. The observed variations were attributed to the effect of the annealing temperature on the behavior of Li atoms within the Al matrix. The increase of the Li concentration in the matrix due to the dissolution of Al -- Li precipitates, being 3.75 at. % Li as obtained from X-ray measurements, agreed well with the value 4.0 at. % Li obtained from resistivity measurements.11 refs.--M.T.