Abstract
The lattice dynamics and thermal properties of α-phase Al-Li alloy by solid-solutioning under pressure are studied using our previous microscopic electronic theory. The phonon frequencies of the band and local modes and the lattice specific heat at constant volume are presented theoretically for the Al1-xLix system. The band and local mode frequencies increase with the solubility of Li, and the specific heat decreases except at low temperatures. The Debye temperature for the AI1-xLix system is estimated from the specific heat at low temperatures and from the average elastic velocity. The Debye temperature decreases as Li content increases.
