Quantitative Phase Analysis of Al-Mg-Li and Al-Cu-Li Alloys

On the basis of the balance equations of chemical and phase composition of the Al-Mg-Li and Al-Cu-Li alloys developed a method of determining the amount of intermetallic phases from the experimentally measured value of the lattice parameter of α-solid solution. In alloys of Al-Mg (Cu)-Li the relative phase ratio of the δ'(Al3Li) and S1 (T1) are determined by the atomic percentage ratio of the Li and Mg (Cu).