An aluminumlithium alloy of composition 55 at A l 45 at Li

An aluminum-lithium alloy of composition 55 at % A l -45 at % Li is slowly heated from room temperature. At what temperature does the first liquid phase form? What is the composition of this liquid phase? At what temperature does complete melting of the alloy occur? What is the composition of the last solid remaining prior to complete melting?

Solution

1 at 869 K first liquid phase forms

2. Liquid phase is 50 % Al composition

3. at 915 k total liquid phase occures

4. 18 % Al at last solid remaining.