For alloys of two hypothetical metals A and B, there exist an , A-rich phase and a , Brich phase. From the mass fractions of both phases for two different alloys provided in the following table (which are at the same temperature), determine the composition of the phase boundary (or solubility limit) for both and phases at this temperature. Alloy Composition Fraction Fraction Phase
Phase
60 wt% A-40 wt% B 0.57 0.43
30 wt% A-70 wt% B 0.14 0.86