Temperature (°C) Problem 2. During the equilibrium cooling of the isomorphous Cu-Ni alloy with 35 wt% Ni, when the temperature slowly drops from 1300°C (point a) to 1250°C (point c), solid particles of the a phase form in the liquid. (a) What is the composition of the a phase particles? (b) What is the weight fraction of these a phase particles in the whole alloy system? L L (35 Ni) L (35 Ni) a (46 Ni) 1300 1200 L(24 Ni) 1100 20 30 L(32 Ni) ib 40 a(43 Ni) a(46 Ni) (43 Ni) L(32 Ni)- L(24 Ni) a(35 Ni)- a a a (35 Ni)- a Composition (wt% Ni) 50