二元例题2b S.J.T.U. Phase Transformation and Applications Page 9/34 Molar Gibbs free energy of What is the most stable state solution,drawn at T and P of the system at an average constant for an a phase and composition of X,？ B phase. Suppose the a-phase was somehow prevented from forming (i.e., consider the B-phase equilibrium under the a-phase constraint that the a-phase is absent).In this case,what would be the equilibrium state of the system with average composition X,？ XB SJTU Thermodynamics of Materials Spring 2008 ©X.J.Jin Lecture 18 Phase Diagram IVPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Lecture 18 Phase Diagram IV Page 9/34 二元例题 2b • What is the most stable state of the system at an average composition of X0? • Suppose the α-phase was somehow prevented from forming (i.e., consider the equilibrium under the constraint that the α-phase is absent). In this case, what would be the equilibrium state of the system with average composition X0? Molar Gibbs free energy of solution, drawn at T and P constant for an α phase and β phase