15:48:33 S.J.T.U. Phase Transformation and Applications Page 15/46 V+xa =7B OxB)T.P XA V-XB7 xB)T.P xB XA Pur Pu A B XB> Figure 7.3 Plot of V versus xB to show geometrical relationships in an A-B solution. SJTU Thermodynamics of Materials Spring2007©X.J.Jin Lecture 12 Solution IlPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2007 © X. J. Jin Lecture 12 Solution II Page 15/46 15:48:33 A B PT B V x V xV = ⎟⎟⎠⎞ ⎜⎜⎝⎛ ∂∂ − , B B PT A V x V xV = ⎟⎟⎠⎞ ⎜⎜⎝⎛∂∂ +