3.1 The property relation S.J.T.U. Phase Transformation and Applications A closed system consisting of a homogeneous material with uniform properties throughout First law:dU =80+oW Second law:ds= 80 w T T Tds 80-8lw dU Tds +SW Slw Tds +8Wrer All the work terms: dU=Tds-PdV Surface,electrical,stress effects,etc dH Tds+VdP SJTU Thermodynamics of Materials Fall 2018 ©X.JJin Lecture 5 property relationPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2018 © X. J. Jin Lecture 5 property relation 3.1 The property relation A closed system consisting of a homogeneous material with uniform properties throughout. First law: dU = Q +W Second law: T lw T Q dS   = − TdS = Q −lw TdS Wrev dU = TdS +W +l w = + All the work terms: Surface, electrical, stress effects, etc dU =TdS − PdV dH =TdS +VdP