上游充通大粤 e SHANGHAI JIAO TONG UNIVERSITY Usage of phase diagrams 1 al with multi-components system -phase rule -Phase diagrams: 1.equilibrium phases under different conditions 2.What will happen to the phases while the Temp,pressure and/or composition changes 3.The conditions for phase transformation To investigate new materials Critical evidence to analyze the alloy components,chemical composition, and to design the manufacturing and thermal treatment process 8Usage of phase diagrams 1 To deal with multi-components system -phase rule -Phase diagrams: 1.equilibrium phases under different conditions 2.What will happen to the phases while the Temp, pressure and/or composition changes 3.The conditions for phase transformation To investigate new materials Critical evidence to analyze the alloy components, chemical composition, and to design the manufacturing and thermal treatment process 8