Phase Equilibria: Solubility Limit Sucrose/Water Phase Diagram Pure Sugar Temperature (°C) 0 20 4060 80100 Co=Composition (wt% sugar) L (liquid solution.

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Presentation transcript:

Phase Equilibria: Solubility Limit Sucrose/Water Phase Diagram Pure Sugar Temperature (°C) Co=Composition (wt% sugar) L (liquid solution i.e., syrup) Solubility Limit L (liquid) + S (solid sugar) PureWater

Components and Phases Aluminum- Copper Alloy  (darker phase)  (lighter phase)

Effect of T & Composition (C o ) Temperature (°C) CoCo =Composition (wt% sugar) L ( liquid solution i.e., syrup) L (liquid) + S (solid sugar) water- sugar system

Phase Diagrams Phase Diagram for Cu-Ni system wt% Ni T(°C) L (liquid)  (FCC solid solution) L +  liquidus solidus

wt% Ni T(°C) L (liquid)  (FCC solid solution) L +  liquidus solidus Cu-Ni phase diagram Phase Diagrams : Number and types of phases

wt% Ni T(°C) L (liquid)  (solid) L +  liquidus solidus L +  Cu-Ni system Composition of phases

Weight fractions of phases wt% Ni T(°C) L (liquid)  (solid) L +  liquidus solidus L +  Cu-Ni system

The Lever Rule wt% Ni T(°C) L (liquid)  (solid) L +  liquidus solidus L +  B T B tie line C o C L C  S R

wt% Ni L (liquid)  (solid) L +  L +  T(°C) 35 C o Cu-Ni system Cooling in a Cu-Ni Binary

Mechanical Properties: Cu-Ni System --Tensile strength (TS)--Ductility (%EL,%AR) Tensile Strength (MPa) Composition, wt% Ni Cu Ni TS for pure Ni TS for pure Cu Elongation (%EL) Composition, wt% Ni Cu Ni %EL for pure Ni %EL for pure Cu

Binary Eutectic Systems

Binary-Eutectic Systems Cu-Ag system L (liquid)  L +  L+    CoCo,wt% Ag T(°C) CECE TE °C

Binary-Eutectic Systems Cu-Ag system L (liquid)  L +  L+    CoCo,wt% Ag T(°C) CECE TE °C

Binary-Eutectic Systems Cu-Ag system L (liquid)  L +  L+    CoCo,wt% Ag T(°C) CECE TE °C

Microstructures in Eutectic Systems: I 0 L +  200 T(°C) CoCo,wt% Sn CoCo L  30  +  400 (room T solubility limit) TETE (Pb-Sn System)

Microstructures in Eutectic Systems: II Pb-Sn system L +  200 T(°C) CoCo,wt% Sn CoCo L  30  +  400 (sol. limit at T E ) TETE 2 (sol. limit at T room )

Microstructures in Eutectic Systems: III Pb-Sn system LL  200 T(°C) C, wt% Sn L   L+  183°C 40 TETE CECE 61.9

Microstructures in Eutectic Systems: III 160  m Micrograph of Pb-Sn eutectic microstructure

Lamellar Eutectic Structure

Microstructures in Eutectic Systems: IV Pb-Sn system L+  200 T(°C) C o, wt% Sn L   L+  40  +  TETE L: C o wt% Sn