Dissemination of IT for the Promotion of Materials Science (DoITPoMS)

DoITPoMS Teaching & Learning Packages Ternary Phase Diagrams Aims
Ternary Phase Diagrams AimsBefore you startIntroductionRepresenting ternary phase diagramsSections through ternary phase diagramsTie lines and tie trianglesApplying the Gibbs phase rule to ternary systemsSolidification of ternary alloys – complete solid solutionSolidification of ternary alloys – one eutectic valleySolidification of ternary alloys – Class I reactionsSolidification of ternary alloys – Class II reactionsSolidification of ternary alloys – Class III reactionsCase Study: Sn-Ag-Cu systemUses of ternary alloysSummaryQuestionsGoing further
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Aims

On completion of this teaching and learning package, you should:

  • Understand conventions used in representing ternary phase diagrams
  • Be able to read off and plot compositions on a ternary phase diagram
  • Understand the advantages and disadvantages of different sections taken from a ternary phase diagram
  • Be able to determine the composition of phases in two and three phase regions from tie lines and tie triangles
  • Be able to apply the Gibbs phase rule to ternary systems
  • Understand the solidification process for alloys in different ternary systems
  • Know of a few industrially useful ternary alloys
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