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Modelling of Phase Diagrams for High Temperature Materials

Researcher: Mr Sebastian Fox,

Supervisor: Dr. Nils Warnken

Modelling of Phase Diagrams for High Temperature Materials

Phase diagrams are used to understand the interconnected relationship between a materials chemical composition, its processing conditions, its microstructure, and its physical properties.  Traditionally, the experimental determination of phase diagrams for multi-component alloys has always been an expensive and time consuming process.  However, with the development of computational methods such as the CALPHAD technique, accurate phase diagrams can now be produced in less time and at a reduced cost.  These methods use data from a range of sources to model the thermodynamic properties of each phase and simulate multicomponent, multi-phase behaviour to produce a complete phase diagram for the required system.

In this project, the CALPHAD method is being used to develop thermodynamic descriptions of phase equilibria in alloy systems that have been identified as potential new high temperature alloys.  We hope to produce detailed databases on these systems for the purpose of developing new materials for gas turbine and other high temperature applications.

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