Lee Hsun Lecture Series

Topic: Computational Thermodynamics and the Calphad Method: The Basics

Speaker:Dr. R. Schmid-Fetzer

　　　　Clausthal University of Technology,
　　　　　　Clausthal-Zellerfeld, Germany

Time:　  9:30-11:30, (Tues.), 1, June 2010

Venue:　 Room 403, R&D Building , IMR CAS

Welcome to attend!

 

Computational Thermodynamics and the Calphad Method: The Basics

Abstract:

A basic overview and introduction is given for the following methods and tools:

• Calphad Method, which aims at the generation of a thermodynamic description using all available experimental & theoretical data for a consistent modeling of thermodynamics and constitution

• Computational Thermodynamics, which involves the application of "Calphad-generated" databases in Materials Science & Engineering, specifically for multicomponent and multiphase material systems

We will go through a brief summary of thermodynamic software, data & databases, especially for light alloys. Inherent problems in the classical approach of reaction equations (example SiO2 + 2 C = ?) will be elucidated by global chemical equilibrium calculations. Solidification of multicomponent alloys can be quantitatively treated by the two extreme models (Equilibrium and Scheil) without knowing any kinetic material parameters and this will be detailed for the example of Mg-Al-Zn alloys. Finally, an application to the solidification behavior of monotectic ternary Al-alloys will be given.