Mathematical formalisms to represent knowledge concerning the production process of austempered ductile iron

Abstract

The aim of this study is to develop computer tools for calculation of the Fe - Fe3C phase equilibrium diagram. The phase equilibrium diagram is of fundamental importance in materials science and heat treatment processes of ferrous alloys. It enables prediction of carbon steel microstructure in the annealed condition, and facilitates selection of proper temperature for the heat treatment process. Choosing the right values of the heat treatment process parameters is essential in the production of Austempered Ductile Iron (ADI).

Keywords

• Fe – Fe₃C diagram
• phase equilibrium diagram
• ADI
• CALPHAD method