INFLUENCE OF MAGNETIC FIELDS ON PHASE EQUILIBRIUM OFγ/α AND α/γ IN FE-C BINARY SYSTEM

摘要

The effect of magnetic fields on equilibrium of austenite/ferrite and ferrite/austenite phase boundaries is studied by applying both the Weiss molecular field theory and the itinerant theory to calculate Gibbs magnetic free energy of ferritic and austenitic phases. Results show that magnetic fields have cohsiderable influence on austenite/ferrite boundary that makes it move to the higher carbon content or higher temperature side. The Ae_3 temperature is raised 2～3°C per one Tesla depending on the carbon content.