铁素体在夹杂物上的形核机制及界面能计算

It is well known from experiments that intragranular ferrite nucleates on inclusions, which refines the microstructure of steels effectively. However, the mechanism by which inclusions simulate ferrite nucleation is still far from fully understood. The interfacial energy of inclusions with metals, the strain energy during cooling due to the difference of thermal expansion coefficients between inclusion and matrix and the solute depletion zone around the inclusions, etc are discussed as possible factors related to the ferrite nucleation in the present paper, in order to identify the roles of various inclusions on the intragranular ferrite transformation.