Explaining the Point,Line and Phase Region of Iron-carbon Diagram Based on the Classification Method
Wenlin Xie · Guangzhou Chemical Industry · 2015
The characteristic point,characteristic curves and phase region in the iron- carbon alloy phase diagram were classified into three,three allotropic transformation,three horizontal lines and three solubility curve group by classification method. On this basis,phase diagram analysis was easy. First of all finding Fe3 C and marking out the L phase,then marking δ phase,α phase and γ phase according the iron's allotropic transformation,finally,using the method of left phase and right phase,the two-phase region can be rapidly annotated. This method makes the phase diagram more rational in teaching and learning and it has better auxiliary function for the analysis of the crystallization process of the iron carbon alloy.