Estimation of pearlite fraction in ductile cast irons by eddy current method

The eddy current method has been used for estimation of the pearlite amount in ductile cast irons. Regression analysis has showed good assessment of the matrix structure of cast irons having different chemical compositions as well as graphite particle size and count by means of the eddy current method. Pearlite content of tested cast irons was shown to have paramount effect on the eddy current probe response from them and predictability of pearlite amount improves for specimens with similar composition or graphite shape.