A New Method for Determining the Inhomogeity of Eutectic Carbides in Mo-series High Speed Steels

The inhomogenous distribution degree of eutectic carbides in Mo-series high speed steels has been determined in automatic image analyzer,all experimental data were regressed at the aid of a computer.The results indicated that the total area percentage of carbide,the average width of carbide band,the percent of carbides in band per total carbides were the numeric parameters to measure this inhomogenous distribution,and the quantitative relationship between the rating numbers in Mo-series HSS and these parameters could be represented as Y=-2.133 0+0.223 7x1-11.049 0x3+0.107 3x4.The results have been proved effectively by real specimens.