抄録
A study has been made on the graphitization and mechanical properties of the calcium treated graphite steel containing 0.57∼1.78%Mn, 0.26∼1.41%Cr, 0.37∼1.83%Ni or 0.32∼1.63%Cu. Where carbide forming elements such as manganese and chromium are present over 1% in the former and over 0.5% in the latter, the graphitization has been considerably suppressed. When the amount of nickel and copper increased, the carbide phase was more unstable than the common graphite steel. From mechanical properties of heat-treated alloy graphite steels it has been inferred that suitable additions of manganese and chromium are effective for improvement in wear resistance, and additions of nickel and copper improve ductility and machinability, respectively.
