Abstract
For the purpose of containing austenitic cast iron with the minimum of alloying elements, effects of addition of alloying elements such as Si, Al, Ni, Cu, Mo, W, Cr, V were studied by observing the as-cast structure and measuring Ms temperature of Fe-C-Mn alloy cast iron. Si which is good for preventing the appearance of ledeburite during solidification varies Ms temperature, and consequently Si increment makes austenitization difficult. Aluminum, copper and nickel lower Ms temperature and good for getting austenitic cast iron. Molybdenum, tungsten, chromium and vanadium are carbide forming elements, therefore additions of these elements promote the appearance of ledeburite, Cr and V especially exhibit a powerful carbide stabilizing effect. These elements with the exception of Cr are very weak austenitizer, although they lower Ms temperature.
