BEHAVIOUR OF TRACE Mg IN HIGH SPEED STEEL M2
微量Mg在M2高速钢中的作用

An investigation was made of the eutectic microstructure during solidificationand the prespheroidization of eutectic carbide at elevated temperature of high speed steel M2inoculated with Mg. The traditional lamellar eutectic carbide M_2C in steel M2 may change in-to the fishbone eutectic carbide M_6C and block eutectic carbide MC if proper amount, saying0.012%, of Mg was added. The fishbone eutectic carbide prespheroidization may be retardedby Mg.