MICROSTRUCTURAL CHARACTERISATION OF 1.2080 STEEL MODIFIED WITH NANO-DISPERSED Si 3 N 4 PARTICLES AFTER VARIOUS HEAT TREATMENTS

B Yordanov, B Yordanov
2012 Journal of the University of Chemical Technology and Metallurgy   unpublished
Results from a metallographic study of the microstructure of 1.2080 tool steel with and without modifying additions of silicon nitride (Si 3 N 4), after various applied heat treatments are obtained. Distribution of the phases (ledebur eutectic, alloyed martensite, retained austenite and dispersed carbides) and hardness in samples from 1.2080 steel after applied 35% plastic deformation and modifying with silicon nitride have been observed.
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