WEAR-RESISTANT CAST IRON Russian patent published in 1998 - IPC

FIELD: metallurgy. SUBSTANCE: wear- resistant cast iron exploited under intensive shock and abrasive wear conditions contains carbon, chromium, manganese, silicon, copper, iron, and additionally calcium and cerium as alloying agents. Cast iron structure consists of special chromium carbides Cr₃C₂, Cr₇C₃, Cr₂₃C₆ and metastable austenite basis which, in the course of shock and abrasive wear in surface layer, converts into martensite to release special chromium carbides Cr₇C₃ and Cr₂₃C₆ which contribute to increased wear resistance. EFFECT: increased service life of parts. 1 tbl