Study on rare earth compound modified bainite martensite steel

Study on  rare earth compound modified bainite martensite steel
Chemical composition (mass fraction,%): 0.50c, 0.80Si, 230Mn, 1.60Cr, 0.03S, 0.028P, 0 ~ 0.06RE B trace Fe margin. The rare earth compound modification processing. By rare earth compound modification treatment can refine microstructure and improve the structure of the martensite, promote the bainite can improve the strength and toughness of the steel. Rare earth compound modification treatment improved the morphology of inclusions in steel, size and distribution and improve the metallurgical quality