TUNGSTEN CARBIDE LASER ALLOYING OF A LOW-ALLOYED STEEL

Laser alloying is a way to change the composition of metal surfaces in order to improve their corrosion-resistance high-temperature strength and hardness, The results of a structural and phase analysis of a tun gsten carbide based surface layer prepared by laser alloying of a low carbon steel substrate are presented. Structure, phase composition and microhardness of surface alloyed layers have been investigated. The s urface of the samples exhibited a thin layer with a different chemical and phase composition. An increase in alloyed surface hardness and we ar-resistant was observed.