Theoretical grounds and technology of an optimum microalloying of an electrosteel by nitrogen, titanium and aluminium

In the given paper physicochemical mechanism of macro- and microstructure formation in steels hardened by carbonitrides has been investigated. Effectiveness of structural steels microalloyed by Ti-Al-N has been showed. It has been showed that microalloying by Ti-Al-N leads to considerable grain refinement and mechanical properties increasing. Peculiarities of melting, casting and solidification processes at electrosmelting conditions have been analyzed. Production technique for structural steels microalloyed by Ti-Al-N with reduced metal withdrawal coefficient has been designed and approved at DSS plant conditions.