INFLUENCE OF INOCULANTS ON THE FEATURES OF WELD STRUCTURE FORMATION IN LOW-ALLOYED STEELS (REVIEW).

The paper presents a review of studies on the influence of inoculation of dispersed refractory compounds into the weld pool on formation of weld metal microstructure in low-alloyed high-strength steels. features of the process of primary structure formation are considered in the presence of refractory nonmetallic inclusions in the liquid metal, as well as on the interface of d-dendrites and γ-phase. Possibilities of inoculant influence on the temperature range of bainite transformations, formation of microstructural components with higher brittle fracture resistance, and improvement of weld metal toughness values are shown. [ABSTRACT FROM AUTHOR]