engleski

Phase and structural changes in the eutectic inclusions in steels under laser action

In the result of the system eutectic inclusion-matrix transits to the state of unstable equilibrium which determines structure and properties of laser-quenched interphase boundary. Processes of melting, fusion and dissolution of eutectic non-metallic inclusions and also of the melting of steel matrix play the great role in transformation of inclusion-matrix boundaries under laser action. In the result of high-speed melting of inclusions “eutectics” heavy oversaturated liquid solution or two liquid solutions on the base of inclusion and steel matrix differing by concentration heterogeneity are formed. In such liquid systems nonbalanced mass transfer is happened that suppresses of cooperative growth of phases and formation of cooperative structures of non-metallic inclusion.

eutectic inclusions ; steel ; laser ; melting ; fusion ; dissolution

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