• TRANSFORMATION OF HETEROPHASE NON-METALLIC INCLUSIONS “PHASES ARE BESIDE” IN STEELS UNDER LASER ACTION

    Materials Science. Non-Equilibrium Phase Transformations., Vol. 4 (2018), Issue 1, pg(s) 7-11

    Melting and crystallization of heterophase non-metallic inclusions “phases are beside” was investigated. It was shown that under laser action the initial structure of inclusion-steel matrix boundaries transits into unstable equilibrium high-energy condition that cause development of the dissipation processes connecting with aspiration of system inclusion-matrix to the state with minimum of the free energy. In the result of the system heterophase 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 non-metallic inclusions “phases are beside” and also of the melting of steel matrix play the great role in transformation of interphase inclusion-matrix boundaries under laser action.

  • MATERIALS

    TRANSFORMATION OF HETEROPHASE NON-METALLIC INCLUSIONS “HIGHMELTING PHASE SURROUNDING WITH LOW-MELTING COVER” IN STEELS UNDER LASER ACTION

    Machines. Technologies. Materials., Vol. 11 (2017), Issue 6, pg(s) 315-319

    Melting and crystallization of heterophase non-metallic inclusions “high-melting phase surrounding with low-melting cover” was investigated. It was shown that under laser action the initial structure of inclusion-steel matrix boundaries transits into unstable equilibrium high-energy condition that cause development of the dissipation processes connecting with aspiration of system inclusionmatrix to the state with minimum of free energy. In the result of the system heterophase 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 non-metallic inclusions “high-melting phase surrounding with low-melting cover” and also of the melting of steel matrix play the great role in transformation of interphase inclusion-matrix boundaries under laser action.

  • MATERIALS

    TRANSFORMATION OF EUTECTIC NON-METALLIC INCLUSIONS IN STEELS UNDER LASER ACTION

    Machines. Technologies. Materials., Vol. 10 (2016), Issue 11, pg(s) 60-62

    Melting and crystallization of eutectic non-metallic inclusions was investigated. It was shown that under laser action the initial structure of eutectic inclusion-steel matrix boundaries transits into unstable equilibrium high-energy condition that cause development of the dissipation processes connecting with aspiration of system inclusion-matrix to the state with minimum of free energy. 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.

  • TRANSFORMATION OF HETEROPHASE NON-METALLIC INCLUSIONS “HIGHMELTING PHASE SURROUNDING WITH LOW-MELTING COVER” IN STEELS UNDER LASER ACTION

    Materials Science. Non-Equilibrium Phase Transformations., Vol. 3 (2017), Issue 4, pg(s) 121-125

    Melting and crystallization of heterophase non-metallic inclusions “high-melting phase surrounding with low-melting cover” was investigated. It was shown that under laser action the initial structure of inclusion-steel matrix boundaries transits into unstable equilibrium high-energy condition that cause development of the dissipation processes connecting with aspiration of system inclusionmatrix to the state with minimum of free energy. In the result of the system heterophase 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 non-metallic inclusions “high-melting phase surrounding with low-melting cover” and also of the melting of steel matrix play the great role in transformation of interphase inclusion-matrix boundaries under laser action.

  • TRANSFORMATION OF HETEROPHASE NON-METALLIC INCLUSIONS “HIGHMELTING PHASE SURROUNDING WITH LOW-MELTING COVER” IN STEELS UNDER LASER ACTION

    Materials Science. Non-Equilibrium Phase Transformations., Vol. 3 (2017), Issue 3, pg(s) 82-86

    Melting and crystallization of heterophase non-metallic inclusions “high-melting phase surrounding with low-melting cover” was investigated. It was shown that under laser action the initial structure of inclusion-steel matrix boundaries transits into unstable equilibrium high-energy condition that cause development of the dissipation processes connecting with aspiration of system inclusionmatrix to the state with minimum of free energy. In the result of the system heterophase 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 non-metallic inclusions “high-melting phase surrounding with low-melting cover” and also of the melting of steel matrix play the great role in transformation of interphase inclusion-matrix boundaries under laser action.

  • INFLUENCE OF NON-METALLIC INCLUSIONS ON THE STRENGTHENING OF STEELS UNDER LASER ACTION

    Materials Science. Non-Equilibrium Phase Transformations., Vol. 1 (2015), Issue 3, pg(s) 18-24

    Melting and crystallization of non-metallic inclusions in contact with steel matrix during laser treatment was investigated. It was shown that laser action is the method of local change of inclusion structure in the surface fused layers and also of the properties of non-metallic inclusion surface. Peculiarities of steel matrix saturation with elements of non-metallic inclusions during different regimes of laser action were investigated. It was shown the role of that process in the formation of local structure of steel matrix near non-metallic inclusions. That allows to realize possibility of transformation of the non-metallic inclusions how sources of inside local alloying of steel matrix. It was fixed that in local areas of steel matrix the liquation strengthened zones were formed. They represent different types of composite layers: gradiental zones with cascade and “spot” distribution of elements and nanohardness, dispersal zones with different types of microphases and nanophases, “tunnel” zones, and also zones with combine structure. It was shown the role of non-metallic inclusions in development of micro heterogeneous strengthening of steels under laser treatment.