Počet záznamů: 1

Modelling of Diffusive and Massive Phase Transformations in Binary Systems – Thick Interface Parametric Model

  1. 1.
    0363702 - UFM-A 2012 RIV DE eng J - Článek v odborném periodiku
    Svoboda, Jiří - Gamsjäger, E.
    Modelling of Diffusive and Massive Phase Transformations in Binary Systems – Thick Interface Parametric Model.
    International Journal of Materials Research. Roč. 102, č. 6 (2011), s. 666-673 ISSN 1862-5282
    Grant CEP: GA MŠk(CZ) OC10029
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: modelling * phase transformation * ediffusion
    Kód oboru RIV: BJ - Termodynamika
    Impakt faktor: 0.830, rok: 2011

    During a solid/solid diffusive phase transformation from a parent -phase to a product -phase dissipative processes due to diffusion in the bulk phases as well as rearrangement of the crystal lattice and diffusion in the interfacial region occur. A model has been developed that accounts for all the above mentioned dissipative processes. By means of this thick interface model it is possible to assign a finite thickness and a finite mobility to the interface. The evolution of the mole fraction profiles of the components in the bulk phases and in the interface can be simulated from a given initial state until a steady state or equilibrium is attained. Based on this theoretical framework the kinetics of the  phase transformation in the Fe-rich Fe–Cr–Ni system is simulated. Starting from a certain initial composition the transformation kinetics exhibits the features of a massive or a bulk diffusion controlled transformation depending on temperature.
    Trvalý link: http://hdl.handle.net/11104/0199408