WIAS Preprint No. 1306, (2008)

Phase transformation modeling and parameter identification from dilatometric investigations


  • Suwanpinij, Piyada
  • Togobytska, Nataliya
  • Keul, Christoph
  • Weiss, Wolf
  • Prahl, Ulrich
  • Hömberg, Dietmar
    ORCID: 0000-0001-9460-5729
  • Bleck, Wolfgang

2010 Mathematics Subject Classification

  • 74N15 35K05 35R30 35B30 35K20


  • Phase transformation modeling, dilatometry, parameter identification




The goal of this paper is to propose a new approach towards the evaluation of dilatometric results, which are often employed to analyse the phase transformation kinetics in steel, especially in terms of continuous cooling transformation (CCT) diagram. A simple task of dilatometry is deriving the start and end temperatures of the phase transformation. It can yield phase transformation kinetics provided that plenty metallographic investigations are performed, whose analysis is complicated especially in case of several coexisting product phases. The new method is based on the numerical solution of a thermomechanical identification problem. It is expected that the phase transformation kinetics can be derived by this approach with less metallographic tasks. The first results are remarkably promising although further investigations are required for the numerical simulations.

Appeared in

  • Steel Res. Int., 79 (2008), pp. 793-799

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