Premium
Phase Transformation Modelling and Parameter Identification from Dilatometric Investigations
Author(s) -
Suwanpinij Piyada,
Togobytska Nataliya,
Keul Christoph,
Weiss Wolf,
Prahl Ulrich,
Hömberg Dietmar,
Bleck Wolfgang
Publication year - 2008
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200806200
Subject(s) - transformation (genetics) , phase (matter) , yield (engineering) , materials science , kinetics , thermodynamics , identification (biology) , continuous cooling transformation , phase diagram , mechanics , metallurgy , chemistry , physics , microstructure , classical mechanics , bainite , biochemistry , botany , organic chemistry , biology , gene , austenite
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.