Thermodynamic calculation and kinetic simulation related to solidification process
2006 (English)In: Modeling of Casting, Welding and Advanced Solidification Processes - XI, 2006, 529-536 p.Conference paper (Refereed)
This paper presents a brief review and some new results of the thermodynamic calculation and kinetic simulation related to the micro-modelling of solidification processes by using ThermoCalc and DICTRA. Emphasis is given on a partial-equilibrium approach developed as a modification of the Scheil-Gulliver non-equilibrium approximation to treat effectively the back diffusion of fast diffusing elements in solid phases. We start with a DICTRA simulation and successfully explain why the P peak drifts away from those of Mn and Si in the experimentally observed composition profiles of a carbon steel. Then, for this steel and other 16 carbon and low alloy steels, we perform both non-equilibrium and partial-equilibrium solidification calculations and demonstrate the significant improvement of the partial-equilibrium approach by comparing the freezing range results with those from either DICTRA simulations or experimental observations.
Place, publisher, year, edition, pages
2006. 529-536 p.
, Modeling of Casting, Welding and Advanced Solidification Processes - XI, 1
Back diffusion, DICTRA, Scheil-Gulliver, Solidification, Thermo-Calc, Computer simulation, Kinetic theory, Mathematical models, Phase equilibria, Thermal diffusion, Thermodynamics, Partial equilibrium solidification, Scheil Gulliver, Thermo Calc
Other Materials Engineering
IdentifiersURN: urn:nbn:se:kth:diva-155835ScopusID: 2-s2.0-33845227196ISBN: 0873396294ISBN: 9780873396295OAI: oai:DiVA.org:kth-155835DiVA: diva2:769841
Modeling of Casting, Welding and Advanced Solidification Processes - XI, 28 May 2006 through 2 June 2006, Opio
QC 201412092014-12-092014-11-132014-12-09Bibliographically approved