Application of thermo-calc TCFE7 to high-alloyed mottled cast iron

Armin Paar*, Leonel Elizondo, Michael Brandner, Thomas Trickl, Bernhard Sonderegger, Coline Beal, Christof Sommitsch

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

The thermodynamic modeling of alloy systems consisting of stable and metastable phases e.g. high-alloyed mottled cast iron can be problematic. Thermodynamic databases are rather well-developed for low, medium and high alloyed steels (e.g. HSS) but the application of those databases is not yet very common for high-alloyed (mottled) cast irons. The Thermo-Calc software together with the TCFE7 database is used to calculate isopleth and property diagrams, using the CALPHAD method. Additionally Scheil-Gulliver calculations are performed to simulate the effects of microsegregation during solidification. The results from the thermodynamic calculations are compared with measurements on own samples and with literature values. Those measurements include quantitative light-optical analysis, SEM with BSE detector, EDX measurements for the distribution of the alloying elements as well as XRD and DSC measurements. The investigations show the possibilities which are offered by thermodynamic calculations for highalloyed mottled cast iron as well as the limitations and the compromises which have to be taken into account when calculating stable and metastable phases existing next to each other.

Originalspracheenglisch
Seiten (von - bis)1431-1436
Seitenumfang6
FachzeitschriftMaterials Science Forum
Jahrgang879
DOIs
PublikationsstatusVeröffentlicht - 2016
Veranstaltung9th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2016 - Stadthalle Graz, Graz, Österreich
Dauer: 29 Mai 20163 Juni 2016
https://www.tugraz.at/events/thermec-2016/home/

ASJC Scopus subject areas

  • Werkstoffwissenschaften (insg.)
  • Physik der kondensierten Materie
  • Werkstoffmechanik
  • Maschinenbau

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