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

Research output: Contribution to journalArticleResearchpeer-review

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.

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Cast iron
casts
Thermodynamics
iron
thermodynamics
Metastable phases
Steel
Alloying elements
solidification
alloying
Solidification
Energy dispersive spectroscopy
diagrams
steels
Detectors
computer programs
Scanning electron microscopy
scanning electron microscopy
detectors

Keywords

  • Mottled cast iron
  • TCFE7
  • Thermo-Calc
  • Thermodynamic modeling

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Application of thermo-calc TCFE7 to high-alloyed mottled cast iron. / Paar, Armin; Elizondo, Leonel; Brandner, Michael; Trickl, Thomas; Sonderegger, Bernhard; Beal, Coline; Sommitsch, Christof.

In: Materials Science Forum, Vol. 879, 2017, p. 1431-1436.

Research output: Contribution to journalArticleResearchpeer-review

Paar, Armin ; Elizondo, Leonel ; Brandner, Michael ; Trickl, Thomas ; Sonderegger, Bernhard ; Beal, Coline ; Sommitsch, Christof. / Application of thermo-calc TCFE7 to high-alloyed mottled cast iron. In: Materials Science Forum. 2017 ; Vol. 879. pp. 1431-1436
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