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Diffusion simulations of MC and M7C3 carbide coarsening in bcc and fee matrix utilising new thermodynamic and kinetic description
Thermo-Calc Software AB.
Royal Institute of Technology.
RISE, Swerea, Swerea KIMAB.
2008 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847, Vol. 24, no 6, 695-704 p.Article in journal (Refereed)
Abstract [en]

A new thermodynamic database has been combined with an existing kinetic database to perform coarsening simulations in ternary systems including MC and M7C3 carbides in an fee matrix. The kinetic database was revised taking into consideration the new experimental information on the Fe-Cr-V-C system obtained in the present work, and available experiments on the ternary Fe-Cr-C and Fe-V-C systems. After revision the agreement between experimental results and simulations was satisfactory. It was found that the interfacial energy of M7C3 was twice as large as that of the MC carbide. The calculations for commercial steels with 6 alloy elements gave results in satisfactory agreement with new experimental measurements. The present coarsening simulations use the calculated equilibrium state and the observed particle sizes as the state for the start of the simulations. All the simulations were performed with the DICTRA software. © 2008 Institute of Materials, Minerals and Mining.

Place, publisher, year, edition, pages
2008. Vol. 24, no 6, 695-704 p.
Keyword [en]
Carbide coarsening, DICTRA, Diffusion simulations, Mobilities, Thermodynamic modelling
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12899DOI: 10.1179/174328407X240954Scopus ID: 2-s2.0-47549094691OAI: oai:DiVA.org:ri-12899DiVA: diva2:973092
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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