Creep simulation of 9-12% Cr steels using the composite model with thermodynamically calculated input
2005 (English)In: Materials Science & Engineering: A, ISSN 0921-5093, Vol. 395, no 1-2, 110-115 p.Article in journal (Refereed) Published
Creep of 9-12% Cr steels is modeled using the composite model, developed by Blum et al. [R. Sedlacek, W. Blum, Comput. Mater. Sci. 25 (2002) 200], and thermodynamic calculations based on the Calphad approach. The composite model yields a physical description of the deformation behavior of materials that have a pronounced heterogeneous dislocation structure and is briefly surveyed. A few of the input parameters have been thermodynamically calculated using Thermo-Calc and introduced to the main program via a programming interface. This combined approach allows us to simulate the creep deformation behavior with less extensive microstructural investigations. This is a step towards enabling predictions of the creep behavior predominantly based on the nominal composition, heat treatment and mechanical load. Simulation results for two different 9-12% Cr steels are presented.
Place, publisher, year, edition, pages
2005. Vol. 395, no 1-2, 110-115 p.
chromium steels, creep, modeling, dislocation structure, subgrain boundaries, particle hardening
IdentifiersURN: urn:nbn:se:kth:diva-37747DOI: 10.1016/j.msea.2004.12.004ISI: 000228069100014ScopusID: 2-s2.0-14744287691OAI: oai:DiVA.org:kth-37747DiVA: diva2:435069