Evaluation of Austenite Reformation in Duplex Stainless Steel Weld Metal using Computational Thermodynamics
2014 (English)In: Welding in the World, ISSN 0043-2288, Vol. 58, no 2, 217-224 p.Article in journal (Refereed) Published
This paper provides a theoretical study of austenite reformation during cooling of duplex stainless weld metal using computational thermodynamics and kinetics. Model alloys of the superduplex 2509 weld metal and 2205 base material were used for the study and austenite reformation was calculated at equilibrium conditions and at cooling rates from 0.01 to 2,000 K/s. The calculations also provided the possibility to study the distribution of the alloying elements at ferrite and austenite phase boundaries. The importance of nitrogen for austenite reformation at rapid cooling was studied by comparing with simulations for a low-nitrogen alloy. The results were also compared with experimental and model results from the literature providing good correlation and the unique possibility to study the distribution of alloying elements between the growing austenite and the shrinking ferrite.
Place, publisher, year, edition, pages
2014. Vol. 58, no 2, 217-224 p.
Duplex stainless steel, Weld metal, Austenite, Mathematical models, Thermodynamics
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-121334DOI: 10.1007/s40194-013-0104-9ISI: 000331002600007ScopusID: 2-s2.0-84898992877OAI: oai:DiVA.org:kth-121334DiVA: diva2:618457
QC 20140128. Updated from submitted to published Epub ahead of print2013-04-282013-04-282014-03-13Bibliographically approved