Influence of Thermal History on the Hot Ductility of Ti-Nb Microalloyed Steels

Coline Beal, Ozan Caliskanoglu, Christof Sommitsch, Sergiu Ilie, Jakob Six, Mária Dománková

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review


The hot ductility of Ti-Nb microalloyed steel has been investigated to evaluate the sensitivity to surface crack formation during the continuous casting process. Tensile samples were subjected to different thermal treatments and were tested at deformation temperatures ranging from 650°C to 1000°C using a strain rate of 10-3s-1. It has been found, that the investigated steel evinced poor ductility over almost the whole testing temperature range characterized by marked grain boundary cracking, irrespective of which thermal cycle has been utilized or whether the samples have been melted or only reheated. Microstructural examinations and supplementary thermo-kinetic computer simulations revealed distinct Ti-Nb precipitation throughout the microstructure being responsible for the deteriorated materials hot ductility.
Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publications Ltd.
Pages199 - 204
ISBN (Print)978-303571129-5
Publication statusPublished - 2016
EventTHERMEC - Stadthalle Graz, Graz, Austria
Duration: 29 May 20163 Jun 2016


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    Fields of Expertise

    • Advanced Materials Science

    Cite this

    Beal, C., Caliskanoglu, O., Sommitsch, C., Ilie, S., Six, J., & Dománková, M. (2016). Influence of Thermal History on the Hot Ductility of Ti-Nb Microalloyed Steels. In Materials Science Forum (Vol. 879, pp. 199 - 204). Trans Tech Publications Ltd..