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 contribution

Abstract

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
Volume879
ISBN (Print)978-303571129-5
DOIs
Publication statusPublished - 2016
Event9th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2016 - Stadthalle Graz, Graz, Austria
Duration: 29 May 20163 Jun 2016
https://www.tugraz.at/events/thermec-2016/home/

Conference

Conference9th International Conference on Processing and Manufacturing of Advanced Materials
Abbreviated titleTHERMEC 2016
CountryAustria
CityGraz
Period29/05/163/06/16
Internet address

Fields of Expertise

  • Advanced Materials Science

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