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

doi:10.4028/www.scientific.net/MSF.879.199

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

Institut für Werkstoffkunde, Fügetechnik und Umformtechnik (3030)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

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.

Originalsprache	englisch
Titel	Materials Science Forum
Herausgeber (Verlag)	Trans Tech Publications Ltd.
Seiten	199 - 204
Band	879
ISBN (Print)	978-303571129-5
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.879.199
Publikationsstatus	Veröffentlicht - 2016
Veranstaltung	9th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2016 - Stadthalle Graz, Graz, Österreich Dauer: 29 Mai 2016 → 3 Juni 2016 https://www.tugraz.at/events/thermec-2016/home/

Konferenz

Konferenz	9th International Conference on Processing and Manufacturing of Advanced Materials
Kurztitel	THERMEC’2016
Land/Gebiet	Österreich
Ort	Graz
Zeitraum	29/05/16 → 3/06/16
Internetadresse	https://www.tugraz.at/events/thermec-2016/home/

Schlagwörter

hot ductility, surface cracking, continuous casting, hot tensile testing, in-situ melting, microalloyed steel

Fields of Expertise

Advanced Materials Science

Zugriff auf Dokument

10.4028/www.scientific.net/MSF.879.199

Dieses zitieren

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. Bd. 879, Trans Tech Publications Ltd., S. 199 - 204, 9th International Conference on Processing and Manufacturing of Advanced Materials, Graz, Österreich, 29/05/16. https://doi.org/10.4028/www.scientific.net/MSF.879.199

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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.",

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AU - Six, Jakob

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AB - 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.

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