HOT DUCTILITY BEHAVIOR OF A CONTINUOUSLY CAST Ti-Nb MICROALLOYED STEEL

Christian Hoflehner; Coline Beal; Christof Sommitsch; Jakob Six; Sergiu Ilie

HOT DUCTILITY BEHAVIOR OF A CONTINUOUSLY CAST Ti-Nb MICROALLOYED STEEL

Christian Hoflehner, Coline Beal, Christof Sommitsch, Jakob Six, Sergiu Ilie

Institute of Materials Science, Joining and Forming (3030)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

The hot ductility behaviour of a Ti-Nb micro alloyed steel was investigated to evaluate the probability of surface
crack formation during the continuous casting process, by performing hot tensile tests. The testing
temperatures are ranging from 1100 °C to 700 °C. The effects of testing temperature range and deformation
rate on hot ductility were investigated. The results show that this steel exhibits poor ductility over almost the
whole testing temperature range. The ductility starts to decrease at 1000 °C in the single phase γ-region,
characterized by grain boundary sliding and surface cracks, reaches a minimum in the two-phase α-γ-region
at 750 °C and slightly increases with decreasing testing temperature. Furthermore, low deformation rates
severely decrease the ductility behaviour. 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 language	English
Title of host publication	METAL 2019
Subtitle of host publication	28th International Conference on Metallurgy and Materials ; proceedings
Place of Publication	Ostrava
Publisher	TANGER Ltd., Ostrava
Pages	84 - 89
Number of pages	6
ISBN (Electronic)	978-80-87294-92-5
Publication status	Published - 15 Nov 2019
Event	METAL 2019: 28th International Conference on Metallurgy and Materials - Brno, Czech Republic Duration: 22 May 2019 → 24 May 2019

Conference

Conference	METAL 2019
Country/Territory	Czech Republic
City	Brno
Period	22/05/19 → 24/05/19

Keywords

Metallurgy
Steel
Continuous Casting
Hot Ductility
Low Alloyed
Testing Methodes

Fields of Expertise

Advanced Materials Science

K1-MET Area 3.2 - Physical and numerical simulation of continuous casting and linked castingrolling processes (K1-MET: Competence Center for Excellent Technologies in Advanced Metallurgical and Environmental Process Development)
Sommitsch, C.
1/07/15 → 18/11/19
Project: Research project

Cite this

@inproceedings{ac761640fc3a4bcca33d9387dd5e081d,

title = "HOT DUCTILITY BEHAVIOR OF A CONTINUOUSLY CAST Ti-Nb MICROALLOYED STEEL",

abstract = "The hot ductility behaviour of a Ti-Nb micro alloyed steel was investigated to evaluate the probability of surfacecrack formation during the continuous casting process, by performing hot tensile tests. The testingtemperatures are ranging from 1100 °C to 700 °C. The effects of testing temperature range and deformationrate on hot ductility were investigated. The results show that this steel exhibits poor ductility over almost thewhole testing temperature range. The ductility starts to decrease at 1000 °C in the single phase γ-region,characterized by grain boundary sliding and surface cracks, reaches a minimum in the two-phase α-γ-regionat 750 °C and slightly increases with decreasing testing temperature. Furthermore, low deformation ratesseverely decrease the ductility behaviour. Microstructural examinations and supplementary thermo-kineticcomputer simulations revealed distinct Ti-Nb precipitation throughout the microstructure being responsible forthe deteriorated materials hot ductility.",

keywords = "Metallurgy, Steel, Continuous Casting, Hot Ductility, Low Alloyed, Testing Methodes",

author = "Christian Hoflehner and Coline Beal and Christof Sommitsch and Jakob Six and Sergiu Ilie",

year = "2019",

month = nov,

day = "15",

language = "English",

pages = "84 -- 89",

booktitle = "METAL 2019",

publisher = "TANGER Ltd., Ostrava",

note = "METAL 2019 : 28th International Conference on Metallurgy and Materials ; Conference date: 22-05-2019 Through 24-05-2019",

}

TY - GEN

T1 - HOT DUCTILITY BEHAVIOR OF A CONTINUOUSLY CAST Ti-Nb MICROALLOYED STEEL

AU - Hoflehner, Christian

AU - Beal, Coline

AU - Sommitsch, Christof

AU - Six, Jakob

AU - Ilie, Sergiu

PY - 2019/11/15

Y1 - 2019/11/15

N2 - The hot ductility behaviour of a Ti-Nb micro alloyed steel was investigated to evaluate the probability of surfacecrack formation during the continuous casting process, by performing hot tensile tests. The testingtemperatures are ranging from 1100 °C to 700 °C. The effects of testing temperature range and deformationrate on hot ductility were investigated. The results show that this steel exhibits poor ductility over almost thewhole testing temperature range. The ductility starts to decrease at 1000 °C in the single phase γ-region,characterized by grain boundary sliding and surface cracks, reaches a minimum in the two-phase α-γ-regionat 750 °C and slightly increases with decreasing testing temperature. Furthermore, low deformation ratesseverely decrease the ductility behaviour. Microstructural examinations and supplementary thermo-kineticcomputer simulations revealed distinct Ti-Nb precipitation throughout the microstructure being responsible forthe deteriorated materials hot ductility.

AB - The hot ductility behaviour of a Ti-Nb micro alloyed steel was investigated to evaluate the probability of surfacecrack formation during the continuous casting process, by performing hot tensile tests. The testingtemperatures are ranging from 1100 °C to 700 °C. The effects of testing temperature range and deformationrate on hot ductility were investigated. The results show that this steel exhibits poor ductility over almost thewhole testing temperature range. The ductility starts to decrease at 1000 °C in the single phase γ-region,characterized by grain boundary sliding and surface cracks, reaches a minimum in the two-phase α-γ-regionat 750 °C and slightly increases with decreasing testing temperature. Furthermore, low deformation ratesseverely decrease the ductility behaviour. Microstructural examinations and supplementary thermo-kineticcomputer simulations revealed distinct Ti-Nb precipitation throughout the microstructure being responsible forthe deteriorated materials hot ductility.

KW - Metallurgy

KW - Steel

KW - Continuous Casting

KW - Hot Ductility

KW - Low Alloyed

KW - Testing Methodes

M3 - Conference paper

SP - 84

EP - 89

BT - METAL 2019

PB - TANGER Ltd., Ostrava

CY - Ostrava

T2 - METAL 2019

Y2 - 22 May 2019 through 24 May 2019

ER -

HOT DUCTILITY BEHAVIOR OF A CONTINUOUSLY CAST Ti-Nb MICROALLOYED STEEL

Abstract

Conference

Keywords

Fields of Expertise

Fingerprint

Projects

K1-MET Area 3.2 - Physical and numerical simulation of continuous casting and linked castingrolling processes (K1-MET: Competence Center for Excellent Technologies in Advanced Metallurgical and Environmental Process Development)

Cite this