Influence of Thermal History on the Hot Ductility of a Continuously Cast Low Alloyed Cr-Mo Steel

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Abstract

The hot ductility of a low alloyed Cr-Mo steel has been investigated to evaluate the surface cracking sensitivity within the straightening or unbending regime during the continuous casting process. Tensile samples were subjected to various thermal treatments, including melting and solidification, and were tested at deforming temperatures ranging between 600 and 1100 °C using a strain rate of 10−3 s−1. Hot ductility was evaluated based on reduction in area measurement and metallographic investigations. The investigated steel exhibits a drop in ductility at around 800 °C due to intergranular cracking. Microstructural examinations and supplementary thermokinetic computer simulations were carried out to describe the evolution of the microstructure during solidification and cooling.
Original languageEnglish
Number of pages6
JournalJournal of Materials Engineering and Performance
DOIs
Publication statusE-pub ahead of print - 29 Aug 2018

Fingerprint

Steel
Ductility
Solidification
Straightening
Continuous casting
Strain rate
Melting
Heat treatment
Cooling
Microstructure
Computer simulation
Hot Temperature
Temperature

Keywords

  • casting and solidification
  • microscopy
  • optical metallography
  • segregation
  • steel

ASJC Scopus subject areas

  • Metals and Alloys

Fields of Expertise

  • Advanced Materials Science

Cite this

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title = "Influence of Thermal History on the Hot Ductility of a Continuously Cast Low Alloyed Cr-Mo Steel",
abstract = "The hot ductility of a low alloyed Cr-Mo steel has been investigated to evaluate the surface cracking sensitivity within the straightening or unbending regime during the continuous casting process. Tensile samples were subjected to various thermal treatments, including melting and solidification, and were tested at deforming temperatures ranging between 600 and 1100 °C using a strain rate of 10−3 s−1. Hot ductility was evaluated based on reduction in area measurement and metallographic investigations. The investigated steel exhibits a drop in ductility at around 800 °C due to intergranular cracking. Microstructural examinations and supplementary thermokinetic computer simulations were carried out to describe the evolution of the microstructure during solidification and cooling.",
keywords = "Stranggie{\ss}en, Stahl, Mikroskopie, Seigerung, casting and solidification, microscopy, optical metallography, segregation, steel",
author = "Christian Hoflehner and Christoph Sommitsch and Coline Beal and Jakob Six and Sergiu Ilie",
year = "2018",
month = "8",
day = "29",
doi = "10.1007/s11665-018-3599-9",
language = "English",
journal = "Journal of Materials Engineering and Performance",
issn = "1059-9495",
publisher = "Springer",

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TY - JOUR

T1 - Influence of Thermal History on the Hot Ductility of a Continuously Cast Low Alloyed Cr-Mo Steel

AU - Hoflehner, Christian

AU - Sommitsch, Christoph

AU - Beal, Coline

AU - Six, Jakob

AU - Ilie, Sergiu

PY - 2018/8/29

Y1 - 2018/8/29

N2 - The hot ductility of a low alloyed Cr-Mo steel has been investigated to evaluate the surface cracking sensitivity within the straightening or unbending regime during the continuous casting process. Tensile samples were subjected to various thermal treatments, including melting and solidification, and were tested at deforming temperatures ranging between 600 and 1100 °C using a strain rate of 10−3 s−1. Hot ductility was evaluated based on reduction in area measurement and metallographic investigations. The investigated steel exhibits a drop in ductility at around 800 °C due to intergranular cracking. Microstructural examinations and supplementary thermokinetic computer simulations were carried out to describe the evolution of the microstructure during solidification and cooling.

AB - The hot ductility of a low alloyed Cr-Mo steel has been investigated to evaluate the surface cracking sensitivity within the straightening or unbending regime during the continuous casting process. Tensile samples were subjected to various thermal treatments, including melting and solidification, and were tested at deforming temperatures ranging between 600 and 1100 °C using a strain rate of 10−3 s−1. Hot ductility was evaluated based on reduction in area measurement and metallographic investigations. The investigated steel exhibits a drop in ductility at around 800 °C due to intergranular cracking. Microstructural examinations and supplementary thermokinetic computer simulations were carried out to describe the evolution of the microstructure during solidification and cooling.

KW - Stranggießen

KW - Stahl

KW - Mikroskopie

KW - Seigerung

KW - casting and solidification

KW - microscopy

KW - optical metallography

KW - segregation

KW - steel

U2 - 10.1007/s11665-018-3599-9

DO - 10.1007/s11665-018-3599-9

M3 - Article

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

SN - 1059-9495

ER -