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

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

Research output: Contribution to journalArticle

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

Keywords

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

ASJC Scopus subject areas

  • Metals and Alloys

Fields of Expertise

  • Advanced Materials Science

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