The Role of Grain Boundary Oxidation on Surface Crack Formation under Continuous Casting Conditions

Titel in Übersetzung: Die Rolle von Korngrenzenoxidation auf die Oberflächenrissbildung unter Stranggießbedingungen

Roman Krobath, Christian Bernhard, Sergiu Ilie, Jakob Six, Susanne Hahn, Paul Pennerstorfer

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung


This paper represents an extended abstract of a study presented at the ESTAD 2019 conference. In this contribution, the influence of different cooling strategies on the formation of intergranular surface cracks is observed with in-situ bending experiments under continuous casting conditions. The steel composition is equal to a 0.17 wt.% C construction steel. It is investigated with and without Al deoxidation at bending temperatures of 1100 °C to 700 °C. The results show the most critical situation prevailed for each testing condition at 900 °C. A holding temperature of 1200 °C leads to a selective grain boundary oxidation and therefore to the formation of notches at the austenite grain boundaries, which are the cause for stress concentrations and easier formation of cracks during a subsequent tensile deformation at critical temperatures. The experiments reveal a partially stronger influence of this phenomenon on the steel without Al deoxidation.
Titel in ÜbersetzungDie Rolle von Korngrenzenoxidation auf die Oberflächenrissbildung unter Stranggießbedingungen
Seiten (von - bis)461-465
FachzeitschriftBerg- und hüttenmännische Monatshefte : BHM
PublikationsstatusVeröffentlicht - 2 Okt. 2019

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