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A Novel Approach for the Simulation of Surface Crack Formation in Continuous Casting

Ein neuer Ansatz für die Simulation der Oberflächenrissbildung beim Stranggießen

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Abstract

The present study describes the possibilities of new experimental and numerical methods to predict the crack susceptibility of steels under continuous casting (CC) conditions. The first method—the In-Situ Material Characterization by Bending (IMC-B) Experiment allows measuring the critical strain values for surface defects upon all the most important process and material parameters. The IMC-B experiment uses solidified samples obtained directly from the melt and is based on the 3-point bending test. Strains are calculated directly after the experiment has used a simulation in Abaqus. The risk of surface cracks is shown by using the new numerical tool, so-called defect indices implemented in IDS. In the framework of practical series, a crack susceptibility of the commercial Nb-microalloyed steel is investigated after the subsequent cooling to the test temperature. Samples cast at two different cooling conditions show another distribution of surface defects and critical strain value.

Zusammenfassung

Die vorliegende Publikation beschreibt neue Methoden der experimentellen und numerischen Prognose der Rissanfälligkeit von Stählen unter Stranggießbedingungen. Die erste Methode – In-Situ Material Characterization by Bending (IMC-B) – ermöglicht während des Biegeversuchs die Messung der kritischen Dehnungen zur Oberflächenrissbildung unter den wichtigsten Prozess- und Materialparametern. Der IMC-B Versuch basiert auf dem 3-Punkt Biegeversuch unter Verwendung einer direkt aus der Schmelze erstarrten Probe. Die Dehnungen werden direkt nach dem Experiment mit Hilfe von Abaqus berechnet. Die Gefahr der Rissbildung ist durch numerische Simulationen, mit sogenannten Defekt Indizes, dargestellt. Diese Defekt Indizes sind in IDS implementiert. Im Rahmen der Versuchsserie wird die Rissanfälligkeit eines Nb-mikrolegierten Stahls nach der anschließenden Abkühlung bis auf Raumtemperatur untersucht. Die bei zwei unterschiedlichen Abkühlbedingungen gegossenen Proben zeigen eine andere Verteilung der Oberflächenrisse sowie unterschiedliche kritische Dehnungswerte.

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References

  1. Xie, S. S.; Lee, J. D.; Yoon, U.–S.; Yim, C. H.: Compression test to reveal surface crack sensitivity between 700 and 1100 °C of Nb-bearing and high Ni continuous casting slabs, ISIJ International, 42 (2002), no. 7, pp 708–716

  2. Yasunaka, H.; Narita, K.; Mori, T.; Fujimoto, T.: On the surface cracks caused by the bending test of small ingot, ISIJ Meeting, 101 (1981), pp 136

    Google Scholar 

  3. Yasumoto, K.; Maehara, Y.; Nagamichi, T.; Tomono, H.: Effect of thermal-mechanical history on surface cracking of as cast low carbon low alloy steel slabs, ISIJ International, 29 (1989), no. 11, pp 933–939

  4. Crowther, D. N.; Green, M. J. W.; Mitchell, P. S.: The influence of composition on the hot cracking susceptibility during casing of microalloyed steels processed to simulate thin slab casting conditions, Materials Science Forum, 284–286 (1998), pp 469–476

    Article  Google Scholar 

  5. Mintz, B.; Yue, S.; Jonas, J. J.: Hot ductility of steels and its relationship to the problem of transverse cracking during continuous casting, International Materials Reviews, 36 (1991), no. 5, pp 187–217

  6. Bernhard, C.; Krajewski, P.; Schaden, T.; Ilie, S.: Fachausschuss für physikalische Chemie und metallurgische Verfahrensentwicklung des VDEh, Präsentation, Düsseldorf, 28.03.2014.

  7. Louhenkilpi, S.; Miettinen, J.: Project Report SolCrack II, February 2014, Linz

  8. Andersen, I.; Grong, O.: Analytical modeling of grain growth in metals and alloys in the presence of growing and dissolving precipitates—I. Normal grain growth, Acta metal, Mater, 43 (1995), no. 7, pp 2673–2688

  9. Bernhard, C.; Reiter, J.; Presslinger, H.: A model for predicting the austenite grain size at the surface of continuously-cast slabs, Metallurgy and Materials Transactions, 39B (2008), pp 885–895

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Authors and Affiliations

  1. Chair of Ferrous Metallurgy, Montanuniversität Leoben, Franz-Josef-Straße 18, 8700, Leoben, Austria

    Pawel Krajewski, Roman Krobath & Christian Bernhard

  2. Aalto University, Espoo, Finland

    Jyrki Miettinen & Seppo Louhenkilpi

  3. voestalpine Stahl GmbH, Linz, Austria

    Sergiu Ilie

  4. Siemens VAI Metals Technologies GmbH, Linz, Austria

    Thomas Schaden

Authors
  1. Pawel Krajewski
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  2. Roman Krobath
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  3. Christian Bernhard
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  4. Jyrki Miettinen
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  5. Seppo Louhenkilpi
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  6. Sergiu Ilie
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  7. Thomas Schaden
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Correspondence to Pawel Krajewski.

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Krajewski, P., Krobath, R., Bernhard, C. et al. A Novel Approach for the Simulation of Surface Crack Formation in Continuous Casting. Berg Huettenmaenn Monatsh 160, 109–116 (2015). https://doi.org/10.1007/s00501-014-0308-3

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  • DOI: https://doi.org/10.1007/s00501-014-0308-3

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