Prediction and validation of hot tearing in permanent mold steel casting using a viscoplastic damage model
S. Hadžić1
, E. Schmidtne Kelity2, C. Sommitsch1
1Graz University of Technology Institute for Materials Science and Welding, Christian Doppler Laboratory for Materials Modeling and Simulation, Kopernikusgasse 24/I, 8010 Graz, Austria.
2Voestalpine Gießerei Linz GmbH, voestapline – Straße 3, 4020 Linz, Austria.
DOI:
https://doi.org/10.7494/cmms.2013.1.0408
Abstract:
Hot tears are unacceptable defects, which can be found in final steel casting products. It is believed that a hot tear forms at the mushy zone with a high fraction of solid due to an applied tensile strain. In this work the simulation of the solidification and deformation processes are carried out using commercial software combined with a user-defined constitutive model. The shrinkage porosity information is coupled to the constitutive deformation model in the solid state to calculate the materials damage, where a viscoplastic model can predict the hot tear formation in permanent mold steel alloy casting. A good correlation between experimental findings and predicted damage is observed.
Cite as:
Hadžić, S., Kelity, E., & Sommitsch, C. (2013). Prediction and validation of hot tearing in permanent mold steel casting using a viscoplastic damage model. Computer Methods in Materials Science, 13(1), 36 – 42. https://doi.org/10.7494/cmms.2013.1.0408
Article (PDF):
Keywords:
Hot tear, Casting, Steel alloy, Viscoplastic, Damage, Solidification
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