| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bernhard, Michael Christian
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024In situ study and assessment of the phosphorus-induced solute drag effect on the grain boundary mobility of austenitecitations
- 2024Experimental investigation and computational thermodynamics of the quaternary system Fe-C-Mn-S
- 2024On the Role of Tramp Elements for Surface Defect Formation in Continuous Casting of Steelcitations
- 2024The simple microsegregation model for steel considering MnS formation in the liquid and solid phasescitations
- 2024Critical Examination of the Representativeness of Austenite Grain Growth Studies Performed In Situ Using HT-LSCM and Application to Determine Growth-inhibiting Mechanismscitations
- 2023Grain boundary mobility of γ-Fe in high-purity iron during isothermal annealingcitations
- 2023Hot tear prediction in large sized high alloyed turbine steel parts - experimental based calibration of mechanical data and model validation
- 2023Thermodynamic modeling of the Fe-Sn system including an experimental re-assessment of the liquid miscibility gapcitations
- 2023Decomposition of γ-Fe in 0.4C-1.8Si-2.8Mn-0.5Al steel during a continuous cooling process: A comparative study using in-situ HT-LSCM, DSC and dilatometrycitations
- 2023Impurities and tramp elements in steel: Thermodynamic aspects and the application to solidification processes
- 2023Einfluss der Düsenparameter auf die Kühlbedingungen in der Sekundärkühlzone einer Brammengießanlagecitations
- 2022A Near-Process 2D Heat-Transfer Model for Continuous Slab Casting of Steelcitations
- 2022Selected metallurgical models for computationally efficient prediction of quality-related issues in continuous slab casting of steel
- 2022Experimental thermodynamics for improving CALPHAD optimizations at the Chair of Ferrous Metallurgy
- 2021Characterization of the gamma-loop in the Fe-P system by coupling DSC and HT-LSCM with complementary in-situ experimental techniquescitations
- 2021Investigations on hot tearing in a continuous slab caster: Numerical modelling combined with analysis of plant results
- 2020Experimental Study of High Temperature Phase Equilibria in the Iron-Rich Part of the Fe-P and Fe-C-P Systemscitations
- 2019High precious phase diagrams – a roadmap for a successful casting processing
Places of action
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document
Investigations on hot tearing in a continuous slab caster: Numerical modelling combined with analysis of plant results
Abstract
Hot tears (HT) and hot tear segregations (HTS) are common defects obtained in continuously cast steel. Their formation is closely related to microsegregation phenomena in combination with mechanical stresses exerted on the solidifying strand shell. In the vast majority of cases, the formation of HT/HTS in the casting process plays a minor role for an adequate product quality. However, it is well known that segregated hot tears most likely transform into undesirable hardening structures during subsequent rolling and heat treatment. The inhomogeneity on microscopic scale may seriously affect the performance of high-quality steel grades. In another scenario, internally located hot tears may propagate to the surface in the steel sheet forming process. Possible consequences are an increased scrap rate or the total failure of the component in the final application.<br/>For a selected steel grade, case studies are presented by numerically investigate HT/HTS formation in a continuous slab caster. Therefore, a strain-based hot tearing criterion developed at the Chair of Ferrous Metallurgy (Montanuniversitaet Leoben) was implemented in an in-house solidification model; the software tool was programmed in a joint project together with voestalpine Stahl Linz GmbH. Within the simulation trials the influence of (i) increased content of strongly segregating elements (P, S), (ii) changes in the secondary cooling strategy, (iii) different casting machine configuration and (iv) the maintenance conditions (roll misalignment) on the hot tear formation tendency was systematically analyzed. The calculations were compared with macro etching samples and critical conditions in the casting machine were identified. Finally, hot tear formation in the casting process could be prevented by adjusting the secondary cooling practice according to numerical findings.<br/>