Conveners
Simulation and modelling: Simulation and modelling I
- Gerald Wimmer (Primetals Technologies)
Simulation and modelling: Simulation and modelling II
- Mirko Javurek (Johannes Kepler Universität Linz, Institut für Strömungslehre und Wärmeüübertragung)
- Erwin Povoden-Karadeniz
Simulation and modelling: Simulation and modelling III
- Mirko Javurek (Johannes Kepler Universität Linz, Institut für Strömungslehre und Wärmeüübertragung)
- Erwin Povoden-Karadeniz (TU Wien)
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Bernhard Voraberger (Primetals Technologies)01/10/2019, 09:00Simulation and modellingOral PresentationNumerical simulations like CFD and FEM have constantly evolved in the last decades and nowadays play an important role in the design and development of modern steelmaking converters. Although the flow inside the converter is highly complex and comprises a whole lot of physical phenomena like chemical reactions, heat transfer and the flow of gas bubbles in the liquid melt, it’s possible to...Go to contribution page
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Aurélie Jacob (TU Wien)01/10/2019, 09:20Simulation and modellingOral PresentationThe formation of σ phase in various technological steel grades is crucial for materials properties due to embrittlement caused by the precipitation of σ phase at the grain boundaries. Thus, understanding and prediction of its temperature and composition dependent stability is required, which can be obtained by thermodynamic modeling. Its phase description should represent the correct crystal...Go to contribution page
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Erwin Povoden-Karadeniz (CDL-IPE TU Wien)01/10/2019, 09:40Simulation and modellingOral PresentationWe propose a new thermodynamic model description of carbonitride Cr3Ni2Si(N,C) “eta-phase” with M6C-type structure. Diamond-structured face-centered cubic Cr-Ni-Si Carbonitride eta-phase precipitates have been reported in some Si-containing 20-25 austenitic stainless steel grades [1] and irradiated type 316 [2]. This phase...Go to contribution page
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Mirko Javurek (Johannes Kepler Universität Linz, Institut für Strömungslehre und Wärmeüübertragung)01/10/2019, 10:00Simulation and modellingOral PresentationElectromagnetic stirring in the bending zone of a continuous casting machine is known to increase the amount of equiaxed crystals. A simulation model for the liquid steel flow and temperature under the influence of an electromagnetic stirrer has been developed in order to optimise the design of such a stirrer. The turbulent flow of the liquid steel inside the strand as well as the magnetic...Go to contribution page
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RODRIGO MAGNABOSCO (FEI University)01/10/2019, 10:50Simulation and modellingOral PresentationIn duplex stainless steels (DSS) the desired microstructure after solution heat treatment is a ferritic matrix with austenite islands, maintaining approximately equal amounts of both phases. However, during several manufacturing processes, such as welding, the formation of deleterious phases could happen, and the one of greater influence is the sigma phase, resulting in loss of corrosion...Go to contribution page
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31. LOW TEMPERATURE SURFACE HARDENING OF STAINLESS STEEL; PREDICTING COMPOSITION AND STRESS PROFILESProf. Marcel Somers (Technical University of Denmark)01/10/2019, 11:10Simulation and modellingOral PresentationThe case developing during low temperature surface hardening of austenitic stainless steel by nitriding, carburizing or nitrocarburizing consists of a supersaturated interstitial solid solution of nitrogen and/or carbon in austenite. The favorable wear, fatigue and anti-corrosion properties of this so-called expanded austenite depend on the profiles of interstitial concentration and associated...Go to contribution page
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Mr Richard Stadlmayr (Primetals Technologies Austria)01/10/2019, 11:30Simulation and modellingOral PresentationThe demand in stainless and special steel products is growing continuously and there is a clear trend to new steel grades with higher tensile stresses, tight quality margins and new material properties observable. On the other hand the raw material situation tends in opposite direction, which means the steel producers are forced to process less sorted raw materials as well as more oxydic...Go to contribution page
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Maria Carolina Payares-Asprino (Norwich University)01/10/2019, 11:50Simulation and modellingOral PresentationDual phase duplex stainless steel comprised with ferrite and austenite performance shows its strength and corrosion resistance in many aggressive environments based on outstanding performance in the last years. The current worldwide rapid growth, demand, and consumption of duplex stainless steel, particularly in petrochemical, marine, power plant, food industry and other engineering...Go to contribution page
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RODRIGO MAGNABOSCO (FEI University)01/10/2019, 12:10Simulation and modellingOral PresentationThe aim of the present work is to perform computational simulations of the equilibrium and phase transformation kinetics of a superduplex stainless steel UNS S32750 in two different heat treatment cycles: i) during heating to 1250°C from its initial duplex condition, or ii) during heating at temperatures for duplex structure from the equilibrium microstructure obtained at 1250°C solution...Go to contribution page
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Christian Schwingenschlögl (ANDRITZ AG)01/10/2019, 14:00Simulation and modellingOral PresentationState of the art metal processing lines need to suit to customer requirements, which are driven by short commissioning periods, fast start-up curves, large material flow rates and high demands in product quality. Projects in the past have shown that already minor problems encountered in engineering phase have big impact to meet these requirements. To solve engineering problems during...Go to contribution page