9th International Conference on Modeling and Simulation of Metallurgical Processes in Steelmaking - STEELSIM2021

Johannes Kreyca*, Sabine Zamberger – voestalpine Forschungsservicegesellschaft Donawitz GmbH, Kerpelystr. 199, A-8700, Austria
Matthew Galler – voestalpine Wire Rod Austria GmbH, Drahtstraße 1
8792 St. Peter-Freienstein, Austria
Ernst Kozeschnik – TU Wien, Getreidemarkt 9, 1060 Wien, Austria

*Corresponding: Johannes.kreyca@voestalpine.com

ABSTRACT

The combination of traditional...

In the processing of heavy plates, the leveling operation aims at improving the plate flatness and minimizing residual stresses, but is also the last process step influencing the strength properties in a significant manner. To this end, the roller-leveling machine applies multiple cycles of plastic bending with a strain sequence depending on the actual leveler setup to the plate cross section...

The mechanical properties of steels are influenced by their microstructure and particularly the grain size, with a small grain size giving high strength and toughness. A significant process for grain size control is recrystallisation during hot rolling, where the recrystallisation kinetics and recrystallised grain size are affected by the material’s initial grain size, alloy content,...

Hot-dip galvanizing (HDG) Zn coatings represent a low cost and effective way of protecting steel against corrosion. In recent years, Zn coatings containing Mg became a promising next generation of Zn-based coatings due to their superior performance compared to pure Zn coatings in terms of corrosion resistance, formability, weldability and paintability [1].

These properties are strongly...

This work presents novel results on factors influencing austenite stability in carburised high carbon bearing steels. We have conducted a series of experimental and computational studies targeted at understanding these factors, including chemical composition, austenite grain size, stress/strain partitioning, and grain orientation.
In-situ neutron diffraction in steels with different nickel...

High-value speciality steels are often designed for specific large component engineering applications. These steels, which are typically heavily alloyed, offer excellent properties in terms of fatigue, toughness, high-temperature strength and corrosion resistance. However, due to the fact steelmakers are at the start of a multi-partner supply chain, feedback regarding component manufacture and...

The high heat input welding method can improve the efficiency of manufacturing, but the impact toughness of the heat-affected zone (HAZ) is reduced seriously during the welding process. Thermal profile evolution in HAZ is the key factor affect microstructures and resulting mechanical properties of welded joints.

In this study, we coupled heat transfer, solid mechanics and solid-state...

Quenching and partitioning (Q&P) process [1] is a heat treatment to produce steels with high strength and ductility. Chemical composition and process parameters control the final phase composition of a Q&P steel, thereby influencing its mechanical properties [2]. The objective of this work is to analyse computationally the effect of the composition and process parameters on the mechanical...

Hypereutectoid steels are of major importance for the railway and cable industry due to their good hardness and toughness. In-depth understanding of the link between their microstructure and mechanical properties presents therefore a significant industrial relevance. We have realized the multiscale modelling of macroscopic elastic properties of hypereutectoid steel based on the elastic...

Warm Caliber Rolling (WCR), a thermomechanical operation carried out in the ferritic domain in the range of temperatures 500-700 °C, can lead to a strong grain refinement through mechanisms as dynamic recrystallization or recovery induced by accumulation of strain. Under proper conditions, it is possible to obtain ultrafine grained microstructures, which can significantly improve the...

Dual phase steels are extensively used in automotive safety and structural components because of their low alloying costs, relatively easy processing and optimum combination of strength and ductility. This good combination of properties is attributed to the presence of soft ferrite phase and hard martensite islands in the microstructure. More specifically, the mechanical properties are...