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

Quality control for efficient steel processing is extremely important with the need to decarbonise production, produce steels to tighter material property constraints. Thermo-mechanical controlled processing and the models for predicting microstructural development need input from smart sensing technologies to improve their capability, particularly for advanced high strength steel grades...

ABSTRACT
Flow behavior constitutive equations have been widely used in FE analysis and parameter's optimization in thermomechanical processes of micro alloy steels. Flow curves of API-5L X70 pipeline micro alloy steel were analyzed to determine the material genome. Hot compression tests were performed over the different temperatures of 850-1150 °C and the strain rate range of 0.001-1 s^(-1) ...

Fasteners are quite simple products but critical in most sectors. Bolt manufacturing is a large, well-established industry worldwide with a long history however, due to the low value nature of this product type, the production process has not been fully metallurgically optimised, increasing yield and production rates have instead been main areas of improvement. With modern analysis tools and...

In this research, a previously developed hot rolling simulation system, based on novel meshless computing technology, is upgraded from the pure plastic to a more realistic elasto-plastic material model that allows to cope with damage mechanics. This enables a more detailed virtual testing of different rolling schedules. Helmholtz free energy is used to structure damage coupled constitutive...

Temperature dependent strain induced precipitation of (Ti,Nb,V)(C,N) MX carbonitrides can retard static recrystallization. Predicting the role of microalloying elements on the recrystallization behavior by thermokinetic simulation is expected to support the technological process optimization and cost reduction of steel development. In this study, we assess the predictive power of...

Identification of the three-dimensional cellular automata (CA) model of static recrystallization (SRX) based on the inverse analysis concept is the primary goal of the research. The developed CA model is a full-field approach that captures local heterogeneities in grain morphology, crystallographic orientation, and distribution of stored energy after deformation. The identification stage is...

A knowledge driven, physically based and reliable determination of process parameters during hot rolling is crucial for the accurate prediction of final product properties and for the precise layout and design of hot strip mills.
Based on known initial conditions of the material and accurate product tracking, the evolution of physical properties can be calculated based on the time-temperature...

Industry 4.0 promotes the use of digital twins to improve manufacturing efficiency. In this paper we report work being carried out at the NISCO-UK Research Centre at the University of Leicester, UK, looking at steel plates manufacturing. Physics-based models of the production of slabs by continuous casting and subsequent rolling are used to further improve the understanding of the impact of...

Since its first implementation in the 1950’s thermo-mechanically controlled rolling has proven to be invaluable in steel industry for giving grain size refinement and hence improved strength and toughness. This led to widespread use of lab based thermo-mechanical simulators, such as Gleeble and ServoTest machines, to reproduce the strain, strain rate and temperatures of hot deformation and...

Mesh quality is a fundamental issue with the Finite Element Method. Structured meshes are quite common: however, they usually have some problems when it comes to change rapidly the element size in the adaptive mesh. For this reason, to usage of unstructured mesh is more appropriate when the target is the creation of an adaptive mesh using quadrilateral elements. This work aims to present a...

Advanced high strength steel (AHSS) strip used in the yellow goods sector needs a balance of high strength with good toughness and bendability. Cracking during bending can result in failure depending on radius to thickness ratio, in view of the relative low ductility and complex microstructure of these steels. This paper examines how local compositional inhomogeneity can affect bending...