Integrated Computational Materials, Process and Product Engineering – IC-MPPE 2022

Continuous casting is the most dominating process in modern steelmaking, with more than 95 % of the annual world steel production. Currently, great effort is made to develop online-capable quality prediction systems based on fundamental metallurgical concepts with fast runtimes. The essential part of so-called “quality index” strategies is, of course, their industrial verification but also...

In this paper we present the results of the simulation of a dross particle growth from a zinc melt. It is shown that despite the isotropy of the interfacial kinetics used in the simulation, the hydrodynamics alone could introduce an anisotropy in dross particle growth, similar to the natural anisotropy. The natural interfacial kinetics in faceted crystal growth are responsible for the faster...

The requirements on new materials used in mobile communications are driven by the demand for higher data transfer rates. Single crystalline piezoelectric materials such as LiTaO3 and LiNbO3 have thereby qualified as substrates for precise and efficient frequency filters and are consequently employed in the newest 5G mobile communication network standards. Crystal growth in specific...

Thermophysical properties of materials and the optimization of the heat transfer are becoming more and more important for industrial applications of micro- and nanoelectronic devices. Thin layers in the micrometer to nanometer range are used to give specific functions to the devices. Since the thermophysical properties of thin layers differ from bulk material, this data is required for precise...

Mechanical properties of metals and alloys depend critically on the microstructure, for e.g., yield strength increases with a decrease in average grain size, also known as the Hall-Petch effect. During thermomechanical treatments, microstructure processes such as grain growth and recrystallization significantly modify the average grain size and grain size distributions. Both these processes...

High-temperature laser scanning confocal microscopy (HT-LSCM) represents an excellent in-situ technique to observe austenite grain growth at elevated temperatures. In manufacturing processes, the grain size represents an important material parameter, especially for surface defect sensibility during continuous casting. Controlling the austenite grain size in further production steps determines...

Nowadays, most steel grades are well described by commercial databases enabling to perform reliable calculations of thermodynamic properties and phase diagrams over a wide composition range. However, to further improve thermodynamic databases for advanced steels, e.g., silicon alloyed electrical steels, medium Mn-steels, or higher alloyed tool steels, there is still a need to provide new phase...

The production of steel coils with scrap material using an electric arc furnace (EAF) results in a very low CO2 emission compared to traditional production in blast furnace followed by basic oxygen steelmaking, but introduces many foreign elements by scrap. The impact of these foreign elements on the mechanical properties, such as the plastic strain ratio (r-value), is in many cases not...

The Materials Center Leoben (MCL) develops and implements simulation tools and software to characterize, understand and design materials properties at different length scales, using various methods closely interlinked with experiments. MCL constantly pursues novel and vanguardist Software development approaches. To streamline the software development workflow, MCL started the implementation...

The Materials Center Leoben has a broad spectrum of innovative, useful, and user-friendly software solutions for material, process and product development, covering different length scales and methods. Some examples at the macroscopic scale include tools to predict crack propagation in wheelset axles (INARA) and visualize residual stresses in rails (VRS). Going down to the atomistic level, the...

SAC305 (Sn–3.5 wt.% Ag–0.5 wt.% Cu) is one of the most promising alloys to replace Sn–Pb solder alloys in microelectronics packaging. During reliability testing, ball grid array (BGA) test vehicles are subjected to accelerated thermomechanical cycling in order to induce crack initiation and crack propagation. The thermomechanical behaviour of SAC305 solder balls varies widely because of the...

In recent years, 3D integration technology plays an important role with respect to improved functionality and miniaturization of microelectronic devices. Through Silicon Via (TSV) technology enables electrical connection through the different layers of the 3D stacks. Those metallized vertical vias are introduced by etching holes into the silicon. The holes are then either coated or filled with...

Keywords: residual stress state; finite element modeling; railway axle; cold rolling; corrosion fatigue
Wheelset axles are among the most safety-critical components in the railway area. Mechanical surface treatments like the cold rolling process introduce residual compressive stresses at the surface of such components. Furthermore, it increases the fatigue strength even under the influence of...

To cope with the ever-growing needs for high-performance materials, a strong ongoing trend exists worldwide towards installation of material development and processing platforms termed materials acceleration platforms (MAPs). A common element of these initiatives is the transition from stand-alone simulation or characterization tools towards integrated environments combining databases,...

The evolution from Digital Models to a Digital Shadow and a full Digital Twin is presented for a multi-physical lab-scale problem representing industrial manufacturing processes using induction hardening to produce components with defined material properties. The transfer to the industrial scale is a mid- to long-term process built on close cooperation between research and industry and must be...

The aim of this work is to calculate local hydrogen concentrations in high-strength steel fasteners. For quantification, both, the trap densities and binding energies must be known. We present a process and microstructure sensitive model to quantify trap densities and corresponding binding energies to study of the distribution of hydrogen and local concentrations within the component. With...