Open Access Conference Proceedings

Abstract: This study examines the efficacy of hydrogen in reducing iron compounds found in dust emissions during the electric arc furnace (EAF) steelmaking processes at "Uzbeksteel" JSC (Uzbekistan). EAF dust is a fine secondary material composed of 30 to 60 percent iron oxides (Fe2O3, Fe3O4, FeO). [..] Read more

Abstract: In integrated steel mills, the desulphurization of pig iron from the blast furnace is a crucial pretreatment step before the hot metal is converted into steel in the basic oxygen converter. During this process, significant dust emissions can occur, reaching up to 1 kg per tonne of liquid steel, with dust concentrations in the off-gas reported as high as 10 g/m³. [..] Read more

Abstract: During the production of metal cast parts for safety-critical applications, it is common practice to reduce unwanted impurities by filtration of the liquid metal using ceramic foam filters before the melt enters the casting mold. A critical stage of the filtration process is the infiltration of the ceramic foam during start-up (commonly called priming), especially when the filter cannot be preheated, as heat loss to the filter may lead to freezing and possibly casting failure, usually requiring foundries to use higher casting temperatures. [..] Read more

Abstract: The European steel industry is facing transformational changes that will affect metallurgical quality, including steel cleanliness. In the face of this, digital simulation and virtual engineering methods are being increasingly employed in the steel industry to test and optimize process and equipment designs quickly and accurately. [..] Read more

Abstract: Electroslag melting is a promising approach to the recycling of fine scrap and high-alloy steel waste. Owing to the refining capacity of slag and the controlled thermal conditions of melting and solidification, the process makes it possible to produce high-quality ingots of secondary metal suitable for further use in high-tech industries. [..] Read more

Abstract: Shear cutting operations, such as blanking, are critical in forming technology but often oversimplified in FE simulations, reducing predictive accuracy for cut edge quality. This study evaluates three failure modelling approaches for a FE model of DC04: the modified porous Gurson model and the Johnson-Cook model with element deletion and mesh separation. [..] Read more

Abstract: Finite Element Method (FEM) simulations are essential for predicting feasibility, outcomes, and defects in hot plastic deformation processes. In small batches or single-component production, a reliable model is crucial to minimise the number of physical trials, material waste, and overall time and energy consumption. [..] Read more

Abstract: Hot forging of complex geometrical components such as joint crosses is highly sensitive to process parameter variations, leading to geometric deviations and increased scrap rates under industrial conditions. A reliable modelling of the forming process, taking varying process parameters into account, is therefore essential for improving process stability and enabling model-based quality assurance. [..] Read more

Abstract: Powder metallurgy offers a promising approach to produce components with complex near-net-shape geometry after forming and excellent microstructural properties. The process chain consists of powder pressing of a green body, sintering, and sinter forging. [..] Read more

Abstract: In lightweight construction, particularly in the automotive sector, load-adapted profiles are required to reduce weight whilst maintaining the necessary stiffness. Since chassis and body components account for approximately 41% of total vehicle weight, reducing their weight by optimising load-bearing capabilities is essential. [..] Read more

Abstract: The majority of highly stressed steel components are manufactured through hot forming due to the increase in strength and toughness resulting from the fine-grained microstructure. Thereby, the alloying element manganese is added to further increase the material strength and hardness. [..] Read more

Abstract: This study presents new experimental results showing how strongly the surface quality of steel plates influences their cooling rate during continuous production. The investigated phenomena are directly relevant to industrial water-based cooling technologies applied to steel plates on the Run Out Table, during accelerated cooling, and in interstand cooling sections of hot rolling mills. [..] Read more

Abstract: In this study, an AISI 304L stainless steel was produced with a nanocrystalline structure using a high-energy mechanical alloying technique with Y-element and nanoscale B4C additions and annealed at 900 °C for 1h. Structural changes and mechanical properties were investigated using X-ray diffraction analysis, Archimedes density and microhardness test, respectively. [..] Read more

Abstract: The influence of specimen temperature on displacement efficiency was investigated for duplex stainless steel EN 1.4462 using a 20 kHz ultrasonic fatigue testing system. Resonance-controlled tests were conducted over incremental excitation levels defined by the function generator output voltage (VPP), with continuous phase control to maintain stable resonance. [..] Read more

Abstract: This study presents the results of fatigue investigations performed on additively manufactured austenitic stainless steel 316L produced using the Laser Powder Bed Fusion (LPBF) technique. Fatigue tests were conducted under axial tension–compression loading for three different stress ratios: R = −1, −0.5, and 0. [..] Read more

Abstract: Long-term operation of nuclear power plants requires reliable monitoring of thermally aged materials while minimizing the amount of removed material. This paper presents the application of the Small Punch Test (SPT) as an additional mechanical testing method for monitoring the properties of austenitic main circulation piping material. [..] Read more

Abstract: This article presents the results of accelerated tests conducted to determine the durability of steel sheets in a salt spray environment. Steel sheets, protected against environmental impacts using various technologies and then cold-formed, were selected for the tests. [..] Read more

Abstract: This paper deals with the development and characterisation of functionally graded MoNiCr-316L materials manufactured by directed energy deposition with laser beam and wire feedstock (DED-LB/W). The work verifies the feasibility of joining a nickel-based MoNiCr alloy, developed by COMTES FHT a.s. [..] Read more

Abstract: Ensuring high strength at low weight in aircraft joints presents a constant challenge for designers and researchers. One widely used material in this industry is 2xxx series aluminum alloys. [..] Read more

Abstract: The improvement of surface quality in difficult to cut materials is critically important for enhancing service life. Plasma electrolytic polishing (PeP) is a promising surface finishing technology that provides high quality and eco-friendly smoothing of metal surfaces. [..] Read more