Open Access Conference Proceedings

Abstract: This study examines the efficacy of hydrogen in diminishing iron compounds found in dust emissions during the electric arc furnace (EAF) steelmaking processes at "Uzbeksteel" JSC. EAF dust is a fine secondary material that is made up 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 exhaust gas reported as high as 10 g/m³. [..] Read more

Abstract: During the production of aluminium and steel cast parts for safety-critical applications, it is standard practice to reduce unwanted impurities by filtration of the liquid metal prior to casting using ceramic foam filters. The most critical stage of the filtration process is the infiltration of the ceramic foam during start-up, especially when the filter cannot be preheated, as heat loss to the filter may lead to freezing and casting failure. [..] 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. For small batches or single-component production, the use of a reliable model becomes crucial to minimise the number of physical trials, material waste, as well as time and energy consumption. [..] Read more

Abstract: Hot forging of geometrically challenging 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 description 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: By using a flexible and adaptable part design and manufacturing process, a wide range of products and product families can be produced. In sheet metal forming, particularly in the automotive sector, a large number of profiles is required which are commonly used in vehicle frames. [..] 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 formed fine-grained microstructure. Additionally, the alloying element manganese promotes high 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: Nanocrystalline stainless steels exhibit limited thermal stability due to their high-volume fraction of grain boundaries, making them susceptible to grain growth at elevated temperatures. Enhancing thermal stability is therefore essential to broaden their potential structural applications. [..] 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: Metallographic images mapping metal surfaces, including their chemical composition, were obtained with sizes up to 1 Gpix (2×3 mm2) and a digital pixel size of 75 nm, well below the theoretical limit of the optical microscope. These images are part of a global priority discovery (Large-Area Digital Optical Microscopy - LADOM). [..] 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 material degradation while minimizing the amount of material removed from components for the assessment of their current condition, residual lifetime, and structural integrity. Monitoring of changes in key material properties should include all degradation mechanisms occurring during operation, with thermal ageing being one of the main factors affecting these properties. [..] 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 work focuses on the development and characterization of functionally graded materials (FGM) produced by combining the nickel-based superalloy MoNiCr and the austenitic stainless steel 316L using the DED LB/W additive manufacturing technology. The aim was to verify the technological feasibility of multi-material printing of two metallurgically distinct alloys, evaluate the quality of the interface between them, and assess the influence of deposition order and subsequent heat treatment on the resulting microstructure and hardness distribution. The results show that the deposition order significantly affects the nature of the transition zone. [..] 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