Open Access Conference Proceedings

Abstract: The recycling of metal waste and scrap is an essential component of a circular economy, which is predicated on the principles of reducing waste and consumption of resources through the reuse and recycling of materials. However, it is not always possible to process the metal while maintaining its chemical composition and producing high-quality ingots without complicating the technological process and incurring excessive costs. [..] Read more

Abstract: To analyze secondary cooling control systems in continuous steel slab casting, a mathematical heat-transfer model and corresponding software tool were developed. The model is based on nonlinear heat conduction and solidification equations to predict temperature distribution in a longitudinal cross-section. [..] Read more

Abstract: Next generation casting technologies such as thin slab, belt or strip casting have gained popularity due to the reported energy saving, which can be as high as 1.6GJ/tonne when compared to conventional thick slab casting. However, these casting approaches result in changes in cooling rate during solidification and in thickness reduction to the required product geometry, which could affect the resulting microstructure and elemental segregation. [..] Read more

Abstract: The quality of titania slag has been largely investigated using coke. However, the environmental threats caused by carbon emissions has opened a platform to investigate the use of other reductants and their impacts on the slag quality. [..] Read more

Abstract: In this study, Dense Optical Flow (DOF) was applied to videos of tundish and mold water models to reconstruct 2D velocity fields and flow structures. Two bench tests (air bubbles; salt tracer) show that DOF yields quantitative maps suitable for analysis. [..] Read more

Abstract: With rising energy costs, efficient and accurate heating of the charge to rolling temperature is critical to reducing operating costs and improving the quality of the finished product. The surface temperature of the charge obtained from non-contact measurements after exiting the furnace does not provide information about the internal temperature of the charge, nor does it reveal the temperature profile prior to exiting the furnace. [..] Read more

Abstract: Although high entropy alloys (HEAs) have captured significant attention over the years, the nanocrystalline microstructure of HEAs, similar to that of conventional alloys, is unstable against grain growth. Our initial experimental results have revealed that the hardness of nanocrystalline CoCrFeNi HEA, measured as 517.8 ± 25 HV, decreased substantially to 221.5 ± 11 HV after 1 h of annealing at 1100 °C, and continued to decrease with prolonged annealing, reaching 184 ± 6.4 HV as the annealing time was extended. [..] Read more

Abstract: High-strength, low-alloy (HSLA) steels, although known for years, are not very popular in the industry. Controlled thermo-mechanical rolling poses significant challenges for process engineers and is only feasible in a few rolling mills worldwide. [..] Read more

Abstract: Induction thermography is a well-established method for detecting and analysing cracks in metal products, such as rails. However, quantifying defects, particularly those with complex geometries, remains a challenging and intricate task. [..] Read more

Abstract: This study investigates the influence of cracks, of semi-elliptical shape according to ASME III rules, which is assumed be located near the pipe region where tensile stress is expected. The investigation refers to pipe whip conditions. [..] Read more

Abstract: The frames of tank semi-trailers are usually made of carbon steel. However, this steel is susceptible to corrosion. [..] Read more

Abstract: The aim of this research was to study the effect of Nickel additions to high strength steel alloys and to obtain an optimal chemical composition that does not compromise the tensile strength and wear resistance properties provided by the OEM (Original equipment manufacturer) with cost saving to the manufacturing local foundry. The nickel content was added in composition from 0.5 wt% to 3.5 wt% to the molten metal. [..] Read more

Abstract: Using final machining, as a finishing technology, components with specific precise dimensions are obtained. Despite the precise type of machining, the integrity of the surface is significantly affected, and the material acquires some negative surface properties that cause a decrease in corrosion resistance. [..] Read more

Abstract: In the design and analysis of shell and tube heat exchangers, choosing the appropriate material is essential. Materials are chosen based on several factors, such as excellent thermal conductivity, strong corrosion resistance, and robust structural integrity. [..] Read more

Abstract: This study investigates the application of infrared (IR) thermography for evaluating thermal-sprayed coatings, focusing on distinguishing coatings subjected to different thermal treatments and varying porosity levels. Experimental thermographic analysis demonstrated the capability of IR thermography to differentiate between coating variants. [..] Read more

Abstract: This study investigated how boronizing affects the electrochemical corrosion behaviour of boronized carbon steel 1020 (0.049 wt.% C and 12.700 wt.% B) and stainless steel 304 (0.003 wt.% C and 8.940 wt.% B). Both materials were boronized using Borax powder at 900°C for eight hours, forming boride layers on their surfaces. [..] Read more

Abstract: The unique combination of properties of surface as well as core of steel can be achieved by the electron beam hardening. However, in order to achieve desired results, it is first necessary to obtain a surface of sufficient hardness (i.e. [..] Read more

Abstract: The influence of thermomechanical processing history on the microstructure and thermomechanical behavior of Ti-3Al-8V-6Cr-4Zr-4Mo titanium alloy was subjected to the analysis in this research. The alloy flow stress curves were elaborated basing on compression tests performed under various temperatures and strain rates. [..] Read more

Abstract: Metallurgy is one of the industrial sectors that very well express the basic principles of the circular economy. This study presents the production of two main metals - zinc and lead - through the lens of the circular economy. [..] Read more

Abstract: Energy storage remains a central challenge in realizing a complete transition to renewable energy sources, with hydrogen storage emerging as a particularly promising solution. Metal hydrides offer a viable platform due to their high volumetric density of hydrogen and safety. [..] Read more