Open Access Conference Proceedings

Abstract: <div>The paper deals with the evaluation of the surface texture of parts produced by material extrusionbased 3D printing technology (FDM/FFF). Samples from PETG material were used for evaluation. [..] Read more

Abstract: Hot tearing is one of the most critical casting defects that affect the castability of an alloy and the final integrity of a component. Despite being extensively studied over the past 70 years, multiple theories persist regarding the mechanism that control the crack development and the key influencing phenomena. [..] Read more

Abstract: <div>Hybrid materials are increasingly used in lightweight construction. The combination of metallic materials with fiber-reinforced plastics (FRP) can reduce weight and improve the mechanical properties of a component. [..] Read more

Abstract: <div>AlCoCrFeNi2.1 alloy belongs to a group of materials called eutectic high-entropy alloys (EHEAs). These have gained attention due to the fact that there is no so-called "strength ductility trade-off". [..] Read more

Abstract: <div>Ti nanoparticles were deposited on a glass substrate by a gas aggregation source and coated with a thin layer of Niunder different deposition conditions. The resulting composite consists either of a mixture of TiO2-covered Ti nanoparticles or core-shell Ti-Ni nanoparticles embedded in the Ni matrix. [..] Read more

Abstract: <div>In this study, the comparative experimental research was performed to quantify the effect of distilled water absorption on the mechanical characteristics of composite samples. The composite samples were reinforced with paraaramid fabric Twaron CT 747. [..] Read more

Abstract: Wear resistance is vital for parts that require sliding contact. Different surface treatments have existed in industry and anodizing is the one of techniques for forming a protective oxide coating to improve hardness and abrasion resistance. [..] Read more

Abstract: <div>Aluminium alloys are popular among automotive heat exchangers designers due to their high thermal conductivity, good corrosion resistance and excellent strength-to-weight ratio. Aluminium alloy EN AW-3003 and its modifications are commonly used in this field. [..] Read more

Abstract: <div>Conventional extraction methods like cyanidation face significant challenges with refractory ores, prompting the need for more sustainable alternatives to gold extraction and its metal production. This study evaluates the application of Ethaline, a deep eutectic solvent (DES) composed of choline chloride and ethylene glycol, for dissolving gold from sulfidic refractory ores under varying pH conditions. [..] Read more

Abstract: <div>Distinguished by its wealth in refractory gold deposits, Davao de Oro in the Philippines has historically relied on cyanidation for gold extraction. This method, while prevalent, employs toxic cyanide, leading to significant environmental and biological risks. [..] Read more

Abstract: <div>Additive manufacturing of titanium and its alloys traditionally relies on powder bed fusion techniques, which consume substantial energy. Vat photopolymerization additive manufacturing offers design flexibility similar to powder bed fusion techniques, improved resolution, and a notable reduction in energy consumption. [..] Read more

Abstract: <div>During ferromanganese production, the manganese ores transit in different zones before reaching the coke bed zone called prereduction and reduction zone. The transition higher to lower oxides manganese oxides occurs reaching MnO. [..] Read more

Abstract: <div>This paper was prepared as a part of research and development activities carried out within the framework of the project of the Technology Agency of the Czech Republic reg. no. [..] Read more

Abstract: <div>The influence of Zn presence on degradation mechanism of Sn-based alloys was studied on naturally aged historical material. Special attention was paid to low temperature phase transformation of Sn also known as tin pest. [..] Read more

Abstract: <div>This paper concerns the characteristics of the material considered as one of the potentially applicable ones under the research topic "Sustainable lead-free fittings for drinking water and gas installations - machinability and connection possibilities".One of the main assumptions of the project were eliminating the recrystallization annealing process because of the use of controlled cooling after forging. The test material was lead-free brass CuZn21Si3P. [..] Read more

Abstract: <div>The so-called tin pest is a phase transformation of white tin ((Sn)) into grey tin((Sn)), where the disintegration of tin materials occurs due to different thermodynamic stability of the phases with a transition at 13.2 °C. The degradation is relatively slow until -50 °C where the maximum speed is located. [..] Read more

Abstract: <div>Electric Current Assisted Sintering (ECAS) systems offer an efficient method for creating sintered materials. ECAS systems are complex systems that need both thermal and electrical models coupled with each other. [..] Read more

Abstract: <div>Operational constrains of Hot Dip Galvanizing Line – HDGL - management are more and more challenging: competitiveness (quality/yield improvement – productivity increase – OPEX reduction), flexibility (complex product-mix) and environment footprint reduction (lower energy consumption, raw material savings). These challenges can be addressed with the usage of digital tools enhancing the process optimization and automatic control of production lines.For that purpose, physical-based models have been built and industrially implemented in order to predict microstructural evolutions during annealing and related mechanical properties of flat-C steels at the line exit.These models rely on the description of the main metallurgical phenomena, i.e. [..] Read more

Abstract: <div>Additive manufacturing and 3D printing is one of the most rapidly evolving industry branches nowadays. This technology brings possibility of creating new designs and materials which military industry could adopt with its benefits. [..] Read more

Abstract: <div>In 2023, the subsidiary transport company Doprava TŽ, s.r.o. was merged with the parent steel company Třinecké železárny, a.s. [..] Read more