Open Access Conference Proceedings

Abstract: With increasing interest in lightweight construction and cost-efficient sheet production methods, the twin roll casting of non-ferrous metals is constantly developing, due to the combination of several different process steps into one process. However, its challenge is the impossibility of direct recording of important process parameters such as temperature and pressure distribution in the rolling gap, in order to control product properties, due to the difficult process conditions. [..] Read more

Abstract: The paper studies the improvement of cavitation erosion resistance for Nimonic 80A alloy whose surface has been subjected to nitriding. The cavitation erosion tests were performed with an ultrasonic vibrating device in accordance to ASTM G32-2010. [..] Read more

Abstract: The high energy ball-milling (HEBM) procedure has been used for the preparation of magnetically hard/soft (1-x)SrFe12O19/xCo nanocomposite (with x = 0.1, 0.2 and 0.3). Effects of aging temperatures (800 - 1000 °C) on microstructure, morphology and magnetic properties have been studied. [..] Read more

Abstract: The paper investigates an approach to the synthesis of classical heat-resistant alloys by laser cladding (LC) or direct laser deposition (DLD). This approach corresponds to the concept of developing the production of small parties of metal products with the economically feasible use of additive technologies. [..] Read more

Abstract: Spark Plasma Sintering (SPS) or Field-Assisted Sintering Technique (FAST) is a powder metallurgical (PM) heat-assisted process, where loose metal powder is pressed to a compact. Powders, which are difficult to consolidate, can be processed much more efficiently than within the conventional PM process route, i.e. [..] Read more

Abstract: Mechanical and electrical properties of an Al–Er–Zr alloy were investigated. Microhardness and resistometry measurements were supplemented by transmission electron microscopy and scanning electron microscopy. [..] Read more

Abstract: Metallic networks are promising candidates for new age porous materials wherein porosity is induced by manoeuvring network architecture. Their properties are thus highly dependent on architectural parameters like fibre segment length, orientation of fibres, porosity etc., apart from being dependent on the nature of material and processing conditions. [..] Read more

Abstract: Welding of aluminum alloys with austenitic stainless steel is considered one of the most complex phenomena and is specific to high precision industries such as: aerospace, rail, cars and marine structures, as inflexible tolerance are required during the assembly of various engineering components. Joining of such alloys through conventional fusion welding processes is a difficult task because of the metallurgical incompatibility. [..] Read more

Abstract: In the recent years it has been a tremendous interest in the complex concentrated alloys (CCAs), due to their novelty introduced by the multiple principal elements concept. As a new generation of structural materials, CCAs have the potential for a promising range of properties. [..] Read more

Abstract: Copper-silver alloys are preferred alloys when it is desired to maintain the electrical conductivity and mechanical strength values at room temperature, at high temperatures, and where it is necessary to have higher creep strength and softening temperature than ordinary copper alloys. In this study, the effect of phosphorus content and cold deformation ratio were investigated on the mechanical properties and electrical conductivity of a copper-silver alloy which is called CuAg0.1 (CW016A). [..] Read more

Abstract: Amorphous alloys have attracted considerable attention as new structural materials due to their excellent mechanical properties, high wear and corrosion resistance, magnetic properties, and electrical resistivity. However, most of them become brittle by crystallization, structural relaxation, or by separating intermetallic phases during heating. [..] Read more

Abstract: The article deals with tribological evaluation of surface properties and their changes in biodegradable material PLA (polylactic acid). On samples prepared using 3D FFF printing technology, with uneven filling density, printed on the Prusa printer. [..] Read more

Abstract: Aluminum-silicon alloys are important materials in foundry to produce light components to be used in the automotive industry for weight saving, reduction of carbon emission from vehicles and air pollution. The mechanical properties of these alloys are strictly related to the final microstructure that can be improved by grain refinement. [..] Read more

Abstract: Both Energetic and Metallurgy industry produce large amount of fine grain waste products. Thanks to their properties and composition these waste substances can be recycled back in their original production, where they become from. [..] Read more

Abstract: Hip replacement is a surgical procedure in which parts of a hip joint are removed and replaced with a prosthesis, most commonly made of titanium-based alloys. Although considerable advances have been made in this field, the fracture is still one of the main problems associated with hip implant failure. [..] Read more

Abstract: Electron beam brazing combines the advantages of carrying out the process in a vacuum with the possibilities of precisely controlled heat source. Under high-temperature vacuum conditions the oxide layer is decomposed, which improves the wetting properties of the base metal, thus resulting in better joint properties. [..] Read more

Abstract: The paper deals with the possibility of obtaining zinc and iron from waste galvanic sludge, which arises during galvanic plating. The practical part describes laboratory experiments of the hydrometallurgical process of leaching in acids, with the addition of oxidizing agents. [..] Read more

Abstract: Currently, nickel heat-resistant single-crystal (SX) alloys of the second generation are the most popular in the production of gas turbine blades. Direct crystallization technology for manufacturing of SX turbine blades is associated with the inability to fully utilize the potential of the alloy. [..] Read more

Abstract: The aim of this study was to determine the influence of heat treatment on the microstructure of single-crystal nickel-based alloy manufactured by selective laser melting with a high-temperature substrate preheating. The change of gamma/gamma prime -phases ratio was established as a result of various heat treatment modes.. [..] Read more

Abstract: The conditions for mouldings experimental samples based on aluminum powders of various granulometric composition are presented. The optimal compositions of the charge for pressing, the technology were worked out and the specific pressing pressure was found out, which is 168 MPa. [..] Read more