Open Access Conference Proceedings

Abstract: This paper presents a study of the effect of high voltage electrospark deposition (ESD) using tungsten electrode on the carbon steel. The layers were investigated with metallographic methods. [..] Read more

Abstract: Twin-roll casting (TRC) is a modern method of preparation of aluminum alloys. The distinctive feature of TRC is the combination of rapid metal solidification and subsequent plastic reduction in a single combined processing step. [..] Read more

Abstract: Evolution of microhardness during isochronal annealing up to 600 °C was studied in strips processed from Al-Mg-Sc-Zr alloy. Specimens for all measurements were prepared from conventionally mould cast and hot rolled strips (CC) or from strips after twin-roll casting (TRC). [..] Read more

Abstract: Alloys based of the Ni-Ti binary system have important position in a branch of shape memory alloys. Zirconium is an important alloying element giving these alloys needed stability at high-temperature applications. [..] Read more

Abstract: Phase change materials (PCMs) are now a well-established category of materials for thermal energy storage. Most PCMs need to be hermetically sealed in a container or a storage tank because of the risk of leakage to the surrounding environment when a PCM is in the liquid state. [..] Read more

Abstract: The study reports the results of laboratory investigation to develop the method of the recovery of zinc in either a metallic or oxide form from production waste containing about 70% Zn and the compounds of Fe, Cd, Cu and Mn. Laboratory tests were conducted in two directions using, respectively, a pyrometallurgical method and a hydrometallurgical method. [..] Read more

Abstract: An important role in the investment casting process is played by the surface condition of the first coating of a multi-layer ceramic mould, as it directly affects the quality of the obtained cast. In industrial conditions, it is not possible to assess surface quality of the first ceramic mould cover without breaking it. [..] Read more

Abstract: In this paper the effect of grain size and gadolinium content on mechanical properties was studied. The Mg-Gd binary alloy with broad range of Gd concentrations (0.4 to 4.2 wt.%) and grain size (15 to 500 μm) were used. [..] Read more

Abstract: The rolled sheet of AZ31 with the strong basal texture in ND direction was used for this study. Three different sample orientations (ND, 45, RD) were cut out and deformed in compression and tension. [..] Read more

Abstract: The paper presents the results of research aimed at the use of thermal imaging as the method of assessing changes in the structure of multi-layered ceramic forms, intended for the investment cast parts of air blades. Analysis of infrared radiation allows to notice anomalies resulting from incorrect temperature distribution, which, in combination with other methods of quality control, creates the possibility of developing an innovative system for monitoring unit processes of producing jet engine components. [..] Read more

Abstract: In the present work, the route of preparation for specimens by high temperature aging of preliminary pressed mixture (briquettes) of the Fe powder with differ nitride powders (BN, Si3N4, AlN) is suggested and the microstructure and magnetic properties of the synthesized alloys are studied. The pressed briquettes from iron and nitride powders mixture in desired proportions were heated in the nitrogen atmosphere till temperatures of 1300-1550 °C and held for 3 hours, and subsequently cooled along with the furnace. [..] Read more

Abstract: The behavior of deformation bands associated with the Portevin-Le Chatelier (PLC) effect was studied in an Al-Mg alloy. The microstructure of the alloy consisted of coarse grains with approximately equiaxed shape and average size of 40 μm. [..] Read more

Abstract: The practical use of FeAl intermetallic alloys will be possible in a wider range after the development of not only the technology of making permanent joints, but also after determining their physicochemical properties. In the work, the surface condition of the intermetallic FeAl alloy by use TIG AC and DC(-) were remelted and in the air at 900 and 1000 °C were oxidized. [..] Read more

Abstract: The aluminum alloys with 1 % Fe, 0.3 % Zr, 0.25 % Si and with 1 % Fe, 0.3 % Zr, 1 % Si (in wt.%), were investigated after hot rolling to a strain of 70% at 300 °C followed by annealing at 400-500 °C during 1 and 3 h. The hot rolling resulted in the elongation of initial grains along the rolling direction. [..] Read more

Abstract: Titanium alloys are materials exhibiting outstanding physical and functional properties. Metastable β titanium alloys are a prospective group featuring complex phase transformations which can be utilized to tailor the material performance. [..] Read more

Abstract: The paper presents, the impact of process variables on connection parameters during micro-welding of H800 superalloy. The research discusses the apparatus and features, including the advantages of the welding procedure. [..] Read more

Abstract: The self-propagating high temperature synthesis (SHS) was used to fabricate Ti-Si intermetallic phases. The phases were synthesized by the exothermic reaction between Ti and Si powders with proportions corresponding to the composition of Ti3Si, Ti5Si3, Ti5Si4, TiSi and TiSi2 phases. [..] Read more

Abstract: Process production of copper in a slurry furnace (Outokumpu technology) is based on converting copper matte for a blister, and slag containing even 16% copper oxides. Such slag is tapped into the electric arc furnace in sequence. [..] Read more

Abstract: The present work is focused on the synthesis of inequiatomic AlCoCrFeNiTi0.5 high entropy alloy (HEA) with composite structure reinforced by TiC nanoparticles. The initial alloy was prepared by mechanical alloying (MA) in a planetary ball mill, compacted by spark plasma sintering (SPS) and heat treated to obtain better microstructure. [..] Read more

Abstract: Magnesium alloyed with 0.3 wt.% Zr was processed by extrusion followed by equal channel angular pressing (ECAP) for 1, 2, 4 and 8 passes. The material was characterized using microhardness measurements, compression tests and electron backscatter diffraction (EBSD). [..] Read more