Open Access Conference Proceedings

Abstract: Three kinds of aluminum alloys based on Al-Zn-Mg system and doped with Ca, Ni and Ce were studied. Determination of hot tearing tendency, phase composition and structure formation investigation were conducted. [..] Read more

Abstract: Magnesium alloy Mg-4Y-3Nd was prepared by spark plasma sintering technique. The gas-atomized powder was sintered at temperatures in the range of 400-500 °C and holding time up to 10 minutes. [..] Read more

Abstract: Alloys with increased configurational entropy are new group of materials with very broad range of possible properties, but their application potential is currently limited because of complicated and inefficient manufacturing processes used mainly on laboratory scale. Paper presents the results of preliminary research aimed on manufacturing castings made of medium entropy alloys (MEA) by industry scale casting technologies. [..] Read more

Abstract: In surgery, besides the joint replacements that need permanent prosthesis implantation in the human body, there are many other clinical cases, such as bone fracture, cardiovascular diseases, in which the temporary implant materials are needed. The fixation or mechanical support are there temporarily needed during the healing process of the injured or pathological tissue, and after that, the implants accomplish their mission have no longer function in human body. [..] Read more

Abstract: Analytical and numerical analyses of room temperature compressive deformation behavior of cast in-situ composites with the chemical compositions Ti-44.6Al-7.9Nb-3.6C-0.7Mo and Ti-44.9Al-7.5Nb-4.9C-0.6Mo-0.1B (at%) were performed. The microstructural evaluation was carried out by scanning electron microscopy (SEM) and SEM in back scattered electron (BSE) mode. [..] Read more

Abstract: In-situ TiAl-based matrix composites reinforced with ceramic particles can improve the deficiency of lightweight TiAl-based alloys at high temperatures and facilitate their industrial applications using well-known and widely applied processing technologies. Carbide particles show a significant role in toughening and reinforcing of TiAl-based matrix composites. [..] Read more

Abstract: Samples of in-situ TiAl-based matrix composite reinforced with Ti2AlC particles were prepared by vacuum induction melting of a charge with a nominal composition Ti-47Al-5Nb-1C-0.2B (at%) in graphite crucibles and centrifugal casting into a graphite mould. The as-cast samples were subjected to hot isostatic pressing (HIP) and multi-step heat treatments. [..] Read more

Abstract: The effect of Al content on morphology, chemical composition, nanohardness and elastic modulus of primary (Ti,Nb)2AlC particles was investigated in in-situ composites with nominal composition Ti-xAl-8Nb-1Mo-0.1B-3.7C (at%), where x ranged from 38 to 45 at%. The in-situ composites were prepared by vacuum induction melting in the graphite crucibles and consecutive tilt casting into a graphite mould. [..] Read more

Abstract: The influence of different sintering conditions (sintering temperature and time) on the structure and properties of the investigated tungsten heavy alloy (THA) consisting of tungsten, cobalt, and nickel was evaluated within this study. The samples for sintering were prepared by powder metallurgy techniques (powder mixing followed by isostatic compression), the microstructures were investigated via optical and scanning electron microscopy, and the mechanical properties were investigated by tensile testing. [..] Read more

Abstract: The fracture initiation and propagation was studied in a novel in-situ Ti-44.5Al-8Nb-4.8C-0.8Mo-0.1B (at%) composite reinforced with carbide particles. The composite was prepared by vacuum induction melting in graphite crucibles and precise casting into graphite mould. [..] Read more

Abstract: The present work is focused on the study of high temperature low cycle fatigue behaviour of Inconel 713LC produced by a vibratory investment casting (VIC) in as-cast conditions and in the condition after heat treatment (HT) consisting of hot isostatic pressing (HIP) followed by precipitation hardening. Low cycle fatigue tests were carried out on cylindrical specimens in symmetrical push-pull cycle under strain control with constant total strain amplitude and strain rate at 800 °C in air. [..] Read more

Abstract: Gas porosity is one of the most common casting defect in die cast parts and it has an undeniable effect on strength, leakage and heat treatability. Reducing and even preventing porosity level can be achieved by the integrative design of mold, vacuum system and optimized process parameters. [..] Read more

Abstract: We live in the age when humanity finds itself on the edge of energy crisis, fossil fuels are consumed and our energy consumption rises every year. One solution would be to obtain energy from renewable sources and to minimize the losses of energy produced, e.g. [..] Read more

Abstract: Advanced in-situ and ex-situ methods were used to reveal active deformation mechanisms during deformation of magnesium alloy with a strong texture. Three sets of samples were prepared from the rolled sheet of commercial AZ31 alloy with respect to its strong basal texture – normal direction (ND), rolling direction (RD) and 45° between RD and ND, and were deformed in both compression and tension. [..] Read more

Abstract: An efficient technology is currently being searched for the processing of electric arc furnace (EAF) steelmaking dust obtained at the Ural steelmaking plants. In this study, the hydrometallurgical processing of electric arc furnace dusts after Wealz process was investigated on a laboratory scale under normal temperature and pressure conditions. [..] Read more

Abstract: Biodegradable implants are effective because of no revision surgery is needed for further implant removing. It was known that the Mg-Zn-Ca-(Mn) alloys are promising for biodegradable applications because of high biocompatibility and enough mechanical properties. [..] Read more

Abstract: The ever-increasing demand for weight reduction of manufactured parts is leading to the replacement of steel with light metals such as aluminum and magnesium. However, light metals are at times unable to withstand high tribological, thermal or mechanical loads. [..] Read more

Abstract: Today, the demand for platinum is constantly growing. It is related to its use as a catalyst mainly in the production of cars. [..] Read more

Abstract: Superplastic behavior of ultrafine-grained (UFG) magnesium alloy Mg-4Y-3RE (wt%) prepared by equal channel angular pressing (ECAP) was investigated at high strain rates. Eight passes through ECAP resulted in grain refinement down to ~340 nm and formation of a high volume fraction of fine secondary phase particles located at the grain boundaries and triple-points. [..] Read more

Abstract: We performed continuous casting of Cu-9Al alloy, following microstructure characterization and computational simulation. Numerical simulation was done on the two scales: within the thermo-mechanical model on the macro scale and the phase-field approach on the mesoscopic scale. [..] Read more