Open Access Conference Proceedings

Abstract: In this work, plasma coatings of NiAl10 and NiAl40 on magnesium alloy AZ91 substrate were prepared by the hybrid plasma spraying system WSP®-H 500. The both plasma sprayed coatings of NiAl10 and NiAl40 have metallurgical bond. [..] Read more

Abstract: The AlSi17/Mg joints under analysis were produced by diffusion bonding. They contained intermetallic phases, which were a result of diffusion occurring at the AlSi17/Mg reactive interface. [..] Read more

Abstract: The AZ91/AlSi17 bimetallic samples were formed using the compound casting method. The AZ91 magnesium alloy was top-poured onto an AlSi17 aluminum alloy insert placed in a steel mould. [..] Read more

Abstract: As a pyro-metallurgical process, a fluidized-bed process can be employed because of its high transfer rates of heat and mass between gas and powder particles. The metal powder production usually needs to be divided to a few steps to obtain an efficiency of stepwise control or to solve some operational difficulties. [..] Read more

Abstract: The paper presents the results of investigation concerned with the inner surface quality of Zr-1% Nb alloy tubes produced on a KPW-type pilger rolling mill with an elongation factor of = 3.9. In order to analyze the influence of applied velocities and deformations on the variations of the flow stress σp values of the investigated alloy, an experiment by testing programme was carried out in industrial conditions and the physical modelling of the rolling process was performed. [..] Read more

Abstract: The effect of Al and Fe substitution in the cobalt sublattices on structural and magnetic properties of Tb0.3Dy0.35Ho0.35Co2 compound has been studied. Surface topology features, element and phase compositions, temperature dependences of lattices parameters, magnetization, magnetocaloric effects and magnetostriction of these multicomponent alloys have been obtained and analyzed. [..] Read more

Abstract: The paper deals with the aluminum honeycomb that is very successfully used as applications in the transport industry and engineering production. Based upon its ability to absorb the large amount of energy, aluminum honeycomb has also found its utilization as the kinetic energy absorber. [..] Read more

Abstract: The crucible furnaces are mainly used for melting of metals or for keeping the metal in the liquid state. Among other things, an applicable mathematical optimization of the crucible parameters could contribute to reducing the high energy intensity of crucible furnaces. [..] Read more

Abstract: The article presents the research results on acoustic emission (AE) generated by process of friction stir welding of sheets made of AW-5083 aluminum alloy. Nowadays acoustic emission method is used in many fields of science, including in the diagnosis of machining and joining processes such as turning, grinding, milling, welding, etc.Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. [..] Read more

Abstract: In the last 20 years the continuous casting has become a modern production technology of metals including steel, aluminum, and copper. Since cooling patterns and the temperature distribution of cast metal significantly influence quality and productivity of final products, metallurgists utilize computer solidification models which allow them for thermal analysis, monitoring and optimization of cast products. [..] Read more

Abstract: Solid state mixing, such as mechanical alloying (MA), represents technologically reasonable economical processing method how to achieve homogenous distribution of hard particles in composite microstructure. The advantage of working at ambient temperatures, without a process control agent (PCA), opens new route for the preparation of advanced materials. [..] Read more

Abstract: The weldability of advanced heat resistant ODS metallic materials in combination with other materials is a prior requirement for their wider use in industry energy production. A special case is formed by the requirements of the International Thermonuclear Experimental Reactor (ITER) construction, where tungsten alloy needs to be incorporated in weld joint.Due to heating during conventional welding, the microstructure and properties of the resulting weld joints are affected and the joints often become the weakest point of the structure. [..] Read more

Abstract: Thermal treatment of NiTi alloys allows influencing of superelastic behavior through microstructure changes significantly. The appropriate thermal regime is able to move austenite-martensite transformation temperatures. [..] Read more

Abstract: The microstructural stability of fully lamellar γ-TiAl alloy was studied under thermal exposure at 750, 850 and 950 °C for 3400 h. The microstructure analysis shows that the most dominant change in the microstructure was that the α2 lamellae thinned gradually and thinning was more pronounced with increasing temperature and with increasing time. [..] Read more

Abstract: The paper presents the results of physical modelling of 7075 aluminum alloys in T6 state deformation. The tests were performed using STD 812 torsion plastometer. [..] Read more

Abstract: Electric traction is a complex energy supply system for electric locomotives. One of the most important components of this system, to ensure continuous current flow, is a pantograph contact strip. [..] Read more

Abstract: High-temperature tests of the alloys Ni3Al and Ni3Al-Mo were performed under compression. The alloys were tested in as-cast and directionally solidified state at the temperatures of 800 and 1 000 °C. [..] Read more

Abstract: In the field of powder metallurgy, the characteristics of metal powders are necessary for designing technological processes within transport, handling and storage. This paper is focused on the study of three metal powders, CrCNiCr, NiCrBSi, WCCoCr, which are used for the HVOF (High Velocity Oxy-Fuel) technology of high-speed thermal spraying. [..] Read more

Abstract: The purpose of the work has been the evaluation of flow and solidification of AlMg10 alloy during the fill mould cavity in the spiral fluidity test and simulation of graphite particles movement during the filling of mould cavity the composite suspension on AlMg10 alloy matrix. This evaluation has been performed on the basis of computer simulation of the mould cavity filling and the solidification of the casts using by means of the Nova Flow and Solid program. [..] Read more

Abstract: In the paper the differences in the structure of dental alloys have been presented. The observations of the selected commercial dental alloys (Ni-alloy group) structures have revealed the differences in their morphology - depending on the melting and casting conditions. [..] Read more