Open Access Conference Proceedings

Abstract: This report shows first investigation of microstructure development and its effect on mechanical strength and corrosion resistance of non-commercial magnesium alloy WN43 processed extrusion (Ex) and equal-channel angular pressing (ECAP). Bimodal grain size distribution with high volume fraction of ultra-fine grains about 650 nm in diameter was achieved after 4 passes through ECAP. [..] Read more

Abstract: Ultra-fine grained (UFG) materials are in the spotlight because of their enhanced mechanical properties. UFG material can be prepared by bottom-up process consisting of agglomeration of nano-particles or by top-down process of severe plastic deformation (SPD) In this study, Ti Grade 2 powder underwent attritor milling in liquid nitrogen (LN) and argon (LAr) and was consequently consolidated via spark plasma sintering (SPS). [..] Read more

Abstract: During the last decades there is continuous tendency to lower the weight of cars and thus automotive industry is trying to find other metal (or e.g. plastic) materials suitable to produce lighter car-bodies. [..] Read more

Abstract: Recently developed metastable alloy Ti–35.3Nb–7.3Zr–5.7Ta–0.7O (wt.%) abbreviated TNZTO is unique in its high oxygen content and exhibits promising properties for successful use in biomedicine, namely for total endoprostheses and bone fixation. As-cast material is not fully homogeneous; it shows dendritic structure and high density of micro-sized pores. [..] Read more

Abstract: Nickel-rich part of ternary system Ni-Al-Cr is crucial for currently used nickel superalloys and alloys based on intermetallic phase Ni3Al. Those materials are dedicated to work at elevated temperature and consist, among others, of ordered phase γ′ and disordered phase γ in different proportions. [..] Read more

Abstract: Ni3Al based alloys in the as-cast state and directionally solidified were used for tests in compression at higher temperatures. The alloys were prepared by vacuum induction melting. [..] Read more

Abstract: Lithium is a commodity undergoing through significant expansion recently. At present, lithium accumulators and batteries rank among very promising means for long-term accumulation of electricity. [..] Read more

Abstract: Microstructure and mechanical response of joints of titanium and AISI 304 stainless steel performed using copper foil as an interlayer was evaluated in the study. The process was carried out in vacuum in the temperature range of 850 to 900 C for 60 min. [..] Read more

Abstract: This paper discusses experimental results concerning the geometric accuracy of cylindrical holes made in EN AW-2007 aluminum alloy by a high-pressure jet of water containing almandine garnet as an abrasive substance. The tests were conducted according to a three-level Box-Behnken design using an APW 2010BB water jet cutting machine. [..] Read more

Abstract: The spent auto catalytic converters are a valuable source of platinum group metals (PGM metals), such as platinum, palladium and rhodium. There are two main types of structures used in construction of catalytic converters –ceramic or metallic carrier. [..] Read more

Abstract: The dynamic superplasticity of aluminum alloys is considered from the point of view of the nonequilibrium phase transition theory. The macrokinetic analysis of superplastic deformation mechanisms is carried out on the basis of the model representing stress, temperature and kinematic characteristics relationship, with energy function of the state being considered in the form of assembly catastrophe potential. [..] Read more

Abstract: This paper presents the results of epoxy laminate composites examinations. Laminates were reinforced with glass fiber STR 026-450-125 and also were modified using metallic powders with different granulations and content. [..] Read more

Abstract: In present investigation diffusion bonded joints between titanium (Grade 2) and stainless steel (X5CrNi18-10) using 120 μm thick aluminum foil as a filler metal were produced at 600 °C for 60 minutes under: 2, 4, 6 and 8 MPa pressure in vacuum. The microstructure was investigated using light optical microscopy and scanning electron microscopy equipped with an energy dispersive X-ray system (EDS) to determine chemical composition of the joint. [..] Read more

Abstract: A surface layer enriched with zinc was formed on magnesium by heating specimens painted with a paste containing ZnCl2+KCl at 440 °C for 120 min using no protective atmosphere. The study focused on the microstructure, phase constitution and microhardness of the alloyed layer. [..] Read more

Abstract: Study of structural and mechanical properties of metal powders is necessary for improving in powder metallurgy. The procedural behavior of aluminum, copper and iron powders and their alloys is important for many industrial applications. [..] Read more

Abstract: Twinning is an important deformation mode in materials with the hexagonal close-packed (hcp) structures. The shear deformation combined with shuffling of atomic planes can lead to a transition between the Mg hcp structure and a twinned hcp structure. [..] Read more

Abstract: In the course of homogenizing annealing of aluminum alloys being cast continually or semi-continually it appears that chemical inhomogeneity takes off within separate dendritic cells (crystal segregation). It is about a diffusional process that takes place at the temperature which approaches the liquid temperature of the material. [..] Read more

Abstract: In the work the mechanism of the equilibrium and non-equilibrium crystallization of the alloys in the ternary system with the monovariant eutectic equilibrium has been investigated. New peculiarities of the equilibrium crystallization of the binary eutectics in the ternary systems have been found out. [..] Read more

Abstract: Alloyed layers enriched with Zn and Al were fabricated on an Mg substrate using the powder-pack method. The Mg specimens were first immersed in Zn+Al powder mixtures serving as the source of diffusion elements and then heated at 440 °C for 60 min. [..] Read more

Abstract: These days are more and more posing claims for the highest quality of castings from the aluminum alloys and for the lowest weight of these castings. These requirements force producers of such castings to utilize materials properties as much as possible. [..] Read more