Open Access Conference Proceedings

Abstract: In this paper a new high-entropy alloy from Al-Ti-Co-Ni-Fe system was examined. The alloy was synthesized by arc melting process. [..] Read more

Abstract: Atomized powder of an Al7075 alloy was high energy ball milled at room and cryogenic temperatures and compacted by spark plasma sintering (SPS) method. The influence of processing parameters on phase composition and microstructure was studied by X-ray diffraction, light and scanning electron microscopy. [..] Read more

Abstract: Aluminum and magnesium are young metals in comparison to lead or iron but today commonly used. Their production is constantly growing. [..] Read more

Abstract: Powder metallurgy is widely used in technical practice to manufacture products with specific properties. In the field of ammunition, powder metallurgy technology is used to produce frangible bullets designed for fire arms.This paper presents results of pressing of experimental cylindrical samples from mixture of Fe – Sn metal powders. [..] Read more

Abstract: Metals and their alloys are used in medicine especially for hard tissue replacements where special properties are required (e.g. biocompatibility, low Young’s modulus or corrosion resistance). [..] Read more

Abstract: The aim of this paper was to verify changes in mechanical properties and structural characteristic of the 91W6Ni3Co powders mixture after cold swaging, before which the initial powders were pressed using cold isostatic pressing (CIP) and pre-sintered. Swaging was carried out at room temperature in one pass from the initial diameter of 30 mm to the final diameter of 25 mm. [..] Read more

Abstract: This paper numerically and experimentally describes the influence of cold rotary swaging on a pre-sintered tungsten alloy. The finite element method was applied to describe infeed swaging of 30 mm diameter circular bar with 30% reduction of cross-sectional area. [..] Read more

Abstract: Severe plastic deformation methods preserve dimensions of the material and reduce the grain size down to submicrometer scale. Twin-roll cast strips prepared from AA 3003 aluminum alloy (in wt.%) with 1 % Mn, 0.2 % Fe, 0.5 % Si, 0.2 % Cu and small additions of zirconium (0.2 %) and chromium (0.1 %) were subjected to deformation by Constrained Groove Pressing (CGP). [..] Read more

Abstract: The aim of the study is to determine the effect of metallic nano- and microparticles entered into laminates with the epoxy resin matrix reinforced with fiberglass.The reference analysis showed that research in the field of composites focus on improving strength properties, including fatigue, resistance to impact, thermal and electrical conductivity and combustibility.Most of the tests are carried out in standard laboratory conditions, whereas in reality these materials often work in the most adverse external conditions. The paper presents the results of epoxy resin laminates fatigue studies. [..] Read more

Abstract: Searching light construction capable of carrying concentrated mechanical static load was the fundamental target of undertaken problem. There were presented the numerical simulation results of 3D skeleton casting with regular built of elementary cell. [..] Read more

Abstract: Modern metallurgy has a close collaboration with many other industrial fields and also with gas production industry. Using of hydrogen and nitrogen atmospheres in steel production and rolling show us metallurgy industry in a role of a big consumer of industrial gases. [..] Read more

Abstract: This experiment deals with preparation of Al plus 25 weight % Cu powder mixture. The powders were mixed, compressed using a double-step cold isostatic pressing (CIP) procedure and subsequently sintered in vacuum either at 500 °C or at 550 °C for 60 min. [..] Read more

Abstract: Existing exact knowledge on fatigue crack growth parameters and characteristics is an essential condition for an application of Damage Tolerance design philosophy in dynamically loaded structures. Measurement of fatigue crack growth (FCG) rates in an Al 7175-T7351 alloy of a particularly high homogeneity was carried out as a part of the Proficiency Test Programme organised by Exova in France. [..] Read more

Abstract: This study reports the effect of LaB6 particles on the Al-5 wt.% Si matrix powders and composites in regard of physical, microstructural and mechanical properties. Two different types of LaB6 particles such as laboratory-synthesized (LaB6(S)) and commercial (LaB6(C)) were used as reinforcement materials. [..] Read more

Abstract: In this study, Al-7 wt.% Si powders and composites hybridized with niobium boride powders were prepared by a combined method of mechanical alloying (MA) and pressureless sintering. Niobium boride powders containing NbB-NbB2-Nb3B4 phases were mechano-chemically synthesized (for 5 h) from Nb2O5-B2O3-Mg blends and purified with HCl leaching treatment in our laboratory facilities.Laboratory-synthesized NbB-NbB2-Nb3B4powders were incorporated into the Al - 7 wt.% Si matrix powders with the amount of 2 wt.% via mechanical alloying for different durations (1, 4 and 8 h) in a Spex™ Mixer/Mill using hardened steel vial/balls with a ball-to-powder weight ratio of 7/1. [..] Read more

Abstract: The steel sector plays a very important role for many countries, because of its broad industrial use. However, not all countries have the same factor endowment for steel production and trade. [..] Read more

Abstract: This paper presents a way to assess processes where more quality characteristics are observed. The method used concerns multivariate capability indices supported by graphical methods. [..] Read more

Abstract: Natural resources management is one of the environmental policy priorities in steel industry. In the paper, attention was given to the potential of eco-effectiveness and circular economy concept for supporting decision-making related to the management of natural resources in steel production. [..] Read more

Abstract: Optimal control of reheating furnaces at metallurgical companies encounter difficulties resulting from the unevenness of the material through the furnaces because of their integration into broader technological lines. In terms of finding the optimal heating strategy, the use of the appropriate models of heating appears to be the cheapest approach. [..] Read more

Abstract: Poka-yoke (mistake-proofing) is one of the lean manufacturing methods. It ensures that proper conditions exist before actually executing a process step, preventing mistakes from occurring in the first place. [..] Read more