Open Access Conference Proceedings

Abstract: Iron aluminides are one of the most attractive intermetallics for commercial applications due to their excellent corrosion resistance in combination with high specific strength. Proper design of thermomechanical parameters and precise control of the microstructural evolution are essential for successful processing of these alloys. [..] Read more

Abstract: Deposits of 92/8 at.% Ti/Ni were produced by low-pressure cold spray technique using heated air as working gas. The chemical composition of the 8 mm thick was kept in hypoeutectoid concentration. [..] Read more

Abstract: The connection between metal and ceramic occurs by physical, chemical and in small extent by mechanical forces, special attention is applied to the every stage of metal surface preparation before ceramics application. The paper presents the results of microscopic cross-sections observation of Ni-Cr-Mo coated with opaquer and dental ceramics layers. [..] Read more

Abstract: In the present work the corrosion resistance of candidate lead-free solder alloys in simulated seawater conditions was investigated. Four different alloys were studied: Sn-0.7Cu, Sn-3.5Ag, Sn-0.3Ag-0.7Cu and Sn-3.5Ag-0.7Cu (composition in wt.%). [..] Read more

Abstract: Hot-extrusion of the chips and other highly fragmented materials is a very convenient way for aluminum alloys scarp processing. It is possible to achieve ready or semi-finished products in one step of material forming - directly from the chips to the bulk material. [..] Read more

Abstract: Cobalt-based alloys (e.g. Stellite) are often used on surfaces which are required for the high resistance to abrasion (sealing surfaces of the fittings, etc.). [..] Read more

Abstract: In the last decade, multicomponent alloys arisen as new promising family of materials. The effect of milling parameters, namely milling balls size, milling speed and time on synthesis of inequiatomic AlCoCrFeNiTi0.5 mechanically alloyed (MA) powders in planetary ball mill were studied. [..] Read more

Abstract: Plastic consolidation offers good alternative for traditional scrap recycling, especially for the highly fragmented forms of materials obtained from machining process. In this method aluminum chips were pre-compacted into a form of solid billets and then hot extruded at elevated temperature. [..] Read more

Abstract: This paper reports on the results of a study of the mechanical properties of sinters made of a new iron-based material, which is becoming increasingly popular in the manufacture of diamond impregnated tools as an economical substitute for cobalt and cobalt alloys. The sinters were formed by hot pressing a mixture of iron and bronze powders. [..] Read more

Abstract: Characteristic of standard sacrificial alloys on the base of aluminum is extremely low content of the cathode impurity elements. Due to this requirement, the stable electrochemical parameters and high efficiency of aluminum anodes is not always achieved.Falling characteristics of tread material can be attributed to their passivation - reduction of oxidation of the material of the tread due to the formation of a thick oxide layer on the surface of аnodic protector.This paper presents data as to how to stabilize the electrochemical properties of sacrificial zinc anodic materials that contain aluminum, zinc. [..] Read more

Abstract: The Magnesium alloys play significant role in the weight lowering of the means of transport. The principal difference between forming the magnesium alloys and steel is temperature used by magnesium. [..] Read more

Abstract: The effect of ageing on microstructure and Vickers microhardness of fully lamellar Ti-45Al-5Nb-0.2B-0.75C (at.%) alloy was studied. The experimental procedure for preparation of the studied alloy included induction melting of pure elements, centrifugal casting of cylindrical bars and hot isostatic pressing of the bars to eliminate porosity. [..] Read more

Abstract: Metallic foams are materials with the broad applicability in many different areas of human activity (e.g. automotive industry, building industry, medicine, design, etc.). [..] Read more

Abstract: Intermetallic compounds based on Ti-Al, Ti-Ni, Fe-Al, Ni-Al and other systems require specific conditions during melting in a high-frequency vacuum induction furnace, especially material for melting crucibles and batch arrangement. The technology of casting plays an important role, too. [..] Read more

Abstract: Attempt to determine the heat flow kinetics in insulating moulding sand with aluminosilicate microspheres matrix in order to identify and modify its properties. Destination of moulding sand is pouring thin-walled skeletal casting 3D, characterized by strongly developed surface of heat dissipation and 1.5 ÷ 3 mm predicted connector thickness. [..] Read more

Abstract: The effects of a combined addition of 0.039 % P + 0.015 % Ag as well as a nominal addition of 0.1 % of the de-embrittling elements of copper – B, Mg, Ca, Ti and Zr – to give some variations in contents within the DHP-Cu specification limits on grain size structure at a casting temperature of 1130 °C have been determined and compared to those without the microalloying addition of Ag of 0.015 % obtained at a casting temperature of 1150 °C under TP-1 casting conditions. These results showed that on decreasing the casting temperature from 1150 °C to 1130 °C, the degree of CET increased for DHP-Cu reference with and without microalloying with Ag; the microalloying addition of Ag of 0.015 % to DHP-Cu was essential for grain size control; and that, in comparison to the corresponding DHP-Cu reference cast at 1150 °C and 1130 °C, no further grain refining action was observed due to B, Mg, Ca, Ti and Zr microalloying additions for the conditions studied.. [..] Read more

Abstract: The effect of low-temperature treatment on the structure and hysteretic properties of sintered Nd-Fe-B magnets, which were prepared using strip-casting alloy (wt.%) Nd - 24%, Pr – 6.5%, Dy – 0.5%, B – 1%, Al – 0.2%, Fe – balance and 2 wt.% DyH2 addition, was studied. Hysteretic properties of the magnets subjected to the optimum heat treatment (1-h holding at 500 ˚C followed by quenching in gaseous nitrogen) are Br = 1.29 T, jHc = 1309 kAm-1, Hk = 1220 kAm-1, (BH)max = 322 kJm-3. [..] Read more

Abstract: In times of intensive competition for survival in the market, the enterprises are forced to improve their products in order to satisfy customers. The only method for improving the quality is continuous improvement of all the processes that are used in the enterprise, which is possible only through application of the methods and tools of Total Quality Management. [..] Read more

Abstract: The contribution deals with the influence of non-financial indicators in the economic and financial management in a metallurgical enterprise. By means of practical modelling, it compares traditional statements with materials based on financial indicators interconnected with the Balanced Scorecard method. [..] Read more

Abstract: This article deals with two specific forms of long-term bank loans in the form of mezzanine capital, i.e. participating loans and subordinated loans. [..] Read more