Open Access Conference Proceedings

Abstract: Creep resistance of austenitic steels can be improved by small additions of strong carbide and nitride forming elements. Additions of such elements to steels have to be followed by detailed investigations on microstructural stability and surveys of creep failure mechanisms.This paper deals with creep behaviour and microstructure evolution in the AISI 316LN + 0.1 wt. [..] Read more

Abstract: In the paper there were presented possibilities of combining metal sheet with metallic foams using a sintering powder mixture in dissociated ammonia. The research were carried out over the properties of sintering powder iron foam, with superalloy HASTELLOY® X, by diffusion joint. [..] Read more

Abstract: The paper deals with degradation of the structural and mechanical parameters of DOMEX 700MC steel due to welding process. It is focused on evaluation of the mechanical heterogeneities influence at higher strain rate. [..] Read more

Abstract: Additive technologies provide engineers with an innovative approach for design and manufacture of parts. The development of additive manufacturing technologies, such as selective laser melting, allows making metal products by melting the powder and obtaining a continuous solid-phase structure. [..] Read more

Abstract: The paper deals with use of small samples for fatigue tests. The main advantage of the small fatigue samples is in use in cases, where sufficient amount of material is not available. [..] Read more

Abstract: Hadfield’s steel has been widely used for railway switch and frogs because of its desirable mechanical behaviour under high load applications. Austenitic Hadfield´s steel containing approx. [..] Read more

Abstract: This paper deals with the impact of solution annealing on the properties of X2CrNiMoN2253 duplex steel. Experimental specimens were 100×100×150 mm forged and air-cooled pieces, which were solution-annealed at several temperatures changed in 20 °C steps between 1020 and 1120 °C.Mechanical tests conducted on these processed specimens included tension tests and Charpy impact tests at room temperature and at -46 °C. [..] Read more

Abstract: The aim of the work is to develop a new method for yield strength determination of chosen corrosion resistant steels using the micro-indentation measurements. The main advantage of such method is a demand for minimal amount of analyzed material. [..] Read more

Abstract: Resistive weldability of high-strength steel 22MnB5 is very important for automotive industry. Coated steel is galvanized. [..] Read more

Abstract: Cellular Automata (CA) model of carbo-nitride precipitation in micro-alloyed steels is presented in the paper. The model accounts for an increase of dislocation density due to plastic deformation and predicts kinetics of precipitation as well as stereological parameters of precipitates. [..] Read more

Abstract: One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. During finish treatment the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. [..] Read more

Abstract: The article presents the research results on the mechanical properties of aluminium alloy 5083 – the most currently used in shipbuilding aluminium alloy and its friction stir welded (FSW) joints. Influence of different welding parameters and kinds of welding tools used for the connection of the sheets made of 5083 alloy on quality of the joint were presented. [..] Read more

Abstract: The presented paper deals with hydrogen diffusion and hydrogen provoked degradation in the TRIP 800 Mn-Si-Al steel with increased aluminum content. The steel was studied after standard heat treatment including two step annealing – an intercritical annealing and an annealing in the range of bainitic transformation. [..] Read more

Abstract: Electrical steel M470-50A belongs to the most often used materials in electrical machines. Due to this fact, it is desirable to know the magnetic parameters after processing raw sheets into the required shape. [..] Read more

Abstract: We have investigated structure and phase composition of surface layer of tram rails after long time running and the results were compared with those obtained on the original part of material. Changes due to effects of severe plastic deformation together with thermal shocks by friction process were expected. [..] Read more

Abstract: The aim of the study was to determine the corrosion resistance of the plastically deformed and heat treated aluminized steel samples. It was the non-standard study, but the most important conditions have been taken from the standards. [..] Read more

Abstract: The article presents the results of computer quantitative analysis of the microstructure of ductile cast iron heat treated with isothermal transformation. To determine the relative volume fraction of austenite and the geometric parameters of ferrite needles the methods of image analysis were used. [..] Read more

Abstract: High alloyed materials are required by certain industrial sectors as is power, chemical and nuclear industry, etc. These materials have superior mechanical properties and are resistant to chemically aggressive environment in which it must accommodate the long term mechanical stresses at high temperatures. [..] Read more

Abstract: The results of the X-ray diffraction analysis of the pearlitic - ferritic ductile iron with the addition of Ni are presented. The cast iron was heat treated by austenitizing with the following austempering carried out under different conditions. [..] Read more

Abstract: The article deals with the evaluation of residual stress after machining of surfaces using effective milling strategies programmed by CAM systems. Milling of the shaped parts containing pockets and grooves, the cutting tool must be driven into corners with lower feed rate, because angle of entry, cutting depth increase and then a chip is tamped and leaving from the place of cut is very difficult. [..] Read more