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Conference Proceedings - METAL 2015
24th International Conference on Metallurgy and Materials
June 3rd - 5th 2015 / Hotel Voronez I, Brno, Czech Republic, EU
www.metalconference.eu
ISSN: 2694-9296
ISBN: 978-80-87294-58-1
Proceedings of the conference were published in Web of Science and Scopus.
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DOMAŃSKI Tomasz Institute of Mechanics and Machine Design, Czestochowa University of Technology Czstochowa, Poland, EU, domanski@imipkm.pcz.p
Co-authors:
BOKOTA Adam
PIEKARSKA Wiesława
KUBIAK Marcin
Abstract:
In work the presented numerical models of steel hardening processes take into account thermal, mechanical phenomena and phase transformations. In the model of phase transformations, in simulations heating process continuous heating was applied, whereas in cooling process continuous cooling of the steel at issue. [..]
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ELIÁŠOVÁ Ivana ÚJV ež, a. s., Husinec, Czech Republic, EU, ivana.eliasova@ujv.cz, michal.falcnik@ujv.cz, radim.kopriva@ujv.cz
Co-authors:
FALCNÍK Michal
KOPŘIVA Radim
Abstract:
Monitoring the mechanical properties changes is very important to assure structural integrity of NPP components, especially within the context of their operational life extension. Determination of current mechanical properties of several structural materials of NPP components, especially reactor internals, is not possible using the standard testing methods, in connection with the material volume necessary for the testing. [..]
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Gawrońska Elżbieta Czestochowa University of Technology, Czestochowa, Poland, EU, elzbieta.gawronska@icis.pcz.pl, winczek@gmail.com
Co-authors:
Winczek Jerzy
Abstract:
The paper presents the calculations of temperature field, volume fractions of structural components and strains during multipass GMAW surfacing of a prismatic element made of S235 steel. The bimodal heat source model is used in the description of temperature field. [..]
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GHERA Cristian „Polytechnica“ Universty of Timisoara, Timisoara, Romania, EU cghera@yahoo.com, ion.mitelea@upt.ro, ilarica59@gmail.com, craciunescucm@yahoo.com
Co-authors:
MITELEA Ion
BORDEAŞU Ilare
CRĂCIUNESCU Corneliu
Abstract:
This paper analyses the effect of work hardening on the behaviour to cavitation erosion for the low alloyed steel 16MnCr5.Cavitation tests were conducted on a vibrator device with piezoceramic crystals, which fully complies with the requirements imposed by the ASTM G32 – 2010.The evaluation of behaviour at cavitation erosion was made based on curves gradient of hardness on the section of layer hardened by cold plastic deformation, as well as the variation curves of cavitation parameters MDE (depth of penetration of erosion) and MDER (penetration rate of erosion) with the duration of test. The topography of surfaces damaged by cavitation and the structural changes resulting in marginal layer were analysed with light microscopy and scanning electron microscope, they justified the significant increases of resistance to cavitation erosion.. [..]
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GÓRECKI Kamil. AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Physical & Powder Metallurgy, Mickiewicza Av. 30, 30-059 Krakow, Poland, EU, kgorecki@agh.edu.pl
Co-authors:
CIOS Grzegorz
STĘPIEŃ Milena
MARZEC Mateusz
WIECZERZAK Krzysztof
Abstract:
Pitting is a type of fatigue wear of the material subjected to cyclic loading, especially occurring in the gears or bearings. Si-DLC coatings are currently used due to their excellent properties such as low friction coefficient, high hardness, and wear resistance. [..]
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HAVELKA Lukáš VSB - Technical University of Ostrava - Faculty of Mechanical Engineering, Ostrava, Czech Republic, lukas.havelka.st1@vsb.cz
Co-authors:
MOHYLA Petr
VONTOROVÁ Jiřina
Abstract:
This article deals with the new results from measurement of mechanical properties of P92 welded joints. Tested specimens (welded joints of P92 steel) were prepared using GTAW technology (141). [..]
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IVANOV Sergei The Peter the Great St.Petersburg Polytechnic University, Russia
Co-authors:
KARKHIN Victor
PANCHENKO Oleg
MICHAILOV Vesselin
Abstract:
Effects of weld path curvature on microstructure and mechanical properties of structured sheet arc welded joints are studied. Solution of the direct heat conduction problem is obtained by the Green's function method. [..]
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JURASZ Zbigniew BOSMAL Automotive Research & Development Institute Ltd., Bielsko-Biala, Poland zbigniew.jurasz@bosmal.com.pl, krzysztof.adamaszek@bosmal.com.pl
Co-authors:
ADAMASZEK Krzysztof
Abstract:
The corrosion behavior of four grades of valves steels i.e. X33CrNiMn23-8, X50CrMnNiNbN21-9, X33CrNiMnN23-8, X50CrMnNiNbN21-8, X53CrMnNiN20-8 and X55CrMnNiN20-8 in combustion gases
of petrol with different of ethanol volume percentage has been studied. [..]
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Káňa Josef University of West Bohemia, Faculty of Mechanical Engineering, Pilsen, Czech Republic, EU
Co-authors:
JENÍČEK Štěpán
MAŠEK Bohuslav
Abstract:
It is a common practice to use automated software tools to identify material properties values in dataset recorded during the tensile tests. Our work is a comparative study how different numerical algorithms affect resulting material properties values. [..]
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KANDER Ladislav MATERIAL AND METALLURGICAL RESEARCH Ltd., Ostrava, Czech Republic, EU, ladislav.kander@mmvyzkum.cz
Co-authors:
KORCAKOVA Leona
Abstract:
The Danish coal-fired Ultra Super Critical (USC) plant, Nordjyllandsværket has now reached 100.000 hours of operation. Taking advantage of the boiler maintenance programme, tube sections were removed from more than 20 different locations in the boiler during the 2012 summer shutdown to assess the materials conditions of the boiler. [..]
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KOCZURKIEWICZ Bartosz Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Czestochowa, Poland, EU
Co-authors:
DYJA Henryk
NIEWIELSKI Grzegorz
Abstract:
The high carbon steel rods are designed for the manufacture of wire on the rope and steel cords. They are produced in continuous rolling mills with accelerated cooling device. [..]
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KOLNEROVÁ Michaela TUL-Technical University of Liberec, Faculty of Mechanical Engineering, Liberec, Czech Republic, EU, michaela.kolnerova@tul.cz, jiri.sobotka@tul.cz, pavel.solfronk@tul.cz, lukas.zuzanek@tul.cz
Co-authors:
SOBOTKA Jiří
SOLFRONK Pavel
ZUZÁNEK Lukáš
Abstract:
Formed parts of the car-body represent cyclic loaded products. For the proper design of these parts is very important not only knowledge of deformation and stress material behavior at production by forming technologies but important is also knowledge of other factors which influence subsequent product utility properties at the car operation. [..]
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KONOPÍK Pavel COMTES FHT a.s., Průmyslová 955, 334 41 Dobřany, Czech Republic, EU
Co-authors:
DŽUGAN Jan
RUND Martin
Abstract:
The residual lifetime assessment and the risk of a possible service components failure are critical issues in the safety and reliability analyses of industrial plants. The residual lifetime can be evaluated by the standard mechanical test techniques, such as the tensile test, uniaxial creep test, the Charpy or the fracture toughness test. [..]
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KOSNO Łukasz Kielce University of Technology, Kielce, Poland, EU, lkosno@tu.kielce.pl, gswit@tu.kielce.pl
Co-authors:
ŚWIT Grzegorz
Abstract:
The paper below presents the results of studies of the flexible SuperCor SC-57S structure built by Polish manufacturer ‘ViaCon Polska Sp. z o.o.’ at their test site in Rydzyna. [..]
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HLAVAC Libor M. VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU
Co-authors:
SPADŁO Sławomir
KRAJCARZ Daniel
HLAVACOVA Irena M.
Abstract:
In this study, the effect of different traverse speed of abrasive water jet (AWJ) on HARDOX 400 steel was experimentally investigated. In the experiment five different traverse speeds of 20, 40, 60, 80 and 100 mm/min were used. [..]
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Král Lubomír Institute of Physics of Materials of the CAS, Brno, Czech Republic, EU
Co-authors:
Čermák Jiří
Král Petr
Abstract:
Phase composition of the steel P91 during annealing was studied with the aim to reveal the evolution of new phases. In this paper, the precipitation was characterized using energy-dispersive X-ray spectroscopy (EDS) and electron diffraction in transmission microscopy (TEM). [..]
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Piekarska Wiesława Czestochowa University of Technology, Institute of Mechanics and Machine Design Foundations, Czestochowa, Poland, EU, piekarska@imipkm.pcz.pl
Co-authors:
Saternus Zbigniew
Kubiak Marcin
Domański Tomasz
Abstract:
This work concerns numerical simulations of thermomechanical phenomena in laser butt-welding of sheets made of X5CrNi18-10 steel. Abaqus FEA software is used in calculations taking into account phase transformations during material’s state changes and temperature dependent thermomechanical properties of analysed steel. [..]
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KUBOŇ Zdeněk Material and Metallurgical Research, Ostrava, Czech Republic, EU
Co-authors:
ROŽNOVSKÁ Gabriela
KOSŇOVSKÁ Jana
PEKAŘOVÁ Lenka
Abstract:
A creep damaged area was found during the routine control of the steam pipeline bend of 200 MW fossil-fuelled power plant boiler close to the outer fibre and near the top of the bend. The damaged area with identified creep cracks was about 250 x 600 mm in size and the maximum depth of the cracks was 7 mm. [..]
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KUFA Jan MATERIALS AND METALLURGICAL RESEARCH Ltd., Ostrava, Czech Republic, jan.kufa@mmvyzkum.cz
Abstract:
This article presents a method for software assessing the level of axial segregation in wire rod. This so-called axial segregation is routinely determined visually as dark spots on the etched cross-section of wire, which classifies comparison to a etalon. [..]
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LIPIŃSKI Tomasz University of W armia and Mazury in Olsztyn, Olsztyn, Poland, EU, tomasz.lipinski@uwm.edu.pl, anna.wach@uwm.edu.pl
Co-authors:
WACH Anna
Abstract:
Steel is the most popular structural material. The properties and practical applications of all constructional materials, including steel, are determined mostly by their structure. [..]
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