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Conference Proceedings - METAL 2025
34th International Conference on Metallurgy and Materials
May 21 - 23, 2025 / Orea Congress Hotel Brno, Czech Republic, EU
www.metalconference.eu
ISSN: 2694-9296
ISBN: 978-80-88365-27-3
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CHABIČOVSKÝ Martin VUT – Brno University of Technology, Brno, Czech Republic, EU, martin.chabicovsky@vut.cz
Co-authors:
KOTRBÁČEK Petr
TUROŇOVÁ Petra
Abstract:
With rising energy costs, efficient and accurate heating of the charge to rolling temperature is critical to reducing operating costs and improving the quality of the finished product. The surface temperature of the charge obtained from non-contact measurements after exiting the furnace does not provide information about the internal temperature of the charge, nor does it reveal the temperature profile prior to exiting the furnace. [..]
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KOMINEK Jan BUT – Brno University of Technology, Faculty of mechanical engineering, Brno, Czech Republic, EU, jan.kominek@vut.cz
Co-authors:
KOTRBACEK Petr
ADRIAEN Pepjin
Abstract:
This study presents the experimental investigation of Heat Transfer Coefficient (HTC) distributions conducted within the framework of the European RFCS SmartCool project. The SmartCool project focuses on the development and implementation of a smart-controlled actuator system designed to homogenize the temperature distribution across the width of the transfer bar in hot strip mills. [..]
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MOSKOVCHENKO Alexey New Technologies-Research Centre, University of West Bohemia, Pilsen, Czech Republic, EU alexeym@ntc.zcu.cz, msvantne@ntc.zcu.cz
Co-authors:
ŠVANTNER Michal
Abstract:
Induction thermography is a well-established method for detecting and analysing cracks in metal products, such as rails. However, quantifying defects, particularly those with complex geometries, remains a challenging and intricate task. [..]
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MICHAEL SOLOMON Isaac Samuel Kaunas University of Technology, MIDF, Kaunas, Lithuania, EU, isaac.michael@ktu.edu, gintautas.dundulis@ktu.lt
Co-authors:
LO FRANO Rosa
DUNDULIS Gintautas
Abstract:
This study investigates the influence of cracks, of semi-elliptical shape according to ASME III rules, which is assumed be located near the pipe region where tensile stress is expected. The investigation refers to pipe whip conditions. [..]
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HAMRYSZCZAK Tomasz AGH University of Krakow, Krakow, Poland, EU, tomasz.hamryszczak@agh.edu.pl
Co-authors:
ŚLEBODA Tomasz
Abstract:
High-strength, low-alloy (HSLA) steels, although known for years, are not very popular in the industry. Controlled thermo-mechanical rolling poses significant challenges for process engineers and is only feasible in a few rolling mills worldwide. [..]
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KOTAN Hasan Bursa Technical University, Department of Metallurgical and Materials Engineering, Bursa, Türkiye, hasan.kotan@btu.edu.tr
Co-authors:
KOÇ Recep C.
Abstract:
Although high entropy alloys (HEAs) have captured significant attention over the years, the nanocrystalline microstructure of HEAs, similar to that of conventional alloys, is unstable against grain growth. Our initial experimental results have revealed that the hardness of nanocrystalline CoCrFeNi HEA, measured as 517.8 ± 25 HV, decreased substantially to 221.5 ± 11 HV after 1 h of annealing at 1100 °C, and continued to decrease with prolonged annealing, reaching 184 ± 6.4 HV as the annealing time was extended. [..]
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JANULIONIS Remigijus Lithuanian Energy Institute, Breslaujos str. 3, LT-44403, Kaunas, Lithuania, EU, remigijus.janulionis@lei.lt
Co-authors:
DUNDULIS Gintautas
ŠEPORAITIS Marijus
Abstract:
The frames of tank semi-trailers are usually made of carbon steel. However, this steel is susceptible to corrosion. [..]
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MAVHUNGU Steven Metal Casting technology Station, University of Johannesburg, South Africa, stmavhungu@uj.ac.za
Co-authors:
MAKHATHA Mamookho Elizabeth
Abstract:
The aim of this research was to study the effect of Nickel additions to high strength steel alloys and to obtain an optimal chemical composition that does not compromise the tensile strength and wear resistance properties provided by the OEM (Original equipment manufacturer) with cost saving to the manufacturing local foundry. The nickel content was added in composition from 0.5 wt% to 3.5 wt% to the molten metal. [..]
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KHAZALI Mohammad S. Al Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic, EU, mohammad.sami.al.khazali@vutbr.cz
Co-authors:
MIARKA Petr
MALÍKOVÁ Lucie
SEITL Stanislav
Abstract:
Although high-strength structural steels deliver excellent strength-to-weight ratios, their fatigue reliability drops sharply once corrosion pits develop. In this study, S460 specimens were corroded in controlled salt spray cycles. [..]
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BAŁAGA Zbigniew Czestochowa University of Technology, Czestochowa, Poland, EU, zbigniew.balaga@pcz.pl
Co-authors:
OPYDO Michał
DUDEK Agata
Abstract:
This paper presents the results of a failure analysis of a suspension spring from a passenger vehicle, with a focus on the impact of long-term operation under real road conditions. The investigated spring, originating from a 2008 Peugeot vehicle, failed after 14 years of service and approximately 225,000 km of mileage. [..]
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DLOUHÝ Jaromír COMTES FHT a.s., Průmyslová 995, 334 41, Czech Republic, EU, jdlouhy@comtesfht.cz
Co-authors:
MOTYČKA Petr
MAŠEK Bohuslav
NOVÝ Zbyšek
Abstract:
The QP process enables to achieve excellent combination of strength and ductility in low alloyed steels. However, the process itself is rather difficult to implement into a serial production of high strength parts as it is demanding precisely controlled temperature cycle for each part. [..]
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DULIŠKOVIČ Josef Research and Testing Institute Plzen Ltd., Pilsen, Czech Republic, EU, duliskovic@vzu.cz, jirkova@vzu.cz, kasl@vzu.cz
Co-authors:
JIRKOVÁ Hana
KASL Josef
Abstract:
The growing concern for environmental sustainability in industrial processes has led to the development of an environmentally friendly electrolyte for hydrogen embrittlement testing of steels. In this study, a new electrolyte composed of sodium dihydrogen phosphate (NaH2PO4), disodium hydrogen phosphate (Na2HPO4), L-cysteine (C3H7NO2S), and citric acid (C6H8O7) was tested as an alternative to the conventional 0.5 N sulfuric acid (H2SO4) electrolyte combined with thiourea (CH4N2S). [..]
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GĄDEK-MOSZCZAK Aneta Cracow University of Technology, Cracow, Poland, EU, aneta.gadek-moszczak@pk.edu.pl
Abstract:
Digital image analysis in the study of geometric structures of machine parts and engineering materials is a complex issue that the author tries to systematize and generalize, treating it as a process. The article proposes a comprehensive approach independent of the observation scale, material type, and purpose of analysis. [..]
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HRABOVSKÁ Kamila VSB - Technical University of Ostrava, Department of Physics, Ostrava, Czech Republic, EU, kamila.hrabovska@vsb.cz, ondrej.zivotsky@vsb.cz, lucie.gembalova@vsb.cz
Co-authors:
ŽIVOTSKÝ Ondřej
GEMBALOVÁ Lucie
SLEZÁK Martin
VÁŇOVÁ Petra
MATÝSEK Dalibor
RUSZ Stanislav
PALČEK Peter
Abstract:
The study is focused on changes in the structural and physical properties of AISI 304 austenitic stainless steel subjected to severe plastic deformation at room temperature. The steel was deformed using two methods: applying compressive forces of 100 kN and 150 kN and using the Dual Rolling Equal Channel Extrusion (DRECE) technique. [..]
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KANDER Jan MATERIÁLOVÝ A METALURGICKÝ VÝZKUM, Ostrava, Czech Republic, EU, jan.kander@mmvyzkum.cz
Co-authors:
ČÍŽEK Petr
ROŽNOVSKÁ Gabriela
JONŠTA Petr
Abstract:
The European Union is committed to replacing natural gas with hydrogen by 2050 as part of its search for clean and sustainable energy sources. Given these goals, it is crucial to examine the materials used in current gas infrastructure and assess their susceptibility to hydrogen embrittlement, a common form of material degradation induced by hydrogen. [..]
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KOZINA Franjo University of Zagreb Faculty of Metallurgy, Sisak, Croatia, EU, fkozin@simet.hr, zovko@simet.hr
Co-authors:
ZOVKO BRODARAC Zdenka
PETRIČ Mitja
BURJA Jaka
Abstract:
The goal of this review is to examine the possible use of ex-post quantitative fractography in development of aircraft design concepts. The resent investigations using quantitative fractography for the reconstitution of fatigue process history indicated limitations of fatigue crack growth and material toughness-based tests in interpreting fatigue behaviour. [..]
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KUBOŇ Zdeněk 1MATERIALS AND METALLURGICAL RESEARCH s.r.o., Ostrava, Czech Republic, EU, creep.lab@mmvyzkum.cz
Co-authors:
JANČÍKOVÁ Helena
ROŽNOVSKÁ Gabriela
Abstract:
The article describes the corrosion attack and premature damage in stainless steel drinking water piping installed in a hospital. After only two years of service, intensive pitting and crevice corrosion was observed near welded joints, resulting in wall perforation. [..]
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MARUŠÁKOVÁ Daniela CVŘ – Centrum Výzkumu Řež, Hlavní 130, Husinec-Řež, 250 64, Czech Republic, EU, daniela.marusakova@cvrez.cz
Co-authors:
FUKAČ Rostislav
MELICHAR Tomáš
VÍT Jan
Abstract:
A characteristic feature of advanced energy devices, such as Generation IV nuclear reactors, is operation combining high temperatures and pressures of working media. One of the key issues is ensuring the tightness of joints of metal components at very high temperatures (above 600 °C). [..]
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NOVÁK Dalibor VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU, dalibor.novak@vsb.cz
Co-authors:
ŘEHÁČKOVÁ Lenka
NOVÁK Vlastimil
MATÝSEK Dalibor
KAWULOKOVÁ Monika
SMETANA Bedřich
Abstract:
Chromium low alloy steels exhibit a favourable balance of enhanced corrosion resistance and mechanical strength, characteristics that are critically beneficial for a wide array of structural applications. The distinct properties of these materials, in conjunction with their cost-effectiveness, render low-alloy chromium steels particularly advantageous across numerous industries without compromising safety or performance. [..]
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RADEV Rossen University of Ruse, Ruse, Bulgaria, EU, rradev@uni-ruse.bg, dgospodinov@uni-ruse.bg, mdilieva@uni-ruse.bg, nferdinandov@uni-ruse.bg, iivanov@uni-ruse.bg
Co-authors:
GOSPODINOV Danail
ILIEVA Mariana
FERDINANDOV Nikolay
DRAGANOV Ivo
Abstract:
One of the major benefits of low-carbon steels is their cost-effectiveness which makes them a preferable choice for a wide range of applications. In this study mechanical behaviour of mild low-carbon steels is investigated, especially the change of yield strength and tensile strength after plastic deformation and a specific type of heat treatment - firing of enamelled steels.Furthermore, the present work includes investigations about opportunities for computer simulations and prediction of changes in mechanical properties. [..]
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