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ZEMKOVÁ Mária Department of Physics of Materials, Charles University, Prague, Czech Republic, EU, e-mail: 1zemkova.maria1@gmail.com
Co-authors:
DROZDENKO Daria
BOHLEN Jan
MINÁRIK Peter
Abstract:
Intensive efforts have been recently made for a production and a processing of Mg-based light structural alloys, which would provide a utilization in the automotive and aerospace engineering, medical implants and equipment, power generation system, etc. In this study, three magnesium alloys containing neodymium and/or yttrium were investigated in an extruded condition. [..]
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YANKOV Emil University of Ruse “A. Kanchev”, Department of Material Science and Technology, Bulgaria, EU, e-mail: eyankov@uni-ruse.bg
Co-authors:
NIKOLOVA Maria P.
PETROV Petar
ZAHARIEVA Vanya
VALKOV Stefan
ORMANOVA Maria
Abstract:
The improvement of the tribological behavior of the titanium alloys used for hard implants requires the application of different treatments (heat treatment and electron beam surface modification (EBSM) by scanning electron beam) that homogenize the bulk and surface structure as compared with the as-received material. In view of analyzing the influence of the applied vacuum heat treatment on Vickers hardness in three mutually perpendicular planes of the Ti5Al4V samples in as-received, quenched and quenched and precipitated condition are used for determining the plane for scratch test analysis and application of the EBSM afterward. [..]
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NIKOLOVA Maria P. University of Ruse “A. Kanchev”, Faculty of Mechanical and Manufacturing Engineering, Ruse, Bulgaria, EU, e-mail: mpnikolova@uni-ruse.bg
Co-authors:
YANKOV Emil
PETROV Petar
VALKOV Stefan
ORMANOVA Maria
ZAHARIEVA Vanya
TONEV Danko
ANDREEVA Andreana
Abstract:
Obtaining of an appropriate implant material requires a detailed analysis of the effect of the applied surface treatments. In the particular study, the Ti5Al4V alloy was vacuum heat treated and electron beam surface modified (EBSM) by scanning electron beam and its surface characteristics were revealed by modern topographic and metallographic analysis. [..]
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ALTIN Abdullah Van Vocational School of Higher Education, Yuzuncu Yıl University, 65100 Van, Turkey, aaltin@yyu.edu.tr
Abstract:
In this paper were determined the effects of cutting speed, cutting tool and feed rate on cutting forces and surface roughness based on Taguchi experimental design. The effects of machining parameters were investigated using Taguchi L18 orthogonal array. [..]
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SATERNUS Mariola Silesian University of Technology, Gliwice, Poland, EU
Co-authors:
WILLNER Joanna
FORNALCZYK Agnieszka
ŚWIĘCICKA Zofia
Abstract:
From year to year the demand for rare earth metals is constantly growing. Majority of these metals find application in permanent magnets, lamp phosphors, catalyst and rechargeable batteries. [..]
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YENER Tuba Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, 54187, Sakarya, Turkey
Co-authors:
YENER Suayb Cagri
IPEK Mediha
EFE CELEBI Gozde F.
ALTINSOY Ibrahim
ZEYTIN Sakin
BINDAL Cuma
Abstract:
The present paper describes producing alumina ceramic matrix composites reinforced with nickel at ratios of 1 % to 7 % by weight and their resultant mechanical and electromagnetic properties. In this study powder metallurgy method was used and samples obtained at 1440 °C for 1 h in graphite powder. [..]
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Ipek Mediha Sakarya University, Engineering Faculty, Department of Metallurgy and Materials Engineering, Esentepe Campus, 54187, Adapazari, Sakarya, Turkey, tcerezci@sakarya.edu.tr
Co-authors:
Yener Tuba
Zeytin Sakin
Abstract:
In this study, it was investigated fabrication of high entropy alloy containing 25 wt.% Fe, 25 wt.% Co, 25 wt.% Cr, 15 wt.% Ni, 10 wt.% Al via Electric Current Activated (Assisted) Sintering (ECAS) process and effect of heat treatment (annealing) on sintering samples. Heat treatments were performed in open atmospheric furnace at 900, 1000 °C for 10 hours. [..]
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FEITOSA Leandro University of Leicester, Department of Engineering, Leicester, England, United Kingdom, EU
Co-authors:
ALLEN Adam
DOUGLAS Andrew
QIAN Huan
DONG Hongbiao
Abstract:
Niobium silicide based alloys with composition Nb-18Si-24Ti-5Cr-5Al-2Mo were prepared via laser additive manufacturing and analyzed with back-scattered scanning electron microscope and energy-dispersive X-ray spectroscopy in order to evaluate the solidification sequence during freezing and the microstructure evolution during post heat treatment process. Following primary formation of Nb5Si3, and eutectic reaction L Nb5Si3 + Nbss, takes place and Nb3Si phase is suppressed, deviating from the equilibrium predictions. [..]
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KUMAR Pravir Indian Institute of Technology (ISM), Department of Mechanical Engineering, Dhanbad – 826004, India
Co-authors:
KUJUR Milli Suchita
MALLICK Ashis
TUN Khin Sandar
GUPTA Manoj
Abstract:
In this work, Mg-3 % Al alloy was reinforced by graphene nano-plates using powder metallurgy technique including microwave sintering and hot extrusion. Graphene nano-plates were synthesised using modified Hummer’s method. [..]
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STEINLECHNER Stefan Chair of Nonferrous Metallurgy, Montanuniversität, Franz-Josef-Str. 18, 8700 Leoben, AUSTRIA, stefan.steinlechner@unileoben.ac.at
Abstract:
In the past the treatment of industrial residues from copper, lead or zinc industry focused in the majority of cases only on the recovery of one target metal. Mostly it is the focal metal produced in the industry the residue arises from. [..]
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NOVÁK Pavel University of Chemistry and Technology, Prague, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague, Czech Republic; panovak@vscht.cz
Co-authors:
Průša Filip
Jaworska Lucyna
Abstract:
Nowadays, powder metallurgy (PM) is used in many industrial applications. Conventional PM processes, such as cold pressing and sintering are used frequently in series production due to nearly waste-free use of initial materials and limited or no requirements on further processing by machining. [..]
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JURKIEWICZ Bartosz AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Cracow, Poland, EU email: bartoszjurkiewiczagh@gmail.com
Co-authors:
SMYRAK Beata
KNYCH Tadeusz
MAMALA Andrzej
NOWAK Andrzej
KORZEŃ Kinga
ZASADZIŃSKA Małgorzata
GNIEŁCZYK Marek
KOWAL Radosław
Abstract:
The subject of the paper concerns fatigue strength tests of aluminum and copper wires in different state of strain hardening used in overhead power lines and railway power lines. The paper attempts to describe operating problems, especially fatigue strength, research methodology, description of a research stand. [..]
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Frkáň Martin University of Žilina, Department of Materials Engineering, Žilina, Slovakia, martin.frkan@fstroj.uniza.sk, radomila.konecna@fstroj.uniza.sk
Co-authors:
Konečná Radomila
Nicoletto Gianni
Abstract:
Direct Metal Laser Sintering (DMLS), one of Additive Manufacturing technologies, produces layer-by-layer geometrically complex components from metal powders, such as nickel alloys, titanium alloys, aluminum alloys, etc. using a high power concentrated laser beam. [..]
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DVORSKÝ Drahomír Faculty of chemical technology, Department of metals and corrosion engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Praha 6 – Dejvice, Czech Republic, e-mail: dvorskyd@vscht.cz
Co-authors:
KUBÁSEK Jiří
VOJTĚCH Dalibor
VAVŘÍK Jaroslav
Abstract:
Magnesium alloys are utilized in the aviation and automotive industry for their low density and good mechanical properties. Magnesium alloys are also interesting for use in the field of biodegradable implants because magnesium is biocompatible element essential for human body. [..]
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ZENGIN Huseyin Karabuk University, Department of Metallurgy and Materials Engineering, Karabuk, Turkey, e-mail: huseyinzengin@karabuk.edu.tr
Co-authors:
TUREN Yunus
AHLATCI Hayrettin
SUN Yavuz
Abstract:
In this study, effect of indium (In) addition on microstructure and mechanical properties of AM60 magnesium alloys was investigated. In additions were made by 0.2, 0.5 and 1 wt.%. [..]
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MOLNÁROVÁ Orsolya Charles University in Prague, Czech Republic, EU, *mopersze@gmail.com
Co-authors:
MÁLEK Přemysl
LUKÁČ František
CHRÁSKA Tomáš
CINERT Jakub
Abstract:
The microstructure and mechanical properties of a powder metallurgical Al-Zr-Ti alloy was studied. Fine powder with a typical size below 50 m was prepared by gas atomization. [..]
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HAVLÍK Petr Institute of Materials Science and Engineering, NETME centre, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic, e-mail: havlik03petr@gmail.com
Co-authors:
ČUPERA Jan
DLOUHÝ Ivo
Abstract:
Electron beam welding offers many advantages over other methods of fusion welding. High current density of electron beam is one of the advantages. [..]
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KOWAL Radosław AGH University of Science and Technology, Faculty of Non - Ferrous Metals, Department of Metal Working and Physical Metallurgy of Non- Ferrous Metals, Mickiewicza Av. 30, 30-059 Cracow, Poland, EU, rakow@agh.edu.pl
Co-authors:
MAMALA Andrzej
ŚCIĘŻOR Wojciech
KWAŚNIEWSKI Paweł
GRZEBINOGA Justyna
JURKIEWICZ Bartosz
FRANCZAK Krystian
Abstract:
An important scientific and utilitarian challenge is to provide repeatability of the chemical composition in volume of billets, which guarantee the uniform yield stress during hot metal forming processes. During real billet manufacturing processes the segregation of chemical composition is observed. [..]
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KRATOCHVÍLOVÁ Vendula Brno University of Technology, Faculty of Mechanical Engineering, Brno, Czech Republic, EU, xkrato04@vutbr.cz, vlasic@fme.vutbr.cz, mazal@fme.vutbr.cz, koutny@fme.vutbr.cz
Co-authors:
VLAŠIC František
MAZAL Pavel
KOUTNÝ Daniel
Abstract:
This study evaluates fatigue properties of copper (Cu) alloy Cu7.2Ni21.8Si1Cr produced by selective laser melting technology (SLM). This technology belongs to additive manufacturing or 3D printing technologies and allows produce metal parts with complicated shapes in short production time and without the need to use expensive molds or large material waste. [..]
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Fargas Gemma CIEFMA/EEBE, Departament de Ciència dels Materials i Enginyeria Metallúrgica
Co-authors:
Roa Joan Josep
Sefer Birhan
Pederson Robert
Antti Marta-Lena
Mateo Antonio
Abstract:
One of the most common titanium alloys for aerospace industry is Ti6Al4V (usually designed as Ti64) which is used for manufacturing aero-engine components, such as fan discs, compressor discs, blades and stators. The maximum service temperature for this alloy is limited partly because of degradation of mechanical properties at elevated temperatures (above 480 °C). [..]
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