During the last decades, electron-beam treatment technologies (EBTT) have been widely used for surface modification of metals and alloys. The EBT methods are known as accurate efficient. They many advantages in comparison with conventional techniques, such very short technological process time, uniform distribution energy electron beam, which allows a precise control beam parameters formed structure properties materials, etc. Moreover, part additive modern manufacturing new materials unique...

In this work, electron beam welds between Cu and Al plates were formed using different power modes, namely 1800 W, 2400 3000 W. The structure, microhardness, tensile strength of the raw materials weld seams studied. low resulted in improper penetration insufficient depth seam. high cooling rates, which hindered nucleation copper aluminum particles. A number intermetallic compounds (IMCs) formed, including metastable Cu9Al4 one. An increase reduced rate increased miscibility materials. This...

This work presents results on nanosecond laser ablation of a titanium (Ti) plate immersed in liquid medium using the fundamental wavelength (1064 nm) Nd:YAG system. The radiation was focused target surface as scanning accomplished by an XY translation stage. processing Ti targets took place two organic liquids—liquid paraffin and diesel oil. morphology structured surfaces structure phase composition samples were studied; their dependences parameters are discussed. With both media used, crack...

In this work, the possibility of forming aluminium ER4043 layers using a wire arc additive manufacturing (WAAM) setup in cold (CA) mode on copper substrates was investigated. This is challenging process due to poor miscibility and aluminium, possible formation intermetallic compounds (IMCs), which would result accelerated defects, particularly cracks, zone contact between two materials. The effect different technological parameters investigated, namely feeding rate (WFR), application pulses...

This work presents results on the influence of thickness structure and biological response Cu-O coatings deposited commercially pure titanium (cpTi) substrates using direct current (DC) magnetron sputtering. The deposition times were 5, 10, 15 min to obtain with different thicknesses. show that films for correspond thicknesses 41, 74, 125 nm, respectively. phase composition is in form a double-phase CuO Cu2O all considered cases. roughness nanometric scale no obvious trend as function can be...

This paper presents a new method for correction of dynamic errors occurring when measuring flat surfaces in the presence mechanical effects. Mechanical effects cause inertial forces and moments that affect moving components instruments, thereby causing errors. The study proposes mathematical model, on basis which algorithms can be developed. basic concept model is based determining optimal estimate current coordinate point theoretical measured surface information from measurement contains...

The mass production of metallic components requires high agility in the working process conditioned by necessity building details different shapes and sizes. Changing size theoretically influences thermal dissipation capability same, which could lead to a change their structure mechanical properties. This is particularly important when aluminum alloys are concerned. For this reason, two Al5356 single-track specimens were built using same technological conditions layer deposition varying only...

The current work is based on investigating the influence of different technological conditions electron-beam welding microstructure and mechanical properties joints between Ti6Al4V Al6082-T6 dissimilar alloys. plates were in all cases preheated to 300 °C. Different strategies investigated such as varying current/welding speed ratio (Ib/vw) applying a beam offset towards aluminum side. heat input during experiments was varied order guarantee full penetration electron beam. macrostructure...

One of the primary risk factors for implant failure is thought to be implant-related infections during early healing phase. Developing coatings with cell stimulatory behaviour and bacterial adhesion control still difficult bone implants. This study proposes an approach one-step deposition biocompatible antimicrobial Cu-doped TiO2 via glow-discharge sputtering a mosaic target. During deposition, bias Ti6Al4V substrates was changed. Structure examination, phase analysis, surface morphology...

This work presents the results of electron-beam welding commercially pure α-Ti (CP-Ti) and Ti6Al4V (Ti64) alloys. The structure mechanical properties formed welded joints were examined as a function power electron beam. beam was set to P1 = 2100 W, P2 1500 P3 900 respectively. X-ray diffraction (XRD) experiments performed in order investigate phase composition fabricated joints. microstructure by both optical microscopy, scanning microscopy (SEM), energy dispersive spectroscopy (EDX)....

This study examines the effect of electron beam treatment (EBT) Co–Cr substrate on film growth mechanism, mechanical properties, and surface topography TiN/TiO2 coatings deposited by reactive magnetron sputtering. The obtained results processes that occurred during deposition are discussed in context crystallographic principles, special attention is paid to orientation mechanism studied X-ray diffraction (XRD). properties were investigated means nanoindentation wear tests. was evaluated...

In this study, we present the results of Young’s modulus and coefficient friction (COF) Ti–Ta surface alloys formed by electron-beam alloying a scanning electron beam. Ta films were deposited on top Ti substrates, specimens then alloyed, where beam power was varied from 750 to 1750 W. The structure samples characterized microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), diffraction (XRD). studied nanoindentation test. micromechanical wear experiment. It found that at W, film...

In this study, we present the results of electron-beam welding joints with 304-L stainless steel and copper. The influence beam’s power on structures mechanical properties welded was studied; experiments were realized at a beam deflection 0.3 mm to Cu plate powers 2400, 3000, 3600 W. phase compositions obtained studied by using X-ray diffraction (XRD); microstructure chemical composition investigated scanning electron microscopy (SEM) energy-dispersive spectroscopy (EDX), respectively....

In this study, we present the results from electron-beam welding operations applied on copper and Al6082T6 aluminum alloys. The influence of beam-scanning geometries structure mechanical properties welded joint is studied. experiments were conducted using a circle oscillation mode with an radius 0.1 mm 0.2 mm. beam deflection was set to 0.4 respect side alloy, power at 2700 W. phase composition obtained joints studied by X-ray diffraction (XRD). Scanning electron microscopy (SEM) used for...

In the current paper, correlation between physical size of additively built wire arc specimens and their structure properties is studied. For purpose this work, two oval shaped different lengths were manufactured under same technological conditions. The have a length 200 mm 400 will be referred to as L200 L400. microstructure samples was studied using X-ray diffraction analysis (XRD), optical microscopy, scanning electron microscopy (SEM). microhardness, yield strength (YS), ultimate tensile...

In this investigation, a duplex surface modification of M2 high-speed steel (HSS) was demonstrated, including electron beam treatment (EBT) followed by tungsten nitride (WN) coating deposition. The influence the EBT substrate on functional properties film also studied. phase composition sample consists Fe (the main element in HSS), as well MC and M6C carbides, while + WN α’-Fe, M6C, phases. depth treated zone is about 20 μm, thickness 300 nm all cases. hardness deposited 12.4 GPa, that...

This work presents the results of an investigation into influence beam offset on structure and mechanical properties electron-beam-welded joints between Ti6Al4V Al6082-T6 alloys. The experimental procedure involved use specific technological conditions: accelerating voltage 60 kV, electron current 35 mA, a specimen motion speed 10 mm/s, 0.5 mm towards both alloys, as well welding without offset. phase composition was analyzed using X-ray diffraction (XRD). microstructure chemical seams were...

In the present work, we results on influence of electron beam surface modification resistance to plastic deformation and plasticity Inconel alloy 625. During treatment procedure, currents were 10 20 mA, corresponding powers 600 W 1200 W. The structures modified specimens studied using X-ray diffraction (XRD), scanning microscopy (SEM), energy-dispersive spectroscopy (EDX). nanohardness Young’s modulus through nanoindentation experiments. treated materials as well untreated ones was an...

In this work, the results from electron beam welding of copper and Al6082T6 aluminum alloy with a titanium filler are presented. The influence on structure mechanical properties welded joint is studied in comparison one without filler. X-ray diffraction (XRD) method was used to obtain phase composition joints. Scanning microscopy (SEM) for study microstructure welds. Energy-dispersive spectroscopy (EDX) applied investigate chemical composition. were by means microhardness measurements...

In this study, we present the results of effect duplex surface modification 304-L stainless steel substrates by an electron-beam treatment (EBT) and subsequent deposition diamond-like carbon coatings on roughness corrosion behavior. During EBT process, beam power was varied from 1000 to 1500 W. The successful DLC confirmed FTIR Raman spectroscopy experiments. showed a presence C–O, C=N, graphite-like sp2, mixed sp2-sp3 C–C bond vibrations. topography studied atomic force microscopy. rise in...