The paper presents our actual knowledge and experience in joining dissimilar materials with the use of friction welding method. joints aluminium alloys different types steel were studied. structural effects occurring during process described. mechanical properties using, for example, (i) microhardness measurements, (ii) tensile tests, (iii) bending (iv) shearing tests determined. In order to obtain high-quality influence configurations such as changing geometry bonding surface, using...

Studies on bonding of aluminium alloys to steels are popular because these structural materials widely used in a variety industries. However, joining dissimilar is difficult mainly the formation brittle intermetallic compounds. This paper presents study welding steel by resistance spot welding. Before welding, surface was covered cold spraying with layer aluminium, nickel and nickel–aluminium. way, instead materials, (or nickel) pre-deposited sample performed. The feasibility using...

The article presents the results of development works and research on atomization process carried out using two prototype high-power ultrasonic systems. Ultrasonic systems have been designed to develop a new metal powder production process; these materials are increasingly used in modern manufacturing processes such as additive technologies or spraying surfacing processes. preliminary studies presented were conducted for water assess effectiveness both verify theoretical structural...

In many industries, polymers are in great demand due to their low weight and good mechanical properties. However, films coatings sometimes applied improve polymer surface This work presents a study on the metallisation of polycarbonates using pressure cold spray (LPCS) method. Two types commercial powders were selected for deposition coatings: (i) tin (ii) aluminium. The an unmodified substrate with interlayer, which enabled formation adherent aluminium coatings. A light scanning microscopy...

Abstract Solid‐state refill friction stir spot welding (RFSSW) technology offers significant benefits in the fabrication of aluminium structures transport and aerospace industries. In this paper, joining 1.6‐mm‐thick Alclad 7075‐T6 alloy sheets is investigated. High‐cycle fatigue strength tests single‐lap welded joints were carried out on an Instron E10000 testing machine with a limited number cycles equal to 2 × 10 6 . The overlap specimens was conducted using RPS100 welder by Harms &...

Low weight and high strength are significant factors in the current decade's spread of composite sandwich materials. Previous studies have proven that forming stiffening ribs these materials through Single Point Incremental Forming (SPIF) process is possible gives encouraging results. On other hand, knowledge residual stress (RS) values form during manufacturing essential, as they may affect structural integrity manufactured elements, whether compression or tension. The investigation RS...

Studying roughness parameters and the topography of stiffening ribs in composite sandwich structures is important for understanding these materials' surface quality mechanical properties. The describe micro-geometry surface, including average height deviation, depth, waviness. refers to spatial arrangement distribution features such as bumps, ridges, valleys. study investigated under three scenarios based on two SPIF process parameters: tool rotational speed(N) feed rate (f). vertical step...

Metal–plastic composites (MPCs) are gaining importance mainly due to high strength weight ratio. They consist of three layers, two outer metallic cover sheets, and a plastic core. The presence that inner layer makes them rather unsuitable for joining by means any conventional welding processes, which significantly reduces the application range MPC. In this work, various resistance spot (RSW)-based concepts were developed overcome limitation join Litecor DP600 steel. all cases, dedicated...

Abstract The article demonstrates an effective solution for ultrasonic quality monitoring of transmission and drive components motor vehicles, joined using innovative method called magnetically impelled arc butt welding (MIAB). major challenge was the application technology quick reliable testing thin-walled with complex geometry. To solve this problem idea subsurface waves investigated. By finite elements (FEM) angle beam incident on tested element frequency transducer were verified. Then,...

Abstract This study investigates residual stresses in stiffening ribs of composite materials formed by stamping a punch-die system. Using two-dimensional X-ray diffraction (XRD), we measured on both the anterior and posterior sides. Three LITECOR ® types, with core thicknesses 0.8, 1.25, 1.6 mm, were examined. Results indicate that as thickness increases, stress values decrease Notably, side y-axis are relatively higher (1027–1199 MPa) compared to x-axis, exceeding (998–1083 at 0.8 mm...

This article presents research work on an intelligent system that was developed to monitor and continuously evaluate the quality of metal powder distribution in laser bed fusion (LPBF) 3D printing process. The printer used carry out equipped with industrial vision capture images immediately after spreading field. tests showed most common defects were identified as insufficiently thick layer applied working field (super elevation), unevenly distributed a result recoater vibration (so called...

Metal 3D printing is a modern manufacturing process that allows the production of geometrically complex structures from metallic powders varying chemical composition.This paper shows results testing powder feeding and distribution system developed printer.The device using SLM method (Selected Laser Melting) was by research team WroclawTech used in this investigation.The tested vision integrated into printer control system.Thousands tests performed made it possible to identify reasons...

The paper presents results of metallographic investigations spot welds made high-strength steel HSLA340 and dual-phase DP600 steel. Low-carbon martensite microstructure was found in the weld nugget HSLA shows bainite microstructure. For both steels, no carbides microadditives were because they dissolved liquid could not precipitate again rapid heat abstraction. Moreover, transcrystallisation which proves good mixing materials within weld.

Intermetallic compounds, especially aluminides, show good high-temperature strength, oxidation resistance, high melting points, and thus have received considerable attention as potential substitutes for superalloys in applications. Aluminides are interesting because they stable up to the critical temperature of ordering, which is close temperature. In Al-Ni system, most studied intermetallics Ni3Al, NiAl NiAl3. presented study, Al Ni powders were mixed together with Al2O3 various proportions...

Abstract The article presents the possibilities of using acoustic microscopy to evaluate defects in resistance spot welding joints. For this purpose, welded joints were made from two grades aluminium plates EN AW5754 H24 and AW6005 T606, which then subjected non-destructive testing conventional destructive traditional light techniques. Additionally, study examined influence typical contaminants found industrial conditions on quality joint.

The article presents contemporary ultrasonic methods that can be applied to evaluate the quality of transmission drive components motor vehicles. issues non-destructive analysis discontinuities in manufactured shafts, consisting currently thin-walled tubes, were investigated this study. driveshaft elements joined by using innovative method called Magnetically Impelled Arc Butt Welding (MIAB). For many years, a major challenge for engineers working with techniques was joining (having...

The paper deals with the issues of welding modern car-body steels (including dual phase (DP), high strength low alloy (HSLA) and deep-drawing (DC) grades) using low-energy methods.In view small thickness elements to be joined, them conventional arc methods has becoming more rare been replaced which, while ensuring required properties joints, deliver substantially less heat weld, thus limiting its effect on structure being welded.Examinations (visual inspections, tests, hardness measurements)...

In the paper, practical aspects of hybrid adhesive-welded joints are described. For made low-alloy car-body sheet steel HS340LA 1.2 mm thick at selected variable process parameters, a wide range destructive and non-destructive tests was carried-out. The were using three constructional adhesives, one those dedicated for joints. this adhesive, most favourable hardening conditions established. Quality analysis based on ultrasonic testing with use an RSWA (Resistance Spot Weld Analyser) device,...