Cold welding ≈ Cold welding
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Prospects of laser beam welding and friction stir welding processes for aluminum airframe structural applications Open
The present study deals with laser beam welding (LBW) and friction stir welding (FSW) applied to high-strength aluminum alloys used in aircraft industry and displays their advantages compared with the riveting technique regarding structura…
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State of the art about dissimilar metal friction stir welding Open
Friction stir welding is a rather recent welding process (patented in 1991 by Thomas et al., ‘Improvements to friction welding’ UK patent application no. 9125978.8, US Patent 5460317, 1995) that has shown great potential for welding dissim…
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Dissimilar material welding of tantalum foil and Q235 steel plate using improved explosive welding technique Open
Achieving high quality tantalum coatings on common metals is still a challenging task, due to potential technical problems such as high differences in melting points and formation of intermetallic compounds. In this work, an improved explo…
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Review of recent trends in friction stir welding process of aluminum alloys and aluminum metal matrix composites Open
Welding is a vital component of several industries such as automotive, aerospace, robotics, and construction. Without welding, these industries utilize aluminum alloys for the manufacturing of many components or systems. However, fusion we…
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High-Velocity Impact Welding Process: A Review Open
High-velocity impact welding is a kind of solid-state welding process that is one of the solutions for the joining of dissimilar materials that avoids intermetallics. Five main methods have been developed to date. These are gas gun welding…
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A Review: Laser Welding of Dissimilar Materials (Al/Fe, Al/Ti, Al/Cu)—Methods and Techniques, Microstructure and Properties Open
Modern structural engineering is impossible without the use of materials and structures with high strength and low specific weight. This work carries out a quantitative and qualitative analysis of articles for 2016–2021 on the topic of wel…
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Continuous ultrasonic welding of thermoplastic composites: Enhancing the weld uniformity by changing the energy director Open
Continuous ultrasonic welding is a high-speed joining method for thermoplastic composites. Currently, a thin film energy director is used to focus the heat generation at the interface. However, areas of intact energy director remain in the…
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Effect of Surface States on Joining Mechanisms and Mechanical Properties of Aluminum Alloy (A5052) and Polyethylene Terephthalate (PET) by Dissimilar Friction Spot Welding Open
In this research, polyethylene terephthalate (PET), as a high-density thermoplastic sheet, and Aluminum A5052, as a metal with seven distinct surface roughnesses, were joined by friction spot welding (FSW). The effect of A5052’s various su…
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Laser Welding under Vacuum: A Review Open
Laser welding has been widely used in various industry fields. In order to further alter and broaden its applicability, a novel technology of laser welding under vacuum is introduced. The combination of high power laser and low ambient pre…
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Hybrid resistance-laser spot welding of aluminum to steel dissimilar materials: Microstructure and mechanical properties Open
In this work, an innovative hybrid resistance spot-laser welding process, which first conducts resistance spot welding of aluminum and steel dissimilar materials, followed by laser spot welding, is proposed to join aluminum to steel. Throu…
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Friction Stir Welding Process of Aluminum-lithium Alloy 2195 Open
Friction stir welding is solid state welding and involves heating the metal with a suitable amount of pressure so that homogeneous and complete microstructural welding is possible without melting of the parts to be joined. The process uses…
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Process analysis for magnetic pulse welding of similar and dissimilar material sheet metal joints Open
Magnetic pulse welding (MPW) is an impact welding technology for producing metallic bonds of similar and dissimilar materials offering advantages such as avoidance of temperature induced problems. Based on the parameters describing the col…
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Effect of oscillating laser beam on the interface and mechanical properties of Ti/Al fusion welding joint Open
To solve the problem that cracks and brittle Ti-Al intermetallic compounds restrict the mechanical properties of Ti-Al joint, an effective connection method has been explored for laser welding of TC4 titanium alloy and 7075 aluminum alloy …
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Exploring the hybrid metal extrusion and bonding process for butt welding of Al–Mg–Si alloys Open
The hybrid metal extrusion and bonding (HYB) process is a new solid-state joining technique developed for aluminum alloys. By the use of filler material addition and plastic deformation sound joints can be produced at operating temperature…
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Influence of Surface State in Micro-Welding of Copper by Nd:YAG Laser Open
Laser welding of copper is characterized by low and unstable light absorption around 1000 nm wavelength. Combination of high thermal conductivity and low melting point makes it difficult to obtain good welding quality and leads to low ener…
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Sound Welding of Copper: Laser Beam Welding in Vacuum Open
Copper is one of the most important metals of modern times. The extensive usage from thin foils up to thick plates leads to a huge amount of welding applications. Basically the Laser Beam Welding is suited well for the welding of copper, b…
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Microstructural Characterization and Mechanical Behavior of NiTi Shape Memory Alloys Ultrasonic Joints Using Cu Interlayer Open
NiTi shape memory alloys (SMAs) are a class of functional materials which can be significantly deformed and recover their original shape via a reversible martensitic phase transformation. Developing effective joining techniques can expand …
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Effect of Y2O3 addition and milling time on the synthesis of nanocrystalline Ag–ZnO composite powder via mechanical alloying Open
The combined effect of Y2O3 addition and milling time on the synthesis and characterization of Ag–ZnO electrical contact material was investigated via mechanical alloying technique. For this purpose, a planetary ball mill including tungste…
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Microstructure and Mechanical Properties of Ultrasonic Welded Joint of 1060 Aluminum Alloy and T2 Pure Copper Open
The microstructure and mechanical properties of Al/Cu ultrasonic welding joints were investigated. Results show that: (i) the joint strength increased when the welding time increased within a certain range, and a maximal resistant force of…
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Explosive Welding of Copper to High Nitrogen Austenitic Stainless Steel Open
In this work, T2 red copper and high nitrogen austenitic stainless steel (HNASS) were explosively welded for the first time. The welding window was theoretically developed, and the experiment was designed by considering the effect of explo…
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Influence of the Overlapping Factor and Welding Speed on T-Joint Welding of Ti6Al4V and Inconel 600 Using Low-Power Fiber Laser Open
Double-sided laser beam welding of skin-stringer joints is an established method for many applications. However, in certain cases with limited accessibility, single-sided laser beam joining is considered. In the present study, single-sided…
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A Comparative Study on the Laser Welding of Ti6Al4V Alloy Sheets in Flat and Horizontal Positions Open
Laser welding has been increasingly utilized to manufacture a variety of components thanks to its high quality and speed. For components with complex shapes, the welding position needs be continuously adjusted during laser welding, which m…
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Numerical Study of Contact Behavior and Temperature Characterization in Ultrasonic Welding of CF/PA66 Open
Ultrasonic plastic welding (UPW) is a promising method for joining carbon fiber reinforced thermoplastic (CFRTP). The interface temperature determines weld quality to a large extent. This paper numerically analyzes the contact behavior and…
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Characterization of keyhole dynamics in laser welding of copper by means of high-speed synchrotron X-ray imaging Open
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Application of Cold Wire Gas Metal Arc Welding for Narrow Gap Welding (NGW) of High Strength Low Alloy Steel Open
Narrow gap welding is a prevalent technique used to decrease the volume of molten metal and heat required to fill a joint. Consequently, deleterious effects such as distortion and residual stresses may be reduced. One of the fields where n…
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Laser beam welding of copper foil stacks using a green high power disk laser Open
A major challenge in the manufacturing of lithium-ion batteries is the qualification of a production system that is able to provide the high quality requirements of the cells. For internal contacting, the demands on the joining process are…
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Influence of welding parameters and surface preparation on thin copper–copper sheets welded by ultrasonic welding process Open
Ultrasonic welding is increasingly used in industry. In this paper, the influence of ultrasonic welding parameters (USW) on the joint strength and quality was analysed. The properties of the USW joints depend on many factors. The work focu…
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Microstructure evolution and mechanical properties analysis in dissimilar ultrasonic metal welding of aluminum to copper Open
Ultrasonic metal welding is a solid-state welding process being widely employed for joining the interconnections of lithium-ion batteries in hybrid and plug-in hybrid vehicles. Examining the microstructure of the joint is of crucial import…
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Effects of welding angle on microstructure and mechanical properties of longitudinal weld in 6063 aluminum alloy extrusion profiles Open
In order to explore the effects of welding angle on microstructure and mechanical properties of longitudinal weld, a porthole die with different welding angles was designed and manufactured, by using which various extrusion experiments wer…
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Numerical analysis of process dynamics in laser welding of Al and Cu Open
The process windows for welding Al and Cu are quite limited due to process instabilities like spiking or humping that lead to severe welding failures. Within this paper the fluiddynamical reasons for these instabilities will be analysed by…