Heat-affected zone
View article
Cold metal transfer (CMT) technology - An overview Open
Cold Metal Transfer technology has revolutionized the welding of dissimilar metals and thicker materials by producing improved weld bead aesthetics with controlled metal deposition and low heat-input. In this study, the process, weld combi…
View article
Optimization of the solidification conditions by means of beam oscillation during laser beam welding of aluminum Open
Aluminum (AA6016) sheets were welded in overlap configuration to investigate the influence of different beam oscillation patterns on the resulting temperature gradient, the local solidification rate and the resulting grain structure and to…
View article
Experimental investigations on mechanical properties of multi-layered structure fabricated by GMAW-based WAAM of SS316L Open
In the present study, the Gas metal arc welding (GMAW) based Wire-arc additive manufacturing (WAAM) process was used to fabricate a multi-layered structure at opti-mized process parameters on SS316L using metal wire of SS316L. The multi-la…
View article
Investigation of metal mixing in laser keyhole welding of dissimilar metals Open
Laser keyhole welding of dissimilar metals has broad applications in various industrial fields. However, dissimilar metal mixing in the molten pool often causes the formation of detrimental intermetallic compounds that can undermine the pe…
View article
Formability, microstructure evolution and mechanical properties of wire arc additively manufactured AZ80M magnesium alloy using gas tungsten arc welding Open
Wire arc additive manufacturing (WAAM) technology has been used to fabricate the multi-layer single-pass deposited wall of AZ80M magnesium (Mg) alloy by gas tungsten arc welding. The formability, thermal cycles, microstructural evolution a…
View article
On the effect of flat energy directors thickness on heat generation during ultrasonic welding of thermoplastic composites Open
This paper presents a detailed experimental assessment of the effect of the thickness of flat energy directors (ED) on heat generation at the interface during ultrasonic welding. Power and displacement data showed clear differences caused …
View article
Formation of weld defects in cold metal transfer arc welded 7075-T6 plates and its effect on joint performance Open
This study aims at investigating the formation of weld defects (i.e., pores) and determining the effect of pores on mechanical performance of the AA7075-T6 plate joints produced using cold metal transfer (CMT) gas metal arc welding (GMAW) …
View article
Microstructures and mechanical properties of a welded CoCrFeMnNi high-entropy alloy Open
The response of the CoCrFeMnNi high-entropy alloy to weld thermal cycles was investigated to determine its applicability as an engineering structural material. Two processes were used: high-energy-density, low-heat-input electron beam (EB)…
View article
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…
View article
Experimental investigation on laser cutting of PMMA sheets: Effects of process factors on kerf characteristics Open
This paper reports an experimental investigation on continuous CO2 laser cutting of polymethylmethacrylate (PMMA) sheet. The influence of four process factors (laser power, cutting speed, assisting gas pressure and sheet thickness) on five…
View article
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…
View article
Effect of Welding Heat Input on Simulated HAZ Areas in S960QL High Strength Steel Open
When the weldability of high strength steels is analyzed, it is the softening in the heat-affected zone (HAZ) that is mostly investigated, and the reduction of toughness properties is generally less considered. The outstanding toughness pr…
View article
Reduction of Energy Input in Wire Arc Additive Manufacturing (WAAM) with Gas Metal Arc Welding (GMAW) Open
Wire arc additive manufacturing (WAAM) by gas metal arc welding (GMAW) is a suitable option for the production of large volume metal parts. The main challenge is the high and periodic heat input of the arc on the generated layers, which di…
View article
Dissimilar metal joining of stainless steel and titanium using copper as transition metal Open
Joining of stainless steel and titanium dissimilar metal combination has a specific interest in the nuclear industry. Due to the metallurgical incompatibility, it has been very difficult to produce reliable joints between these metals due …
View article
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…
View article
A Review on Welding of Dissimilar Metals in Car Body Manufacturing Open
This paper presents a comprehensive study of the metallurgical challenges of welding dissimilar metals. It also describes the important factors in dissimilar welding which need to be considered for automotive applications. It further inves…
View article
A Finite Element Model to Simulate Defect Formation during Friction Stir Welding Open
In this study, a 3D coupled thermo-mechanical finite element model is developed to predict and analyze the defect formation during friction stir welding based on coupled Eulerian Lagrangian method. The model is validated by comparing the e…
View article
Laser welding of H-phase strengthened Ni-rich NiTi-20Zr high temperature shape memory alloy Open
Laser welding of a Ni-rich NiTi-20Zr (at.%) high temperature shape memory alloy was performed. The starting base material was aged for 3 h at 550 °C followed by air cooling prior to welding to induce H-phase precipitation. Advanced microst…
View article
Advanced High-Strength Steels for Automotive Applications: Arc and Laser Welding Process, Properties, and Challenges Open
In recent years, the demand for advanced high-strength steel (AHSS) has increased to improve the durability and service life of steel structures. The development of these steels involves innovative processing technologies and steel alloy d…
View article
Experimental and numerical investigation on under-water friction stir welding of armour grade AA2519-T87 aluminium alloy Open
Friction stir welding (FSW) is a promising welding process that can join age hardenable aluminium alloys with high joint efficiency. However, the thermal cycles experienced by the material to be joined during FSW resulted in the deteriorat…
View article
Effect of alloy element on weld pool dynamics in laser welding of aluminum alloys Open
In this manuscript, weld pool dynamics in laser welding of various series of aluminum alloys were investigated by the in situ X-ray phase contrast imaging system. The experimental results showed that metal irradiated by laser was evaporate…
View article
Parametric Optimization of MIG Welding on 316L Austenitic Stainless Steel by Grey-based Taguchi Method Open
In the present work, visual inspection and X-ray radiographic test has been conducted in order to detect surface and sub-surface defects of weld specimens made of AISI 316L austenitic stainless steels. Effect of current, gas flow rate and …
View article
Metallurgical and mechanical properties of laser welded high strength low alloy steel Open
The study aimed at investigating the microstructure and mechanical properties of Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser welded high strength low alloy (HSLA) SA516 grade 70 boiler steel. The weld joint for a 4 mm thick plat…
View article
A review porosity in aluminum welding Open
Aluminum is a material that is often used in the transportation industry because it has a low density, high strength, and good corrosion resistance. The transport structure requires connection to achieve a form as designed. The joint proce…
View article
Laser Beam and Laser-Arc Hybrid Welding of Aluminium Alloys Open
Aluminium alloys are widely used in many industries due to their high strength-to-weight ratios and resistance to corrosion. Due to their specific thermophysical properties and intricate physical metallurgy, these alloys are challenging to…
View article
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…
View article
Experimental investigation and optimization of weld bead characteristics during submerged arc welding of AISI 1023 steel Open
Submerged arc welding (SAW), owing to its high deposition rate and high welding quality, is widely used in the fabrication of pressure vessel, marine vessel, pipelines and offshore structures. However, selection of an optimum combination o…
View article
Real-Time Detection of Weld Defects for Automated Welding Process Base on Deep Neural Network Open
In the process of welding zinc-coated steel, zinc vapor causes serious porosity defects. The porosity defect is an important indicator of the quality of welds and degrades the durability and productivity of the weld. Therefore, this study …
View article
Ultrasonic welding of CF/PPS composites with integrated triangular energy directors: melting, flow and weld strength development Open
This paper presents a fully experimental study on melting, flow and weld strength development during ultrasonic welding of CF/PPS composites with integrated triangular energy directors. The main goal of this research was assessing whether …
View article
Characterisation of 4043 aluminium alloy deposits obtained by wire and arc additive manufacturing using a Cold Metal Transfer process Open
4043 aluminium deposits were elaborated using a 3D print device equipped with a Cold Metal Transfer welding source. Two sets of process parameters leading to different average powers were compared in order to establish the relations betwee…