Fiber laser-cold metal transfer arc hybrid welding was developed to welding-braze dissimilar Al and Ti alloys in butt configuration. Microstructure, interface properties, tensile behavior, and their relationships were investigated in detail. The results show the cross-weld tensile strength of the joints is up to 213 MPa, 95.5% of same Al weld. The optimal range of heat input for accepted joints...

Orbital pipe welding was often used to manufacture piping systems. In orbital welding, a major challenge is the torch’s position during process, so that additional methods are needed overcome these challenges. This paper discusses influence of sequence and current on distortion, mechanical properties metallurgical observations in with SS 316L square butt joints. The variation parameters sequenc...

The extruded AZ61A magnesium alloy plates of 6 mm thickness were butt welded using friction stir welding (FSW) process. The corrosion behavior of the welds was evaluated by conducting immersion test in NaCl solution at different pH value, immersion time and chloride ion concentrations. An empirical relationship was established incorporating pH value, immersion time and chloride ion concentratio...

A simulation model was developed for the monitoring, controlling and optimization of the Friction Stir Welding (FSW) process. This approach, using the FSW technique, allows identifying the correlation between the process parameters (input variable) and the mechanical properties (output responses) of the welded AA5754 H111 aluminum plates. The optimization of technological parameters is a basic ...

This study predicts the behavior of welded plate panels (unstiffened plates) with different geometrical properties (slenderness ratio and aspect ratio) in order to address a rational structural design procedure, as these parameters are great importance from perspective. Nonlinear finite element analysis has been used simulate butt-welding process panels, giving three-dimensional distribution di...

Butt welding of austenitic stainless steel 304 plates was carried out using an electron beam. Experiments were conducted for various combinations of input process parameters determined according to central composite design. Three input parameters, namely accelerating voltage, beam current, and welding speed were considered during the experiments. The weld-bead parameters, namely bead width and ...

Uneven surface quality often occurs when manual grinding butt welds, so robot welding seam automation has become a fast-developing trend. Weld extraction and trajectory planning are important for automatic control of process. However, the research on weld is mostly focused pre-welding. Due to irregular shape after complex process, there seldom work that been devoted welding. Consequently, novel...