Background: Hazardous chemical agents in the welding operation are a mixture of metal fumes and toxic gases, the inhalation of which causes adverse health effects among welders. The emission of gases in the workplace is a logical cause for concern regarding the potential development of respiratory disease. The aim of the present study was to determine the concentration values of gases discharge...

Polychromatic and wavelength-selective neutron transmission radiography were applied during bead-on-plate welding on 5 mm thick sheets the face side of martensitic low transformation temperature (LTT) steel plates using gas tungsten arc (GTAW). The in situ visualization austenitization upon subsequent α’-martensite formation cooling could be achieved with a temporal resolution 2 s for monochrom...

The combination of GTAW (Gas Tungsten Arc Welding) and SMAW (Shield Metal processes on SA537 Class 2 carbon steel using variations heat input is the main choice to get best quality welded joints. This research aims joint material process with determine results mechanical properties microstructure analysis. experimental method uses a single V butt design, groove angle 60o, root face mm gap 4 as ...

Abstract High-entropy alloy, a new generation material, exhibits superior structural properties. For high-temperature applications, where dissimilar materials are in demand, HEAs may be joined with commercially available to improve their performance-life ratio. In this connection, joint was fabricated by gas tungsten arc welding between Al 0.1 CoCrFeNi-HEA and Inconel 718. The columnar dendriti...

During arc welding, the arc heats and melts the workpiece as heat flux. When the welding current is given, the distribution and the intensity of the heat flux are determined by the length of the arc. The measurement and control of the arc length are fundamental in robotic and automated welding operations. Length of welding arc determines the distribution of the arc energy and thus the heat inpu...

in this study, gtaw process and cored wires were used to coat al/al3ti wear resistant composite on a commercial pure al substrate. wire drawing process was utilized to produce the cored wires from aluminum strips and a mixture of titanium and aluminum powders. the microstructures and the present phases were investigated by metallographic, sem equipped with eds and xrd analysis. moreover, the ha...