in the present study, the corrosion behavior of aisi 347 austenitic stainless steel to astm a335 low alloysteel dissimilar joint was investigated. for this purpose, two filler metals, er309l and ernicr-3, were selected to be used during the gas tungsten arc welding process. to investigate the corrosion behavior of the joints after welding, the specimens were tested in 3.5% sodium chloride solut...

Tungsten inert gas (TIG) is currently one of the most widely applied welding technologies. However, arc energy divergence and high heat input conventional TIG can lead to defects in heat-input-sensitive alloys (such as Inconel 718). Introducing a fast-frequency pulsed current (≥20 kHz) creates process named tungsten (FFP-TIG). The behavior FFP-TIG has advantages over terms contraction, pressure...

Submerged arc welding is used widely in oil and gas industry construction for storage tanks, pressure vessels, shipbuilding and etc. One of the processes of submerged arc welding is back gouging operations. This paper presents a way to remove the back gouging operation from the submerged arc welding process. For this purpose, effects of submerged arc welding parameters onA516-70steel sample wer...

Shielding gases are fundamental to the operation of the gas metal arc welding (GMAW) process and there are a number commonly used, each with its own specific properties, i.e., ionization potential, which creates unique arc characteristics (Refs. 1–7). Shielding gases are also commonly used in a variety of premixed combinations of two or more gases in order to take advantage of the beneficial pr...

Plasma optical spectroscopy and laser-induced breakdown (both on off-line) are used in this work to analyze the effects of different perturbations applied a tungsten inert gas welding process. This approach enables analysis comparison spectra acquired with two setups, thus providing more information about process evolution dynamics resulting chemical composition seams. It will be demonstrated t...

Results from a computational model of arc welding, in which the arc plasma, workpiece and electrode are treated self-consistently, are presented. It is demonstrated through three examples (the effect of shielding gas composition, metal vapour and electrode shape on the weld pool) that reliable prediction of weld pool depth and geometry requires that the arc plasma is included in the computation...

This study investigates the relationship between four welding input parameters (voltage, current, heat input, and speed) ultimate tensile strength (UTS) yield (YS) of a welded joint. The work joined two super-duplex stainless-steel pipes outside diameter 0.630 inches (16.002 mm) thickness 0.065 (1.651 mm), using Gas Tungsten Arc Welding. Factorial design was used to ascertain main interaction e...

This paper presents a numerical and infrared experimental study of thermal and grain growth behavior during argon tungsten arc welding of 443 stainless steel. A 3D finite element model was proposed to simulate the welding process. The simulations were carried out via the Ansys Parametric Design Language (APDL) available in the finite-element code, ANSYS. To validate the simulation accuracy, a s...

This research aims to investigate the process of gas tungsten arc welding commonly used in submersible pump industry. The weld abandons is a noteworthy concern prompting revamp, greater expenses, and this manner, influencing conveyance plan activity. article succeeds deploying six sigma Define, Measure, Analyze, Improve, Control (DMAIC) structure improve action features assess eradicate differe...