Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Karganroudi, Sasan Sattarpanah; Moradi, Mahmoud; Attar, Milad Aghaee; Rasouli, Seyed Alireza; Ghoreishi, M.; Lawrence, Jonathan; Ibrahim, Hussein

doi:10.3390/met11101659

Cited by 12 publications

(1 citation statement)

References 22 publications

(31 reference statements)

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“…The results showed a 19% reduction in overall deformation caused by welding. Karganroudi et al [ 19 ] used RSM to analyze the effect of current size and welding speed on weld geometry and temperature distribution. The penetration depth and penetration width decreased with the reduction in current residence time.…”

Section: Introductionmentioning

confidence: 99%

Process Optimization, Microstructure and Mechanical Properties of Wire Arc Additive Manufacturing of Aluminum Alloy by Using DP-GMAW Based on Response Surface Method

Du,

Sun,

et al. 2023

Materials

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Double-pulsed gas metal arc welding (DP-GMAW) is a high-performance welding method with low porosity and high frequency. Periodic shrinkage and expansion of the melt pool during DP-GMAW leads to unusual remelting, and the re-solidification behavior of the weld metal can significantly refine the weld structure. The advantages of DP-GMAW have been proven. In order to better apply DP-GMAW to aluminum alloy arc additive manufacturing, in this paper, the single-pass deposition layer parameters (double-pulse amplitude, double-pulse frequency and travel speed) of DP-GMAW will be optimized using the response surface method (RSM) with the width, height, and penetration of the deposition layer as the response values to find the superior process parameters applicable to the additive manufacturing of aluminum alloy DP-GMAW. The results show that the aluminum alloy components made by DP-GMAW additive are well formed. Due to the stirring of double-pulse arc and the abnormal remelting and solidification of metal, the microstructures in the middle and top areas show disordered growth. The average ultimate tensile strength of the transverse tensile specimen of the member can reach 175.2 MPa, and the elongation is 10.355%.

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Section: Introductionmentioning

confidence: 99%

Process Optimization, Microstructure and Mechanical Properties of Wire Arc Additive Manufacturing of Aluminum Alloy by Using DP-GMAW Based on Response Surface Method

Du,

Sun,

et al. 2023

Materials

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Sensitivity analysis and multi-objective optimization of tungsten inert gas (TIG) welding based on numerical simulation

Paes

Andrade

Lobato

et al. 2022

Int J Adv Manuf Technol

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In welding processes, many factors contribute in achieving a required quality of the welds. Those factors are numerous and they may interact with each other, affecting response parameters such as welding penetration and the Heat Affected Zone (HAZ) size. Some factors are more important while the influence of others is negligible.To find an optimum factor combination in order to maximize penetration and minimize the HAZ is not an easy task. This contribution is aimed to evaluate the influence of welding energy (E) versus the influence of current (I) and welding speed (Vw) on the penetration and HAZ volume in the autogenous Tungsten Inert Gas (TIG) welding process. For this purpose, phenomenological and empirical models are proposed. The first considers an in-house Finite Volume numerical model, and the second is based on Response Surface Method. A sensitivity analysis of the empirical model using two strategies is also performed. In addition, to determine the best-operating conditions, a multi-objective optimization problem is proposed and solved. The presented empirical models were found to provide good concordance in terms of coefficient of determination and p-value, indicating its significance. Each model (with one or more independent variables) represents detailed information about the physical process and can be used for optimization. The sensitivity analysis demonstrates that the current affects penetration and HAZ volume much stronger than the welding speed does. Physically, this is due to the fact current has linear (arc coupling) and non-linear (Joule effect and pressure gradient) influence, and the welding speed contributes linearly, modulating the heat conduction. Finally, it was demonstrated a compromise between the penetration and the HAZ volume by addressing multi-objective optimization. In this context, point C (I = 250 A; VW= 24.8 cm/min) of the Pareto curve is the optimal option for operation since it provides a lower relative HAZ volume while keeping the same penetration and higher productivity (welding speed).

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Numerical investigation of the effects of driving forces on weld pool convection and thermal stress in a GTAW process

Bensada

Laazizi²,

Fri³

et al. 2023

Int J Adv Manuf Technol

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Experimental and Numerical Analysis on TIG Arc Welding of Stainless Steel Using RSM Approach

Cited by 12 publications

References 22 publications

Process Optimization, Microstructure and Mechanical Properties of Wire Arc Additive Manufacturing of Aluminum Alloy by Using DP-GMAW Based on Response Surface Method

Process Optimization, Microstructure and Mechanical Properties of Wire Arc Additive Manufacturing of Aluminum Alloy by Using DP-GMAW Based on Response Surface Method

Sensitivity analysis and multi-objective optimization of tungsten inert gas (TIG) welding based on numerical simulation

Numerical investigation of the effects of driving forces on weld pool convection and thermal stress in a GTAW process

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