A Perspective Review on Experimental Investigation and Numerical Modeling of Electron Beam Welding Process

Chowdhury, Sohini; Yadaiah, N.; Khan, S. Mujaheed; Ozah, Rupshree; Das, Benjamin; Muralidhar, M.

doi:10.1016/j.matpr.2017.12.055

Cited by 13 publications

(2 citation statements)

References 32 publications

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“…For the TEP method, the accuracy of thermal analysis determines whether the subsequent calculation of stress and deformation is reliable. Conical and cylindrical 3D heat source, 2D and 3D Gaussian heat source, and some combination heat source models have all been chosen to represent the EBW process because of its high energy density and deep weld penetration [17][18][19]. According to our prior investigations [20], it is recommended that beam oscillation be applied during welding for the EBW of the thin-walled niobium structure to prevent poor weld formation and enhance mechanical qualities.…”

Section: Introductionmentioning

confidence: 99%

A new method for simulating electron beam welding process of niobium sheets with beam oscillation

Tao

Wu²,

Liu³

et al. 2023

Mater. Res. Express

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The construction of pure niobium superconducting radiofrequency (SRF) cavities requires the use of electron beam welding (EBW), particularly the welding in the equatorial region. The prediction of residual stress and welding distortion with high precision is important for the design of welding tooling and the optimization of welding parameters due to the detrimental influence that welding deformation and residual stress have on the performance of the SRF cavities. However, the EBW of the equator region is carried out with beam oscillation, a suitable simulation approach for the mechanical analysis of oscillating EBW received less attention. In this study, a novel heat source with two reverse 2D Gaussian heat source was created for the finite element method (FEM) simulation of EBW with beam oscillation. Additionally, a computational fluid dynamics (CFD) simulation of the molten pool was run as a guide for adjusting the parameters of the designed heat source. The FEM simulation with 2D Gaussian heat source was taken as a comparison. An EBW experiment of niobium sheets was performed for the validation of weld width, residual stress and welding distortion. The simulated molten pool of this model has a wider width, which is considerably closer to the actual measurement, and the thermal results reveal a smoother temperature gradient in the joint simulated with the proposed heat source. The mechanical results demonstrate that the estimation of the residual stress distribution and welding contradiction by the designed model are likewise more in accordance with the outcomes of the experiment. In the future, the oscillating EBW of sheet metal made of additional materials will be simulated using the suggested method.

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Section: Introductionmentioning

confidence: 99%

A new method for simulating electron beam welding process of niobium sheets with beam oscillation

Tao

Wu²,

Liu³

et al. 2023

Mater. Res. Express

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“…For comparison, a dissimilar Electron Beam (EB) weld was also performed to join the same two materials. This technique involves high energy density and narrow heat affected zone [9][10][11], hence minimizes distortion, which could be favourable for the welding of martensitic steels [12,13]. EB welding and DED-LB additive manufacturing have in particular close cooling rates, which makes the comparison interesting.…”

Section: Introductionmentioning

confidence: 99%

Laser Beam Direct Energy Deposition of graded austenitic-to-martensitic steel junctions compared to dissimilar Electron Beam welding

Villaret

Boulnat

Aubry

et al. 2021

Materials Science and Engineering: A

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Numerical Simulation and Experimental Investigation on Ti70 Titanium Alloy Electron-Beam-Welded Joint

Wang

Zhang

2020

Trans Indian Inst Met

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A Perspective Review on Experimental Investigation and Numerical Modeling of Electron Beam Welding Process

Cited by 13 publications

References 32 publications

A new method for simulating electron beam welding process of niobium sheets with beam oscillation

A new method for simulating electron beam welding process of niobium sheets with beam oscillation

Laser Beam Direct Energy Deposition of graded austenitic-to-martensitic steel junctions compared to dissimilar Electron Beam welding

Numerical Simulation and Experimental Investigation on Ti70 Titanium Alloy Electron-Beam-Welded Joint

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