Research on Microstructure and Properties of 304 Stainless Steel Made by MIG Filler Additive Manufacturing

Bai, Yishan; Gao, Qingwei; Chen, Xin; Yin, Hang; Fang, Longfei; Zhao, Jianwei

doi:10.1088/1755-1315/237/3/032096

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Several investigations have been done to analyze the arc welding process through numerical and experimental analysis. 3,5,15,16 Farias et al 10 proposed a reduced geometric method to extract the optimal parameters for the heat source model and utilized it in the numerical method to weld simulation of the Tungsten Inert Gas welding (TIGW) process. The authors confirm the high accuracy of the numerical modeling to predict the fusion zone of the welded specimen through experimental investigation.…”

Section: Introductionmentioning

confidence: 99%

“…1–4 The GMAW method has inherent benefits like high productivity, thick plate welding, no slag formation, strong weld joint compared to other arc-based welding methods. 5 The quality of GMAW weld deposition depends on multiple factors like the voltage, wire feed rate, current, welding speed, and the contact tip to work distance (CTWD). 6 The welding parameters also influence the geometry of the weld bead formation, developed microstructure, productivity, and cost of welded joints.…”

Section: Introductionmentioning

confidence: 99%

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Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead

Aslam

Sahoo

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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An investigation has been done to identify the heat source model suitable for numerical modeling of the Gas Metal arc Welding (GMAW) welding process. In the present investigation, a numerical model was constructed to simulate the GMAW welding process through transient thermal analysis for different thermal heat source models for weld deposition of Mild steel considering semi-cylindrical weld bead geometry. The Gaussian heat source with radial coordinate system and double ellipsoidal thermal heat source have been considered to develop a Finite Element Analysis (FEA) model. Validation of numerical analysis results has been confirmed through experimental investigation. Numerical modeling confirms the utilization of both heat sources, i.e. Gaussian and Double ellipsoidal for the prediction of the weld bead deposition profile. However, the numerical modeling developed using a double ellipsoidal heat source has more resembles experimental investigation due to the utilization of bead profile data. However, the Gaussian heat source is found to be suitable in the case of the unavailability of experimental data. The experimental studies show a variation in the weld bead geometry, along its welding direction due to multiple environmental factors. The microstructural investigation also shows the development of a fine columnar grain structure at the welding bead & weld penetration zone, and the grain structure became coarser at the Heat Affected Zone (HAZ).

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