Light Band Zone Formation and its Influence on Properties of Magnetically Impelled Arc Butt (MIAB) Welded Carbon Steel Tubes

Sivasankari, R.; Balusamy, V.; Venkateswaran, P. R.; Kumar, K. Ganesh; Buvanashekaran, G.

doi:10.1007/s12666-017-1185-8

Cited by 11 publications

(7 citation statements)

References 18 publications

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“…Similar researches were conducted by Sivasankari et al. 7–9 to study the effect of upset current on the final strength and microstructure of the welded joints. Their research revealed that samples welded using higher upset current even with large variation of other welding parameters exhibit high weld strength and ductility due to the formation of acicular ferrite.…”

Section: Introductionmentioning

confidence: 57%

The influence of process parameters on the distribution of residual stresses in magnetically impelled arc welded joints

Sedighi

Mosayebnezhad

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the influence of welding parameters on the distribution of residual stress in magnetically impelled arc butt welded joints was investigated. As major contributing factors to the quality of weldments and residual stress, welding time and welding upsetting pressure were focal points of this work. Experimentally verified thermal-metallurgical and mechanical finite element model was used for conducting this purpose. The effects of phase change including volumetric phase change and transformation plasticity were considered in the numerical model. Based on the numerical simulation it was observed that for instance by increasing upset pressure from 0 to 130 MPa, axial residual stresses have reduced from −210 MPa to −119 MPa, while by increasing welding time from 4 to 6 s, these stresses have increased from −119 MPa to −138 MPa on the outer surface of the weld line.

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Section: Introductionmentioning

confidence: 57%

The influence of process parameters on the distribution of residual stresses in magnetically impelled arc welded joints

Sedighi

Mosayebnezhad

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Metallography and the simulation results showing the microstructural phase content are in agreement with each other as shown in figure 3. f) base material microstructure [8] Sivashankari et al [9] observed the formation of a distinct white zone at the weld as part of the macro examination in samples that are welded with lower upset current. This band zone indicates chemical inhomogeneity caused by incomplete homogenisation and incomplete expulsion of decarburised region at the weld.…”

Section: Fig 2 Subsurface Testing Methodology [7]mentioning

confidence: 99%

“…The trials were made with different ranges based on reported results for other dimensions of tubes [3], [9]. The first set of trials involved experiments for reaching the required hydraulic pressure and stage I current.…”

Section: Parameter Value Selectionmentioning

confidence: 99%

Non-Destructive Testing of Magnetically Impelled Arc Butt Welding of Mild Steel Tubes

Chaturvedi¹,

Vendan²,

Sharanabasavaraj³

et al. 2022

AWET

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This paper presents the results of Non-Destructive Testing on Magnetically Impelled Arc Butt (MIAB) welded mild steel tubes of 27mm OD and 1.5mm thickness. As part of this work, the tests covered were radiography, liquid penetrant, and magnetic particle testing. The testing results indicate that porosity, penetration levels and the defects found are within acceptable limits as per standard. For this experimental work, the selection of parameters was based on trial and error adopted in preliminary trials. The irregularities found in the non-destructive testing samples have enabled the fine-tuning of process parameters. The optimum values of hydraulic pressure, weld time and weld current are assessed to be 30-35bar, 5.5s and 150 A, respectively 270 A for this dimension of tubes. This work focuses on the experimental observations of MIAB welding and Non-destructive testing results for MS tubes of the selected dimension, which have not been reported in the existing literature. The achieved input forms the database for the parametric study of this process. The optimum parametric ranges obtained from the results can be extrapolated to be used for joining tubes of different dimensions and can also form the inputs for reaching parameter and response dependency equations.

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“…Based on the offset conditions, several process aspects were found inadequate. The offset conditions may include changing the magnetic field, heat losses, inappropriate arc position, and Sivasankari, R. et al [15] observed a wide Light Band (LB) zone, along the weld line, in the microstructure of the MIAB-welded carbon steel tubes of 44 mm OD and 4.5 mm thickness, the phenomenon being attributed to the lower current (600 A) applied during upsetting. Incomplete homogenization and upsetting cause chemical heterogeneity that results in decarburization during the phase transformation.…”

Section: Heat Transfer During Miab-welding Processmentioning

confidence: 99%

“…Researchers worldwide [12][13][14][15][16][17][18] have conducted experimental tests to determine the feasibility of using MIAB welding to join alloy steel tubes. Visual inspection of the weld bead and penetration has been made to analyse the effects of process parameters on the weld geometry.…”

Section: Introductionmentioning

confidence: 99%

Critical Review on Magnetically Impelled Arc Butt Welding: Challenges, Perspectives and Industrial Applications

Chaturvedi,

Vendan Subbiah,

Simion

et al. 2023

Materials

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Magnetically Impelled Arc Butt (MIAB) welding is a cutting-edge joining method that replaces the conventional welding procedures such as resistance, friction, flash and butt welding. It is a solid-state process that uses a rotating arc to heat up the butt ends of tubes, being followed by a forging process that completes the joining of the workpieces The magnetic flux density and the current interact to develop the Lorentz force that impels the arc along the faying surfaces. This process is found to produce high tensile strength and defect-free welds in ferrous materials and for this reason, it is predominantly employed in automobile applications for joining metallic tubes. Also, this joining procedure can be applied in the fabrication of boilers, heat exchangers, furnace piping in petrochemical industry and other safety-critical high-pressure machinery parts. The MIAB method has several advantages such as a shorter welding cycle, lower input energy requirement and lower loss of material. Compared to other solid-state welding processes, the MIAB welding has an important advantage in terms of cost-efficient welds with better control and reliability. Moreover, there are researchers who have investigated the joining of non-ferrous dissimilar materials using this welding procedure. The studies have been focused on process parametric analysis that involves optimizing and forecasting the magnetic field and thermal profile distribution. This review article provides competitive insights into various design features, computational methods, tests and material characterization, technical issues and workarounds, as well as automation aspects related to the MIAB-welding process. This work will prove to be a quick reference for researchers, useful to identify the research gaps and conflicting ideas that can be further explored for advancements in joining the similar and dissimilar materials.

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Light Band Zone Formation and its Influence on Properties of Magnetically Impelled Arc Butt (MIAB) Welded Carbon Steel Tubes

Cited by 11 publications

References 18 publications

The influence of process parameters on the distribution of residual stresses in magnetically impelled arc welded joints

The influence of process parameters on the distribution of residual stresses in magnetically impelled arc welded joints

Non-Destructive Testing of Magnetically Impelled Arc Butt Welding of Mild Steel Tubes

Critical Review on Magnetically Impelled Arc Butt Welding: Challenges, Perspectives and Industrial Applications

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