Effect of transverse magnetic field on weld formation and microstructure &amp; properties of high-speed hot-wire tungsten inert gas welding joints

Zhao, Muming; Chen, Junxu; Yu, Min; Li, Bo; Feng, Xuezhi

doi:10.1080/13621718.2020.1730546

Cited by 14 publications

(6 citation statements)

References 18 publications

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“…Tungsten inert gas welding is very suitable for studying the deflection behavior of arc under magnetic field because of its unique characteristics that only arc exists. Zhao et al [ 79 ] adopted an TMF in high‐speed hot‐wire TIG welding to adjust the flow of molten pool and the weld bead. Since the electrode direction is opposite to that in Figure 2c, the arc receives an electromagnetic force in the welding direction.…”

Section: Effect Of Magnetic Field On the Arc Weldingmentioning

confidence: 99%

Effects of Magnetic Fields in Arc Welding, Laser Welding, and Resistance Spot Welding: A Review

Shi

Cui

et al. 2022

Adv Eng Mater

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The application of magnetic field in welding process has been proved to be effective in improving the mechanical properties of welded joints and is regarded as a practicable auxiliary welding method. Although the theoretical research on magnetic field‐assisted welding is quite abundant, there is still a long way to go before a stable industrial application is achieved. Therefore, to clarify magnetic field and compare its roles in various welding techniques, this work carefully examines the use of magnetic field in recent welding techniques such as laser welding, laser‐melt inert gas hybrid welding, gas metal arc welding, tungsten inert gas welding, and resistance spot welding. Based on previous experiments and simulation research results, the effects of the Lorentz force on the arc, molten pool, and dendrite solidification during welding as well as the microstructure and mechanical properties of welded joints are discussed. The purpose of this work is to give a superficial introduction to the magnetic field‐assisted welding method in recent years, hoping to improve the welding practitioners’ understanding of the magnetic‐assisted welding method and provide a reference for researchers who use different welding methods.

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Section: Effect Of Magnetic Field On the Arc Weldingmentioning

confidence: 99%

Effects of Magnetic Fields in Arc Welding, Laser Welding, and Resistance Spot Welding: A Review

Shi

Cui

et al. 2022

Adv Eng Mater

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“…Schneider et al [10] found that porosity defects in the aluminium alloy were decreased obviously when the frequency and intensity of the alternating magnetic field were sufficient. Besides, influencing mechanism of magnetic field on welding has been studied by some scholars [11, 12]. The keyhole stability and energy distribution in molten pool could be changed by magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Investigation of weld formation and porosity in 5052 aluminium alloy laser-GMA hybrid welding assisted by magnetic field with different orientations

Liu

Lin

et al. 2022

Science and Technology of Welding and Joining

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Steady magnetic field with both orientations including longitudinal magnetic field (LMF) and transverse magnetic field (TMF) was used. The influence of LMF and TMF on weld formation, porosity and mechanical property of 5052 aluminium alloy laser-gas metal arc (GMA) hybrid welding was investigated. The shielding effect of hybrid plasmas on laser energy was weakened by TMF, leading to an increase in weld depth under TMF. Porosity rate was significantly reduced to 2.61% under TMF, because keyhole stability was improved, escaping channels for bubbles were increased, and solidification time of molten pool was prolonged. As a result, the highest tensile strength (174.7 MPa) of hybrid weld was obtained at TMF, owing to the lowest porosity rate.

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“…Voigt et al 31 constructed an induction coil of a new kind to preheat the filler wire and demonstrated stable arc to join mild steel plates. Zhao et al 32 demonstrated a method to avoid arc blow by introducing a magnetic field in transverse direction during welding of ferromagnetic Q235 steels.…”

Section: Introductionmentioning

confidence: 99%

Effect of hot wire feed rate on microstructural evolution and mechanical strength of pure nickel tubes joined using gas tungsten arc welding

Dinaharan

Palanivel

Alswat

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Industries increasingly pay attention to hot wire assisted gas tungsten arc welding (HWGTAW) in the present decade for joining several materials. Limited works were reported on HWGTAW of nickel and its alloys. In this investigation, HWGTAW was applied to weld pure nickel tubes (Ni 200 grade) having a thickness of 4 mm and an outer diameter of 44 mm. Joints were fabricated by varying the wire feed rate (1100–2400 mm/min in the interval of 300 mm/min). The increment in the wire feed rate increased the quantity of deposited material causing the geometry of the fusion zone to enlarge. Increasing the feed rate of filler wire reduced the peak temperature and avoided further coarsening of grains. The joints were cracks free and no significant percentage of porosity was detected. Traces of dislocations were found inside the fusion zone. Microstructure variation across the joints was categorized into three distinct zones similar to conventional GTAW. The hardness of the fusion zone was recorded to be the lowest. The ductility of the joints was exceptionally high.

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Effect of transverse magnetic field on weld formation and microstructure & properties of high-speed hot-wire tungsten inert gas welding joints

Cited by 14 publications

References 18 publications

Effects of Magnetic Fields in Arc Welding, Laser Welding, and Resistance Spot Welding: A Review

Effects of Magnetic Fields in Arc Welding, Laser Welding, and Resistance Spot Welding: A Review

Investigation of weld formation and porosity in 5052 aluminium alloy laser-GMA hybrid welding assisted by magnetic field with different orientations

Effect of hot wire feed rate on microstructural evolution and mechanical strength of pure nickel tubes joined using gas tungsten arc welding

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