Electromagnetic stirring control for resistance spot welding of SiCp/Al composites

Lin, Qi; Li, Zhuoran; Zhang, Qingxin; Wu, Wei; Huang, Ning; Li, Yongbing

doi:10.1016/j.jmapro.2021.06.048

Cited by 17 publications

(9 citation statements)

References 15 publications

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Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

“…Except the studies of Xu et al [ 106 ] and Ao et al, [ 107 ] Qi and Li et al [ 74,77,108–112 ] explored the effect of magnetic field on RSW in a more comprehensive and detailed way. In these studies, the single‐side magnet, [ 109,111 ] bilateral magnet, [ 111 ] and double‐side axial magnet [ 74,77,108,112 ] were used. Qi and Li et al [ 74,108,109,112 ] found that the internal shrinkage cavities and even the residual solidification line in nugget center of austenitic stainless steels can be effectively eliminated during the MA‐RSW.…”

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

“…In these studies, the single‐side magnet, [ 109,111 ] bilateral magnet, [ 111 ] and double‐side axial magnet [ 74,77,108,112 ] were used. Qi and Li et al [ 74,108,109,112 ] found that the internal shrinkage cavities and even the residual solidification line in nugget center of austenitic stainless steels can be effectively eliminated during the MA‐RSW. Besides, the nugget size of MA‐RSW weld is always wider and thinner than that of RSW weld during all the welding condition.…”

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

“…Second, the solidification mode transforms from sequential solidification mode into simultaneous solidification mode. [ 74,108,109,111,112 ] At RSW nugget, as shown in Figure 20a,b, the lower solidification rate promotes a wider columnar grain zone (CGZ) in MA‐RSW nuggets. The difference of CGZ results from the synergistic effects of the concentration of the high solute elements and low solidification rate.…”

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

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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: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

Section: Magnetic Field‐assisted Resistance Spot Weldingmentioning

confidence: 99%

See 2 more Smart Citations

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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“…On the other hand, fast cooling rate of laser welding process would shorten the diffusion durations of active element, which led to the segregation of active elements. Therefore, some aiding methods, such as ultrasonic or electrical stirring, could be employed to promote uniform distribution of active elements and refinement of microstructure (Yan et al, 2011;Qi et al, 2021) while this relevant research was rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of Welding Process on Microstructure and Properties of Laser Welding of SiCp/6061 Al Matrix Composite

Cao

Zhu

et al. 2021

Front. Mater.

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Direct laser welding, laser welding with Ti interlayer, and ultrasonic-assisted laser welding with Ti interlayer were used to join SiCp/6061 Al matrix composites. Microstructural evolutions, compositional distributions and tensile strengths under three processes were compared and analyzed. The experimental results showed that ultrasonic-assisted laser welding with Ti interlayer can obtain joints with good continuity and without obvious defects. Due to combined effects of Ti interlayer and ultrasonic, formation of brittle Al4C3 phase was greatly suppressed and fine TiC precipitates were also uniformly distributed in weld metal. The strength shown by the welded joints could reach up to 77.2% of the strength of the base material. Because of the internal defects (voids and pores) and the generated large numbers of brittle phases of Al4C3 in weld metal, the joint strength shown by the other two techniques, direct laser welding and laser welding with Ti interlayer, only reached 49.4 and 64.8% of the base material strength, respectively.

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Implementation of external magnetic field to improve strength of St37 steel resistance spot weld

Mohammed Nafea,

Elyasi,

Aghajani Derazkola

2024

Int J Adv Manuf Technol

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The magnetic assist technique involves the interaction between an external magnetic field and electrical current which produces Lorentz force that influences the flow pattern of molten metal and ultimately impacts the appearance and microstructure of the weld. Many parameters may influence on this process such as welding current, time, and force as well as the working magnet distance (MD). In this study, the effects of the distance between the permanent magnet’s MD on the heat-affected zone (HAZ) and weld nugget zone (NZ) were examined through mechanical and macro- and microstructural analyses. The results demonstrated that MD has a strong influence on the magnetic flux density which determines the joint appearance, quality, and microstructure of St37 steel. Results showed that with increasing MD, HAZ increased from 8 to 22 mm2 while NZ decreased from 26 to 19 mm2, and also, the grain size increased with increasing MD and reaching 48 µm at MD was set to 9 cm. Moreover, hardness decreased at both areas through increasing MD from (120–110) HV at HAZ and from (170–150) HV at NZ. Under the action of (electromagnetic filed) EMF, weld tensile shear strength and the cross tensile strength give the highest values equal to 172 MPa and 155 MPa, respectively, when MD is set to 4.5 cm. Besides, soundness joint was obtained at MD = 4.5 cm which confirms that this is the best distance between magnets.

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Electromagnetic stirring control for resistance spot welding of SiCp/Al composites

Cited by 17 publications

References 15 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

Influence of Welding Process on Microstructure and Properties of Laser Welding of SiCp/6061 Al Matrix Composite

Implementation of external magnetic field to improve strength of St37 steel resistance spot weld

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