Weldability of Nickel-Free Austenitic Stainless Steel Thin Sheet by Small-Scale Resistance Spot Welding

Fukumoto, Satoshi; Matsuo, Taiju; Kuroda, Daisuke; Yamamoto, Atsushi

doi:10.2320/matertrans.mra2008285

Cited by 7 publications

(4 citation statements)

References 26 publications

(28 reference statements)

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“…Fukumoto and co-authors reported that SSRSW exhibits a fast cooling rate, as well as fast heating rate, and may cause porosity in the joint (64). Fukumoto and co-authors reported that SSRSW exhibits a fast cooling rate, as well as fast heating rate, and may cause porosity in the joint (64).…”

Section: Electronics Medical Devices and Precision Instrumentsmentioning

confidence: 99%

Welding Defects and Implications on Welded Assemblies

Yusof

Jamaluddin

2014

Comprehensive Materials Processing

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Section: Electronics Medical Devices and Precision Instrumentsmentioning

confidence: 99%

Welding Defects and Implications on Welded Assemblies

Yusof

Jamaluddin

2014

Comprehensive Materials Processing

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“…Hafez [13] performed resistance spot welding of austenitic stainless steel AISI 304L in different atmospheres and found that, under moderate heat input, the corrosion potential of nuggets welded under argon atmosphere exhibited more significant improvement than those welded under nitrogen or air atmospheres. Fukumoto et al [14] investigated the feasibility and microstructural development of high nitrogen-containing nickel-free austenitic stainless steel by resistance spot welding. A small amount of δ ferrite was formed only at the grain boundary in the weld, and chromium nitride precipitation was observed at the grain boundary.…”

Section: Introductionmentioning

confidence: 99%

Study on the Microstructure and Properties of Flash-Butt Welding Joints of High Nitrogen Steel

Zhao

Liu

et al. 2023

Metals

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A thermomechanical coupling model for the solid-state flashing process of high nitrogen steel was established, based on finite element simulations and experiments. The effect of flash current on the microstructure and mechanical properties of the welded joint was investigated, and the temperature field of the flash-butt welding (FBW) process was simulated. The phase composition of the joint was determined according to the phase diagram and cooling curve. In addition, the joint with optimal parameters was subjected to full immersion corrosion tests. The results demonstrated that the interface structure was composed of austenite and δ-ferrite with a thyristor angle (flash current) of 45°. The microstructure of the overheated zone (OZ) was composed of austenite, ferrite and a small amount of the M2 phase, in which the heat-affected zone exhibited a single-phase austenite microstructure. The joint hardness displayed a “V” shaped distribution with the lowest interface hardness. As the flash current increased, the hardness and tensile strength of the interface area of the joint first increased and then decreased, with a maximum tensile strength of 902 MPa at 45°. During the full immersion corrosion tests, the joint exhibited the most serious corrosion in the interface center and gradually reduced corrosion on both sides.

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“…[1][2][3][4][5][6] Researches on the RMW of a variety of materials including crossed nickel wire, 7) stainless steel wire, 8) Pt wire to stainless steel 9) and nickel-free austenitic stainless steel 10) etc. had been performed.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Resistance Microwelding of Insulated Copper Wire to Phosphor Bronze Sheet

Bing-hua

Guo

et al. 2011

Mater. Trans.

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Resistance microwelding of fine insulated copper wire to phosphor bronze thin sheet without prior removal of insulation is of increasing industrial importance for electrical connections in downsized electronic devices, but the understanding of the process is very limited. Therefore, this work aims to clarify the basic joining mechanism. The effects of main process parameters (welding current, weld time and electrode force) and joint microstructure were investigated by tensile testing, optical microscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. A welding mechanism with main process stages (cold wire deformation, insulation melting and displacing, and solid-state bonding) is proposed. It should be pointed out that there is no weld nugget forming at the faying surfaces.

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Weldability of Nickel-Free Austenitic Stainless Steel Thin Sheet by Small-Scale Resistance Spot Welding

Cited by 7 publications

References 26 publications

Welding Defects and Implications on Welded Assemblies

Welding Defects and Implications on Welded Assemblies

Study on the Microstructure and Properties of Flash-Butt Welding Joints of High Nitrogen Steel

Mechanism of Resistance Microwelding of Insulated Copper Wire to Phosphor Bronze Sheet

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