Effects of Electrode Face Thickness on Resistance Spot Weldability of Aluminium Alloy 6061

김, 동철; 조, 형근; 김, 영민; 강, 문진; 황, 인성

doi:10.5781/jwj.2020.38.1.7

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Schematic of RSW process [7] The main benefit of RSW is that it is easy to automate, not expensive to install welding machines and it can use for a wide range of materials such as high-strength steel, aluminum and low carbon steel [8][9][10][11]. Electrode force, welding time, welding current, and sheet thickness are all factors that affect RSW, but the welding current is by far the most crucial factor [12]. Overload failure and fatigue failure are the two main categories of spot weld failure phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Analysis of double resistance spot welding's failure in high strength low alloy steel

2023

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High strength low alloy steel (HSLA DOCOL 500 LA) is utilized in the automotive structure because of its superior qualities such as good fatigue resistance, a high strength-to-weight ratio, assisting in reducing the weight of the vehicle, increasing fuel efficiency and lower CO2 emissions. Resistance Spot Welding (RSW) is the most welding technique that is used to join automobile parts together. This study investigated the RSW process for high-strength steel. By utilizing the Taguchi approach, the optimization process for double spot nuggets with the principal welding parameters of welding current, welding time, and electrode force was carried out. The values of optimum parameters were 8800Amp for welding current, welding time of 30 cycles and 2560 N for electrode force. Mechanical and microstructure tests were carried out to study the failure modes while the fatigue test was achieved to obtain the fatigue endurance limit and it was at a maximum load 1500 N and during the fatigue test two types of failure happened: full pull-out failure and cracks around the nugget zone.

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Section: Introductionmentioning

confidence: 99%

Analysis of double resistance spot welding's failure in high strength low alloy steel

2023

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Liquid Metal Embrittlement of Galvanized TRIP Steels in Resistance Spot Welding

Jeon

Sharma

Jung

2020

Metals

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Liquid metal embrittlement (LME) in Zn-coated steels is a serious issue in automotive design. The risk of rising LME surface cracks in resistance spot welding (RSW) of Zn-coated high strength steels has triggered significant research activities across the globe. This paper presents a state-of-the-art review of the various phenomena and issues related to LME during RSW. Various aspects of LME surface cracks have been described in this review, focusing on the macro- and microscopic features of LME, spot weld cracks, the sensitivity of the LME cracks towards surface locations, welding conditions, and susceptibility to high strength and galvanized steels. We also focus on the effects of various processing factors, such as temperature, stress, microstructure, and the nature of the galvanized layer, related to studies with actual spot welds LME cracks. Finally, we summarize the possible mechanisms of embrittlement and the remedies for minimizing LME cracks, with suitable guidelines to suppress surface cracks during RSW.

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Effects of Electrode Face Thickness on Resistance Spot Weldability of Aluminium Alloy 6061

Cited by 2 publications

References 5 publications

Analysis of double resistance spot welding's failure in high strength low alloy steel

Analysis of double resistance spot welding's failure in high strength low alloy steel

Liquid Metal Embrittlement of Galvanized TRIP Steels in Resistance Spot Welding

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