Numerical simulation of weld nugget in resistance spot welding process

Abhishek, Kumar; Panda, Sikta; Ghosh, Gaurab Kumar; Patel, Ritesh Kumar

doi:10.1016/j.matpr.2020.04.901

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…Figure 3c displays the distribution of hardness in both the base metal and the fusion zone. The hardness values of the duplex stainless steel are found to be superior to the austenitic stainless steel [16]. The hardness at the fusion zone is found to be larger than that of the duplex steel due to the phase change [17].…”

Section: Resultsmentioning

confidence: 83%

Insights and Implications: Unraveling Critical Factors in Resistance Spot Welding of Dissimilar Metals through SS 347 and DSS 2205 Welds

M.,

D.,

2023

RAiSE-2023

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Section: Resultsmentioning

confidence: 83%

Insights and Implications: Unraveling Critical Factors in Resistance Spot Welding of Dissimilar Metals through SS 347 and DSS 2205 Welds

M.,

D.,

2023

RAiSE-2023

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“…Studies showed that the most important parameter for the optimum quality, strength and fatigue life of the weld joint is the form of the nugget that forms between the sheet metals during the spot welding process. [23,[33][34][35]. There are many spot welding parameters such as electrode diameter, current holding time, clamping time, electrode force, welding current etc.…”

Section: Optimal Weld Current Proceduresmentioning

confidence: 99%

Fatigue Properties of Zinc Coated Low Carbon Steel Sheet Joints by the Means of Spot Welding

Çetkin

2024

DEUFMD

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EN 10346:2015 DX52D+Z steel is a low-carbon, zinc-coated steel suitable for cold forming, widely used in the automotive industry due to its superior formability despite its low strength. Sheets produced in different sizes and forms are annealed by passing through the continuous galvanizing line after cold rolling. In this study, fatigue properties of these steels which were joined by spot welding with low welding current and high welding cycles, were measured and failure characterization was made, too. Tensile testing was made using a number of lap joints with different parameters and the variation of hardness within the weld area was also investigated. During the fatigue testing, crack initiation and propagation have been experimentally determined. A significant increase in hardness was observed from the base metal to the weld nugget, and the welding process caused a 38% reduction in the strength of the base material due to the heat affect from the joint. In the microhardness test, the highest hardness value was measured in the weld nugget heat affected zone (228.4 HV), and the hardness of the base metal was 169.4 HV. It has been determined that welded joints have infinite life below approximately 20% of the maximum tensile load.

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“…In addition, the change in current distribution will also lead to the change of heat production process. [27][28][29][30][31][32][33] Furthermore, the mechanical properties of the joints are greatly influenced by the different lap forms and thickness combinations, and Zr alloys are prone to post-welding defects, further exacerbating the welding difficulties. [34][35][36][37] The existing research on RSW of Zr alloys is insufficient to meet the practical requirements of engineering.…”

Section: Introductionmentioning

confidence: 99%

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

Li,

Yang,

et al. 2024

Adv Eng Mater

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Triple sheets of R60702 zirconium (Zr) alloy were joined together using the resistance spot welding (RSW) process in this study. The nugget formation mechanism and microstructure of the weld joint in three equal‐thickness sheets of R60702 Zr alloy were studied. The results revealed that the initial nugget formed at the top of the intermediate sheet, and subsequently expanded both radially and axially until a complete nugget was formed. The fusion zone (FZ) exhibited a martensitic microstructure, while the heat affected zone (HAZ) consisted of two regions: coarse grain heat‐affected zone (CGHAZ) and fine grain heat‐affected zone (FGHAZ). The hardness in the FZ was higher than that of the HAZ and the base metal (BM). Furthermore, the tensile shear force and fracture mode of the weld nuggets were also studied. The weld joints exhibited a maximum tensile‐shear load of 5.7 kN under the following welding parameters: welding current of 14 kA, welding time of 150 ms, and welding force of 3.6 kN. Three failure modes were identified interface fracture (IF), partial button fracture (PBF), and button fracture (BF).This article is protected by copyright. All rights reserved.

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Numerical simulation of weld nugget in resistance spot welding process

Cited by 7 publications

References 8 publications

Insights and Implications: Unraveling Critical Factors in Resistance Spot Welding of Dissimilar Metals through SS 347 and DSS 2205 Welds

Insights and Implications: Unraveling Critical Factors in Resistance Spot Welding of Dissimilar Metals through SS 347 and DSS 2205 Welds

Fatigue Properties of Zinc Coated Low Carbon Steel Sheet Joints by the Means of Spot Welding

Weld Growth Mechanism, Microstructure, and Mechanical Properties of Resistance‐Spot‐Welded Joint of R60702 Zirconium‐Alloy Triple Sheets

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