Finite Element-Based Parametric Studies of Nugget Diameter and Temperature Distribution in the Resistance Spot Welding of AISI 304 and AISI 316L Sheets

Vigneshkumar, M.; Varthanan, P. Ashoka; Raj, Y. Maria Ambrose

doi:10.1007/s12666-018-1494-6

Cited by 22 publications

(4 citation statements)

References 13 publications

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“…Field emission scanning electron microscope (FESEM) is widely used to analyze the changes in the microstructural behavior of materials [21][22][23]. Microstructural and micro chemical analysis is performed on AA2024-T3 specimens before and after shot peening with nickel balls.…”

Section: Metallographic Investigations 451 Field Emission Scanningmentioning

confidence: 99%

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

Rajesh¹,

Varthanan²

2020

Mater. Res. Express

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Aluminium alloys are most suitable for light weight applications. This research paper investigates the fatigue strength of Aluminium alloy 2024-T3 after shot peeing process using nickel shots. Nickel shots are used in this research to investigate the influence of nickel on the fatigue strength of aluminum 2024-T3 alloy. Compressed air is used for shot peening process. Shot peening process parameter values are chosen based on response surface method (RSM) to conduct the experiments. Desirability approach is used to get the optimized values of process parameters. High cycle fatigue testing is performed to find the fatigue strength of specimens before and after shot peening process. An increase in the fatigue strength up to 34% is observed after peening using the nickel shots. FESEM and EDS tests revealed the presence of nickel on the surface of aluminium 2024-T3 specimen after shot penning with nickel shots.

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Section: Metallographic Investigations 451 Field Emission Scanningmentioning

confidence: 99%

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

Rajesh¹,

Varthanan²

2020

Mater. Res. Express

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“…The 316 L austenitic stainless steel grade exhibits increased corrosion resistance due to the presence of molybdenum (3%) and carbon (0.03%). The low carbon content helps to prevent the development of chromium carbide in the grain boundaries [5]. However, it is more expensive due to the higher nickel content (11.12%) in ASS 316 L. On the other hand, DSS 2205 is the best alternative to ASS for use in severe conditions due to its high strength, resistance to stress corrosion cracking and localized corrosion [6].…”

Section: Introductionmentioning

confidence: 99%

Examination on joining of 2 mm thick dissimilar stainless steel plates using resistance spot welding

Vignesh

2023

Eng. Res. Express

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In the present study, dissimilar metals such as austenitic stainless steel (ASS) and duplex stainless steel (DSS) with a thickness of 2 mm are joined by resistance spot welding process to investigate the welding metallurgy and failure behavior under different heat inputs. Non-uniform electrode impressions are observed on ASS and DSS sides due to their different thermal conductivity and electrical resistivity. The microstructure of the Fusion Zone (FZ) shows that higher heat input accelerates the growth of Intra Granular Austenite (IGA) due to faster cooling. Scanning electron microscopy (SEM) - Energy Dispersive X-ray (EDX) investigation at FZ showed that Chromium & Molybdenum decrease with increasing heat input due to a decrease in ferrite content. X-ray diffraction analysis confirmed that ferrite formation is limited at higher heat input. Microhardness study revealed that the higher hardness is in the middle of the weld nugget, which is due to the presence of equiaxed grains and IGA. The lowest hardness on the ASS side of Heat Affected Zone (HAZ) is due to the phenomenon of grain growth, and the HAZ DSS side has a higher hardness than DSS Base Metal (BM) due to the mechanism of solid solution strengthening. The tensile shear test showed that the tensile shear strength increases with the addition of heat. SEM Examination of the fracture surface revealed the presence of an equiaxed dimple structure on the ASS side, confirming ductile fracture, and torn bonds on the DSS side, confirming quasi-gap fracture due to the work-hardening ability of both plates. This study is carried out to understand the relationship between mechanical, metallurgical, and failure behaviours, because, researches on joining of dissimilar (AISI 316L and DSS 2205) stainless steel sheets using Resistance Spot Welding process is very limited and need to be studied in detail.

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“…Furthermore, the two-sheet spot-welded joint has been simulated considering different stainless steels 304 and 316. 17 In another study, Ertas and Akbulut 18 have studied the effect of electrode force on the fatigue behavior of tensile-shear testing (TST) specimens. It was found that by optimizing the amount of electrode force, the fatigue lives of the specimens can be enhanced up to 50%.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life analysis in the residual stress field due to resistance spot welding process considering different sheet thicknesses and dissimilar electrode geometries

Kashyzadeh

Farrahi

Ahmadi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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A typical vehicle body contains many 3-sheet spot-welded connections with different sheet thicknesses. In addition, the use of dissimilar electrode geometries is extremely common in the automotive industry. These two factors lead to an asymmetric spot weld with asymmetric residual stress distribution and heat-affected zone. This asymmetry has considerable effects on the fatigue behavior of these joints. Although many previous studies were dedicated to the analysis of spot welds, consideration of different electrode geometries and fatigue analysis of 3-sheet spot-welded joints are absent in the literature. To this end, in the present paper, the resistance spot weld process of three-sheet low carbon steels considering different sheet thicknesses and dissimilar electrode geometries (F0 and D0) was simulated. The finite element simulation presented, was verified by comparison to the experimental results for the nugget size and residual stress. Residual stress distribution diagrams were obtained with respect to the distance from the center of the nugget in four different paths. Eventually, fatigue life analysis of this type of joint was performed using the finite element method. The results indicate that the finite element-based fatigue results are within the scatter band of the experimental results (75/75 tolerance limits), and consequently, the provided algorithm can be reliably used to analyze the fatigue behavior of spot-welded connections with complex specifications.

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Finite Element-Based Parametric Studies of Nugget Diameter and Temperature Distribution in the Resistance Spot Welding of AISI 304 and AISI 316L Sheets

Cited by 22 publications

References 13 publications

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

Investigation of fatigue strength of aluminium 2024-T3 subjected to shot peening process by Ni shots

Examination on joining of 2 mm thick dissimilar stainless steel plates using resistance spot welding

Fatigue life analysis in the residual stress field due to resistance spot welding process considering different sheet thicknesses and dissimilar electrode geometries

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