Modeling of Probeless Friction Stir Spot Welding of AA2024/AISI304 Steel Lap Joint

Rashkovets, Mariia; Contuzzi, Nicola; Casalino, Giuseppe

doi:10.3390/ma15228205

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…A previous study has shown that the material flow within the stir zone (SZ) of an aluminum plate is axisymmetric under all the parameters used [26]. Identical behavior was found in the present study.…”

Section: Microstructure Of the Upper Platesupporting

confidence: 84%

Dissimilar Probeless Friction Stir Spot Welding of Aluminum Alloy and USIBOR®1500-AS Steel Thin Plates

Rashkovets,

Palmieri,

Contuzzi

et al. 2024

JMMP

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Lap joining of an aluminum AA6082-T6 plate and a UHSS steel plate coated with an Al-Si layer was performed using Probeless Friction Stir Spot Welding (P-FSSW). The dwell time and rotational speed were controlled in the range of 10–15 s and 1000–1500 rpm, respectively. For all the samples, thermo-mechanical deformation occurred solely within the upper AA6082 plate. A refined grain structure was formed in the aluminum plate close to the surface. The dwell time was responsible for the intensity of the material flow, resulting in stirring between the Al-Si layer and the aluminum plate at 15 s. The microhardness distribution corresponded to the microstructure features.

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Section: Microstructure Of the Upper Platesupporting

confidence: 84%

Dissimilar Probeless Friction Stir Spot Welding of Aluminum Alloy and USIBOR®1500-AS Steel Thin Plates

Rashkovets,

Palmieri,

Contuzzi

et al. 2024

JMMP

Self Cite

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“…The maximum relative error between experimental and numerical data was 7%. The thermal field was influenced by the different thermal conductivity and thermal contact conductance (TCC) of used materials [22], [26]. TCC induced a «temperature jump» along the interfaces (welding lines) between each plate and inversion of the thermal flux.…”

Section: Numerical Thermal Field and Materials Flowmentioning

confidence: 99%

“…By both experimental and numerical approach to P-FSSW process investigation, short DT from 1 to 6 s was examined [18], [21]. Moreover, a steady-state condition was demonstrated after a longer DT [22].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of probeless friction stir spot welding of a multilayer aluminium alloy compound

Contuzzi

Rashkovets

Casalino

2023

Science and Technology of Welding and Joining

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This paper presents the experimental and numerical results of the influence of dwell time (30, 60, 90 s), down force (2450, 4900, 7350 N), and rotational speed (1000, 1500, 2000 RPM) on microstructure, microhardness, and material flow during solid-state welding. Probeless friction stir spot welding (P-FSSW) with a flat tool shoulder was assisted to form a metal compound of AA2024, AA6082, and AA5754 aluminium plates with different thicknesses in lap configuration. The analysis of the experimental data and numerical results showed that down force had a significant influence on the material flow and the quality of the welds. High friction energy, and subsequent intensive material flow, promoted the vortexes formation, which improve metals mixing and grain refinements.

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“…2024 aluminum alloy and 304 steel are two kinds of metals that are widely used in the field of aerospace, so research on the joining of these two metals by the FSW process is necessary. Rashkovets et al [32] performed the friction stir spot welding (FSSW) process of 2024 aluminum alloy and 304 steel and this process was a variant of FSW. In view of this, the UAFSLW of 2024 aluminum alloy to 304 steel was performed under the welding tool slightly plunging into the lower steel plate in this study.…”

Section: Introductionmentioning

confidence: 99%

Improved Interface Morphology and Failure Load of Ultrasonic-Assisted Friction Stir Lap Welding Joint of 2024 Aluminum Alloy to 304 Stainless Steel

Han,

Yu,

Yan

et al. 2024

Metals

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Achieving high-strength welding joint of aluminum to steel is a highly pressing and challenging task in the manufacturing industries, and friction stir lap welding (FSLW) has advantages for joining these two metals. To further heighten the strength of dissimilar aluminum and steel metals (Al/steel) FSLW joint, the ultrasonic-assisted FSLW (UAFSLW) process was used, and the upper 2024-T4 aluminum alloy and the lower 304 stainless steel were chosen as research object. The results show that the addition of ultrasound eliminates the micro pores, changes the aluminum-rich intermetallic compounds (IMCs) into the iron-rich IMCs and enhances the micro and macro mechanical interlocking structures along the Al/steel lap interface. Under the rational IMCs layer thickness lower than 1.5 μm, the UAFSLW joint has the failure load higher than the traditional FSLW joint. The maximum failure load of UAFSLW joint reaches 7.06 kN, and the loading capacity of this joint is higher than that of reported Al/steel traditional FSLW joint. The UAFSLW process is an effective way to fabricate the high-strength Al/steel lap joint.

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Modeling of Probeless Friction Stir Spot Welding of AA2024/AISI304 Steel Lap Joint

Cited by 4 publications

References 25 publications

Dissimilar Probeless Friction Stir Spot Welding of Aluminum Alloy and USIBOR®1500-AS Steel Thin Plates

Dissimilar Probeless Friction Stir Spot Welding of Aluminum Alloy and USIBOR®1500-AS Steel Thin Plates

Numerical and experimental investigation of probeless friction stir spot welding of a multilayer aluminium alloy compound

Improved Interface Morphology and Failure Load of Ultrasonic-Assisted Friction Stir Lap Welding Joint of 2024 Aluminum Alloy to 304 Stainless Steel

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