Influence of FSW Process Parameters on Formability and Mechanical Properties of Tailor Welded Blanks AA6082-T6 and AA5083-O Using RSM with GRA-PCA Approach

Kumar, Praveen; Sharma, Satpal

doi:10.1007/s12666-021-02255-0

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…These factors were optimized using Box-Behnken design (BBD) in conjunction with the RSM method. Kumar and Sharma [27] experimented with welding dissimilar joints of AA5083-O and AA6082-T6 aluminum alloys of tailor-welded blanks using RSM to determine the factors involved in FSW welding. Chakradhar and Narendranath [28] designed an experiment using the RSM method for joining an AA6061 aluminum alloy using the FSW process to determine the optimal parameters for tensile strength and weld hardness.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the optimal parameters for butt joints in a friction stir welding (FSW) process with dissimilar aluminium alloys

Harachai¹,

Prasomthong

2023

Mater. Res. Express

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Aluminum alloys are used in the modern automotive industry because they are lightweight. However, it is establised that conventional fusion welding processes affect weld performance. In this study, friction stir welding (FSW), also known as solid-state welding, was used to weld dissimilar aluminum alloys, AA6061-T6 and AA5083plates. Response surface methodology based on Box-Behnken design (BBD) was used to investigate the appropriate process parameters. In this study, the effects of rotation speed (S), welding feed rate (f), and work angle (θ) were investigated. These three factors were examined at three levels over 17 experimental runs. The design was used to conduct experiments and develop mathematical regression models. Variance analysis was performed to examine the adequacy of the developed models. Finally, the effects of the process parameters on the mechanical properties of welded alloyes were investigated using mathematical models based on the macrostructure, microstructure, chemical composition, and fracture characteristics of the joints using SEM. The investigation found that the optimum welding parameters are a rotational speed of 777 rpm, welding speed of 44 mm/min, and a work angle of 0.75o. Furthermore, the results confirm that the mathematical models and experiments are consistent.

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Section: Introductionmentioning

confidence: 99%

Investigation of the optimal parameters for butt joints in a friction stir welding (FSW) process with dissimilar aluminium alloys

Harachai¹,

Prasomthong

2023

Mater. Res. Express

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“…From these literature review [20][21][22][23][24][25], it can be understood that, it is significant to examine the mechanical relevant attributes of the joints so as to characterize its efficiency. Usually, a joint attained employing FSW process is characterized by being comprising of three distinctive zones namely, heat impacted zone, thermomechanically impacted zone and nugget zone, also sometimes termed as dynamically recrystallized zone.…”

Section: Introductionmentioning

confidence: 99%

Establishment of empirical relations amidst mechanical attributes of friction stir welded distinctive alloys of Mg and optimized process parameters

et al. 2023

Mater. Res. Express

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This experimental investigation aims to formulate quadratic regression based empirical model taking into account the parameters of friction stir welding (FSW) process for predicting the optimized process parameters to maximize the response (i.e., ultimate tensile strength) of the distinctive alloys of Mg joints. Parameters of FSW process taken into consideration includes tool’s traverse speed, axial force and rotational speed of tool and response being the fabricated joint’s tensile strength. A central composite rotatable category 3–factor, 5 level design based matrix was formulated and response surface methodology was used to obtain regression based models, to generate contour plots and to visualize the interactive impacts of parameters on the joint’s tensile strength. Formulated quadratic regression based model was validated employing analysis of variance. Comparison amidst the realistic and anticipated values of the response announced the superior fitting accuracy of the formulated quadratic model. For a constant tool’s rotational speed (of 1000 rpm to 1250 rpm), the tensile strength was observed to be highly sensitive to the axial force values than the tool traverse speed values. Mean tensile strength of the friction stir welded AZ31B, AZ80A, AZ91C, AM50A and ZK51A-T5 Mg joints during the employment of optimized process parameters were found to be 217.5 MPa, 251.4 MPa, 231.9 MPa, 192.1 MPa and 173.2 MPa respectively, thereby exhibiting perfect agreement with the anticipated values.

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“…In [22], the Limiting Dome Height (LDH) biaxial test was used to investigate the forming performance, the formability of a welded joint is compared to base materials. In [23], authors propose an optimization study of the FSW process parameters which gives the maximum responses of the dome height. In [10], the mechanical performance of the FSWed AA2024-T4 aluminum sheets, at 400°C temperature, was assessed by uniaxial and biaxial free bulging tests.…”

Section: Introductionmentioning

confidence: 99%

Assessment of friction stir welding joints of AA2017-T4 aluminum by disc pressure mechanical tests

Djili,

Bezzazi,

Habouss

et al. 2023

J Appl Eng Science

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Precipitation hardening aluminium alloy sheets AA2017-T4 are welded by FSW on a conventional FSW tool. A macrograph of the cross section of the butt-welded joint shows the classical zones for such welding, namely the nugget zone, the thermo-mechanically affected zone and the heat affected zone. Scanning Electron Microscopy displays a grain refining and a re-formation of the precipitates in the nugget zone. Micro-hardness measurements on the cross-section perpendicular to the welding direction give the standard W-profile of the hardness for such welding, with as expected, the relatively highest value at the joint center (nugget zone). To assess the mechanical performance of the FSW welded joint, the Disk Pressure Test (DPT) is used. It shows a failure pressure for the welded specimen that is 17% lower than the base material. The fracture surface micrographs clearly show a thickness reduction at break that is ~36% higher for the base material than the welding joint and a ductile fracture mode for both specimens.

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Influence of FSW Process Parameters on Formability and Mechanical Properties of Tailor Welded Blanks AA6082-T6 and AA5083-O Using RSM with GRA-PCA Approach

Cited by 7 publications

References 33 publications

Investigation of the optimal parameters for butt joints in a friction stir welding (FSW) process with dissimilar aluminium alloys

Investigation of the optimal parameters for butt joints in a friction stir welding (FSW) process with dissimilar aluminium alloys

Establishment of empirical relations amidst mechanical attributes of friction stir welded distinctive alloys of Mg and optimized process parameters

Assessment of friction stir welding joints of AA2017-T4 aluminum by disc pressure mechanical tests

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