Experimental Study on Mechanical Properties of Friction Stir Welded Dissimilar Joints of Aluminium Alloys AA8011-AA6082

Giridharan, K.; Sevvel, P.; Senthilnathan, K.; Muthukumaran, S.; Padmanabhan, S.

doi:10.4273/ijvss.11.2.04

Cited by 10 publications

(6 citation statements)

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“…This is because tapered tool pin profiles are always found to exhibit eccentricity. This eccentricity allows the smooth flow of the plasticized material around the tool pin profile region, thereby leading to the generation of a efficient stirring action, thereby contributing towards homogenous, finely spaced and refined grain structures in the zone of nugget [36] and [37]. Fig.…”

Section: Micro and Macrostructural Analysismentioning

confidence: 99%

Experimental Identification of Optimized Process Parameters for FSW of AZ91C Mg Alloy Using Quadratic Regression Models

Satheesh¹,

Sevvel²,

R³

2020

SV-JME

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This experimental work aims to devise and establish quadratic regression equations, including various input criteria of a friction stir welding (FSW) technique to predict and determine the responses during the fabrication of AZ91C Mg alloy joints. The input process parameters taken into consideration include the traversing speed of the tool, the speed of rotation of the tool, its pin profile (geometry) and the axial force. A five-level, 4 four-factor composite design (of central nature) was applied, and response surface methodology (RSM) was used to formulate quadratic regression models, to develop 3D response surface charts, and to anticipate the responses for various mechanical properties. The generated quadratic mathematical model was tested and validated using the technique of analysis of variance. Validation experimental trial results outlined in the form of scatter diagrams revealed precedented coincidence with that of the generated models. The AZ91C Mg alloy joints obtained using the tool having taper cylindrical pin geometry employed at 1045 rpm, 1.5 mm/s traversing speed, under the exertion of an axial load of 4.87 kN was found to exhibit improved mechanical properties.

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Section: Micro and Macrostructural Analysismentioning

confidence: 99%

Experimental Identification of Optimized Process Parameters for FSW of AZ91C Mg Alloy Using Quadratic Regression Models

Satheesh¹,

Sevvel²,

R³

2020

SV-JME

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“…The ageing procedures and its effect on microstructure were investigated in Al-Zn-Mg-Cu alloys 20 . FSW of aluminium was conducted without melting it in the weld nugget 21 . Thermomechanical-affected zone (TMT) and rotational speed were studied in dissimilar joints AA7075 and AA2024 22 .…”

Section: Introductionmentioning

confidence: 99%

Microstructural Analysis and Mechanical Behaviour of Copper CDA 101/AISI-SAE 1010 Dissimilar Metal Welds Processed by Friction Stir Welding

Giridharan¹,

Sevvel²,

Stalin

et al. 2022

Mat. Res.

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In this work, low-carbon steel AISI-SAE grade 1010 with copper grade CDA 101 was joined by friction stir welding (FSW) using a tapered pin profiled tool. The rotational speed of the tool is 900 rpm, a traverse rate of 30 mm/min, and an axial force of 5 kN were used to produce the joints. The microstructural analysis and mechanical properties of the weld joints have been successfully examined. The optical microscopy, scanning electron microscopy, and X-ray diffraction (XRD) techniques were performed to examine the macropatterns and micropatterns of the welded joints. The tensile and hardness test was performed to evaluate the mechanical behaviours of the FSW joints. The fine ferrite grain features with uniform size were obtained in the microstructure of the nugget zone (stir zone). It is purely influenced by the alternating dynamic rearrangement (recrystallization) mechanism. High hardness was identified in the stir zone, even as the slightest stability was established in the heat-affected zone. The tensile investigation proposed that all the joints explored just lesser unbending nature than the parent material. The tensile strength of 181.5 MPa, the hardness of 144 VHN, and elongation of 14.03% were observed for the welded samples. The better properties for the weld joints were attained at 900 rpm spindle speed and tool traverse speed of 30 mm/min. The FSW is an attractive material joining process for both similar and dissimilar materials compared to other conventional types of joining processes, such as aerospace, marine engineering, shipbuilding, and industrial sector applications.

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“…Aluminum alloys based on magnesium offer superior strength-to-weight ratios, making them suitable for high-performance and high-durability maritime applications. 1 When it comes to extreme conditions like seawater and industrial chemical environments. The Base Material (BM), AA8011 alloy, stands out for its outstanding high resistance levels.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the effect of process parameters on mechanical and microstructural properties of AA8011 similar FSW weld joints

Chakravarthi¹,

Giridharan²,

Stalin

et al. 2022

Advances in Mechanical Engineering

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Friction stir welding (FSW) factors significantly impact the welding characteristics of AA 8011 and similar alloys weld joints produced by FSW. The tool pin profiles influence joint characteristics, weld quality, and joint strength. This study used three tool pin profiles to create weld connections at three different tool rotation rates and various welding speeds. Design of experiments (DOE) was utilized to execute complete full factorial experiments. The welded joints’ mechanical characteristics were examined using hardness and tensile tests at room temperature. The average maximum hardness number was 38.28 HRB with the tapered tool at 1300 rpm spindle speed and welding speed of 20 mm/min at 5 kN unvarying axial force of the whole operation. The lowest hardness value was 30 HRB using a taper threaded pin profile tool, rotating at 1200 rpm and welding at 60 mm/min. When the taper pin profile tool was used at 1500 rpm, the highest tensile strength of the weld joint was achieved, which was the closest value of the parent material. At the same welding speed of 20 mm/min, the taper threaded pin tool at 1300 rpm produces the lowest tensile strength of 84.16 MPa, made utilizing a taper threaded pin tool.

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Experimental Study on Mechanical Properties of Friction Stir Welded Dissimilar Joints of Aluminium Alloys AA8011-AA6082

Cited by 10 publications

References 0 publications

Experimental Identification of Optimized Process Parameters for FSW of AZ91C Mg Alloy Using Quadratic Regression Models

Experimental Identification of Optimized Process Parameters for FSW of AZ91C Mg Alloy Using Quadratic Regression Models

Microstructural Analysis and Mechanical Behaviour of Copper CDA 101/AISI-SAE 1010 Dissimilar Metal Welds Processed by Friction Stir Welding

Investigation on the effect of process parameters on mechanical and microstructural properties of AA8011 similar FSW weld joints

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