Effect of friction stir lap welding conditions on joint strength of aluminium alloy 6060

Yazdanian, S.; Chen, Z W

doi:10.1088/1757-899x/4/1/012021

Cited by 10 publications

(14 citation statements)

References 5 publications

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“…This variation in tool geometry was due to the different requirements in terms of material flow, in order to avoid formation of defects which vary according to joint configuration. While in butt joints, it is aimed to achieve a homogeneous mixing throughout the depth of the weld piece avoiding root flaws; in lap joints, the main goal is to have a wide nugget (larger joint surface) and decrease or avoid the hook defect, which severely reduces the joint strength [18]. As for T joints, it is required to fulfil the joint fillets, as well as avoiding tunnel defects and kissing bond defects [24].…”

Section: Experimental Workmentioning

confidence: 99%

“…This is normally referred to hooking problem, and it is responsible for a reduction in effective sheet thickness, which has obvious consequences in the strength of the joint, as verified in Zhang et al [17]. The hooking phenomenon was studied in Yazdanian and Chen [18], where the effect of probe length, welding speed and rotational speed was studied. It was shown that a longer probe length did not result in stronger joints, as sufficient plastic stirring occurred with probes slightly longer than the sheet thickness.…”

Section: Introductionmentioning

confidence: 98%

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Ultimate tensile strength optimization of different FSW aluminium alloy joints

Silva

Braga

Figueiredo

et al. 2015

Int J Adv Manuf Technol

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Friction stir welding (FSW) is a highly reliable joining process. However, there is still lack of optimized FSW parameters for different joint configurations. The present manuscript presents a set of optimization studies for different friction stir welding joint geometries of AA6082-T6 aluminium alloy: butt, lap and T joints. The optimization process was performed using Taguchi orthogonal arrays (OA) for designing experiments, analyses of the average effects (main effect plot) and variance (ANOVA). Welded joints were manufactured according to orthogonal arrays, selected using the Taguchi method, for each type of joint, and the ultimate tensile strength (UTS) was evaluated for statistical optimization. As a major asset for the current state of the art, this manuscript contribution is focused on the determination of the most relevant FSW parameters on UTS for a complete range of joints, as well as their interactions. In the particular case of lap and T joints, parameter optimization studies are lacking in the literature, and as such, this work aims at tackling the issue. The parameter combinations to achieve the best mechanical properties for each joint configuration were derived.

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Section: Experimental Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Ultimate tensile strength optimization of different FSW aluminium alloy joints

Silva

Braga

Figueiredo

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…It was found that the use of threaded pin leads to improvement in mechanical and metallurgical properties. Yazdanion et.al [6] analyzed the effect of FSLW parameters on joint strength of AA6060 and found that the tool rotational speed and pin length are the major influencing parameters to obtain the sound joints.…”

Section: Introductionmentioning

confidence: 99%

“…From the literature review [3][4][5][6][7][8][9][10][11][12][13][14][15][16], it is understood that the FSW parameters play major role in deciding the quality of the joints. Though lot of research works have been carried out to understand the effect of FSLW parameters individually on mechanical properties and microstructural charactertics, no attempt has been made so far to study the combined effect of all the parameters in a scientific method.…”

Section: Introductionmentioning

confidence: 99%

Identifying Combination of Friction Stir Welding Parameters to Maximize Strength of Lap Joints of AA2014-T6 Aluminum Alloy

Rajendrana

Srinivasan

Balasubramanian

et al. 2017

Archives of Mechanical Technology and Materials

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A B S T R A C TAA2014 aluminum alloy (Al-Cu alloy) has been widely utilized in fabrication of lightweight structures like aircraft structures, demanding high strength to weight ratio and good corrosion resistance. The fusion welding of these alloys will lead to solidification problems such as hot cracking. Friction stir welding is a new solid state welding process, in which the material being welded does not melt and recast. Lot of research works have been carried out by many researchers to optimize process parameters and establish empirical relationships to predict tensile strength of friction stir welded butt joints of aluminum alloys. However, very few investigations have been carried out on friction stir welded lap joints of aluminum alloys. Hence, in this investigation, an attempt has been made to optimize friction stir lap welding (FSLW) parameters to attain maximum tensile strength using statistical tools such as design of experiment (DoE), analysis of variance (ANOVA), response graph and contour plots. By this method, it is found that maximum tensile shear fracture load of 12.76 kN can be achieved if a joint is made using tool rotational speed of 900 rpm, welding speed of 110 mm/min, tool shoulder diameter of 12 mm and tool tilt angle of 1.5•.

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“…Yazdanian et al (2012), for example, on FSLW of 3 mm thick AA 6060-T6 sheets, using conventional cylindrical pin tools, reported that hooking height may be decreased by increasing the tool traverse speed. Yazdanian and Chen (2009) reports the formation of hooking at the retreating side of the welds. Yadava et al (2010), performed FSLW on 1 mm thick AA 6111 aluminium alloy sheets using a stepped spiral pin with a relatively complex geometry.…”

Section: Introductionmentioning

confidence: 99%