Joint features and mechanical properties of friction stir lap welded alclad 2024 aluminum alloy assisted by external stationary shoulder

Li, Zhengwei; Yue, Yumei; Ji, Shude; Chai, Peng; Zhou, Zunning

doi:10.1016/j.matdes.2015.10.056

Cited by 70 publications

(35 citation statements)

References 27 publications

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“…Cold laps almost present flat morphologies and extending into the SZ. These results are not in agreement with the results in our previous study [20], which can be attributed to the relatively big shoulder diameter in that study.…”

Section: Cross-section Of the Lap Jointcontrasting

confidence: 99%

“…Compared with our previous study [20], the inner rotating shoulder is dramatically reduced to thoroughly understand effects of the stationary shoulder on the lap joint formation and mechanical properties. Besides, influence of the tool rotating speed on cross-section, lap shear failure load and fracture mode of the SSFSLW joints were also studied.…”

Section: Introductionmentioning

confidence: 98%

“…In our previous study [20], we used an external assisted stationary shoulder system during FSLW of 2024 aluminum alloy. In that study, the external stationary shoulder is beneficial to form defect-free joints, which is difficult to obtain when using a traditional tool with a small shoulder diameter.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of rotating speed on joint morphology and lap shear properties of stationary shoulder friction stir lap welded 6061-T6 aluminum alloy

Zhou

Yue

et al. 2016

Int J Adv Manuf Technol

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In the present study, stationary shoulder technology was used to fabricate 6061-T6 friction stir lap welding (FSLW) joints. Effects of tool rotating speed on joint features and lap shear properties of the lap joints were mainly discussed. Similar to SSFSW, lap joint with smooth surface, without flash, shoulder marks and inner defects can be obtained using the stationary shoulder system. With increasing the rotating speed, effective sheet thickness (EST) firstly increases and then decreases. Effective lap width (ELW) gradually increases. The maximum EST and ELW are attained at 1200 and 1600 rpm, respectively. The maximum lap shear failure load of 17.01 kN is attained using rotating speed of 1400 rpm. The SSFSLW joints fracture in two modes: tensile fracture and shear fracture. All joints present ductile fracture mode.

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Section: Cross-section Of the Lap Jointcontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Effect of rotating speed on joint morphology and lap shear properties of stationary shoulder friction stir lap welded 6061-T6 aluminum alloy

Zhou

Yue

et al. 2016

Int J Adv Manuf Technol

Self Cite

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“…While increased the tool rotational speed results in increasing hooking region [15]. Zhengwei et al [16] analyzed the effect of external stationary shoulder on joint appearance and lap shear strength of FSLW alclad 2024 aluminum alloy. Stationary shoulder was found to be more beneficial to the joint formation and avoids arc corrugation, flash and voids.…”

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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Defects Morphology in the Dissimilar Friction Stir Welded T-lap Joints of AA7075 and AA5083

Hao

Okazaki

Tra

et al. 2018

Advances in Engineering Research and Application

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Joint features and mechanical properties of friction stir lap welded alclad 2024 aluminum alloy assisted by external stationary shoulder

Cited by 70 publications

References 27 publications

Effect of rotating speed on joint morphology and lap shear properties of stationary shoulder friction stir lap welded 6061-T6 aluminum alloy

Effect of rotating speed on joint morphology and lap shear properties of stationary shoulder friction stir lap welded 6061-T6 aluminum alloy

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

Defects Morphology in the Dissimilar Friction Stir Welded T-lap Joints of AA7075 and AA5083

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