The effect of material arrangement on mechanical properties in Friction Stir Welded dissimilar A5052/A5J32 aluminum alloys

Kim, Nam-Kyu; Kim, Byung-Chul; An, Yong-Gyu; Jung, Byung-Hoon; Song, Sung Heon; Kang, Chung Gil

doi:10.1007/s12540-009-0671-x

Cited by 30 publications

(22 citation statements)

References 4 publications

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“…Niu et al [71] investigated an AA2024-AA7075 joint and found that the top section of the SZ was composed of the BM of RS, whereas the middle and bottom sections by the BM of AS as shown in Figure 5. Kim et al [65] also showed that by placing the high strength Al alloy on the AS generates excessive agglomerations and defects due to limited material flow. In essence, the high strength Al should be placed at the RS to minimize the effect of the resistance to material flow.…”

Section: Positioning Of Alloymentioning

confidence: 99%

Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art

Patel

Wang

et al. 2019

Metals

103

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Friction stir welding (FSW) has enjoyed great success in joining aluminum alloys. As lightweight structures are designed in higher numbers, it is only natural that FSW is being explored to join dissimilar aluminum alloys. The use of different aluminum alloy combinations in applications offers the combined benefit of cost and performance in the same component. This review focuses on the application of FSW in dissimilar aluminum alloy combinations in order to disseminate research this topic. The review details published works on FSWed dissimilar aluminum alloys. The detailed summary of literature lists welding parameters for the different aluminum alloy combinations. Furthermore, auxiliary welding parameters such as positioning of the alloy, tool rotation speed, welding speed and tool geometry are discussed. Microstructural features together with joint mechanical properties, like hardness and tensile strength measurements, are presented. At the end, new directions for the joining of dissimilar aluminum alloy combinations should guide further research to extend as well as to improve the process, which is expected to raise further interest on the topic.

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Section: Positioning Of Alloymentioning

confidence: 99%

Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art

Patel

Wang

et al. 2019

Metals

103

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“…The ultimate tensile strength of the joints increases with the decrease of the heat input induced by friction. Kim et al [26] demonstrated that excessive agglomerations and defects generated by joints when the high strength Al alloy on the AS of AA5052/AA5J32 are placed due to limited flow of material. Lee et al [27] concluded that the mechanical properties of the stir zone showed higher values when AA6061 were positioned at the RS due to the complex microstructure of the stir zone.…”

Section: Introductionmentioning

confidence: 99%

Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Ahmed

Ataya

Seleman

et al. 2020

Metals

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The current work presents a detailed investigation for the effect of a wide range friction stir welding (FSW) parameters on the dissimilar joints’ quality of aluminum alloys. Two groups of dissimilar weldments have been produced between AA5083/AA5754 and A5083/AA7020 using tool rotational rates range from 300 to 600 rpm, and tool traverse speeds range from 20 to 80 mm/min. In addition, the effect of reversing the position of the high strength alloy at the advancing side and at retreating side has been investigated. The produced joints have been investigated using macro examination, hardness testing and tensile testing. The results showed that sound joints are obtained at the low heat input FSW parameters investigated while increasing the heat input results in tunnel defects. The hardness profile obtained in the dissimilar AA5083/AA5754 joints is the typical FSW hardness profile of these alloys in which the hardness reduced in the nugget zone due to the loss of the cold deformation strengthening. However, the profile of the dissimilar AA5083/AA7020 showed increase in the hardness in the nugget due to the intimate mixing the high strength alloy with the low strength alloy. The sound joints in both groups of the dissimilar joints showed very high joint strength with efficiency up to 97 and 98%. Having the high strength alloy at the advancing side gives high joint strength and efficiency. Furthermore, the sound joints showed ductile fracture mechanism with clear dimple features mainly and significant plastic deformation occurred before fracture. Moreover, the fracture in these joints occurred in the base materials. On the other, the joints with tunnel defect showed some features of brittle fracture due to the acceleration of the existing crack propagation upon tensile loading.

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“…Motivated by the increase in productivity and the successful FSW joint tests presented in the literature [ 29 , 30 , 31 ], the tests were carried out at a welding speed of 300 mm/min with various rotational speeds (400, 800, 1200 rpm). At the this welding speed, defects in the form of tunnel voids and wormholes appeared regardless of the rotational speed.…”

Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Dissimilar Friction Stir Welded Joint AA7020/AA5083 with Different Joining Parameters

et al. 2022

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The present paper aims to analyze the influence of process parameters (tool traverse speed and tool rotational speed) on the macrostructure, microhardness, and mechanical properties of dissimilar friction stir welded (FSW) butt joints. Nine combinations of FSW parameters welded joints of aluminum alloys 7020-T651 and 5083-H111 were characterized. Plates in 5 mm thickness were welded using the FSW method as dissimilar joints with three values of tool rotation parameters (400, 800, and 1200 rpm) and three welding speeds (100, 200, 300 mm/min). The macroscopic observations revealed various shapes of the stir zone and defects resulting from excess and insufficient heat input. Microfractographic analysis and tensile test results showed that the samples made with the FSW parameters of 800 rpm and 200 mm/min had the best strength properties: UTS = 303 MPa, YS = 157 MPa, and A = 11.6 %. Moreover, for all welds at welding speed 100 mm/min, the joint efficiency reached 95%.

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The effect of material arrangement on mechanical properties in Friction Stir Welded dissimilar A5052/A5J32 aluminum alloys

Cited by 30 publications

References 4 publications

Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art

Friction Stir Welding of Dissimilar Aluminum Alloy Combinations: State-of-the-Art

Heat Input and Mechanical Properties Investigation of Friction Stir Welded AA5083/AA5754 and AA5083/AA7020

Microstructure and Mechanical Properties of Dissimilar Friction Stir Welded Joint AA7020/AA5083 with Different Joining Parameters

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