Influences of Pin Shape on a High Rotation Speed Friction Stir Welding Joint of a 6061-T6 Aluminum Alloy Sheet

Zhou, Yang; Chen, Shujin; Wang, Jiayou; Wang, Penghao; Xia, Jingyu

doi:10.3390/met8120987

Cited by 17 publications

(13 citation statements)

References 19 publications

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“…Therefore, the mechanical properties of HAZ on the AS is poor. It can be seen from Figure 9 that the microhardness curve of the butt joint by the conventional tool shows 'W' type, which is similar to the microhardness distribution of other aluminum alloy µFSW joints [30,31]. The microhardness of the weld is lower than that of the base metal, and the lowest hardness zone appears in the bonding zone between TMAZ and HAZ.…”

Section: Macro Morphology and Microhardnesssupporting

confidence: 57%

A Study on Microstructure and Mechanical Properties of Micro Friction Stir Welded Ultra-Thin Al-1060 Sheets by the Shoulderless Tool

Zhang

Wang

Jin

et al. 2019

Metals

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The welding tool is the key of micro friction stir welding (μFSW), which affects the heat input and the plastic forming of weld metal. In this paper, 0.8-mm-thick ultra-thin 1060-H24 aluminum sheets μFSW butt joints were used to compare and analyze the influence of the conventional tool and shoulderless tool on weld shaping, microstructure and mechanical properties. Besides, by measuring the axial force, transverse force and weld temperature in μFSW process, the influence of these two different tools on the heat input and metal flow mechanism of the weld were analyzed. The results show that the weld generated by the shoulderless tool has narrower width, less heat input and metal involved in plastic forming resulting in smaller HAZ (heat affected zone). The hardness of NZ (nugget zone) is obviously increased compared with that of the base metal. The highest tensile strength can reach 108.6 MPa, accounting for 78.6% of the base metal and 117.3% of the joint by the conventional tool. But the welding defects have to be overcome for industrial application of the shoulderless tool.

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Section: Macro Morphology and Microhardnesssupporting

confidence: 57%

A Study on Microstructure and Mechanical Properties of Micro Friction Stir Welded Ultra-Thin Al-1060 Sheets by the Shoulderless Tool

Zhang

Wang

Jin

et al. 2019

Metals

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“…The geometry of the shoulder and the pin profile govern heat generation and material flow during welding [81]. The shoulder contributes to a large extent to heat input due to its size.…”

Section: Tool Geometrymentioning

confidence: 99%

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

Patel

Wang

et al. 2019

Metals

112

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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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“…The geometry of the shoulder and the pin profile govern heat generation and material flow during welding [84][85][86][87][88][89][90][91][92][93][94][95][96][97][98][99]. The shoulder contributes to a large extent to heat input due to its size.…”

Section: Effect Of Stirring Tool Geometrymentioning

confidence: 99%

Advances in FSW and FSSW of dissimilar Al-alloy plates

Çam

Javaheri

Heidarzadeh

2022

Journal of Adhesion Science and Technology

125

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Numerous industrial applications, particularly those in the transport industry, require the joining of dissimilar materials which offers considerable benefits in terms of low cost, design flexibility, and weight reduction for overall structures. The problems associated with conventional fusion welding processes have stimulated researchers in recent years to develop new joining methods for dissimilar materials which are particularly difficult to join. Friction stir welding (FSW) originally developed for joining difficult-to-weld Al-alloys and FSSW (a variant of FSW for spot welding) have exhibited great potential for obtaining sound joints in various dissimilar alloy systems in different configurations namely butt-, lap-and spot-welding, particularly in dissimilar Al-alloys systems with different properties, which are very difficult to weld using conventional fusion welding techniques. A major difficulty in joining dissimilar Alalloys by FSW/FSSW lies in the discontinuity in mechanical and technological properties (such as high temperature strength, plastic deformation capacity, viscosity, etc.) of the materials to be welded across the abutting surfaces. This discontinuity as well as inherent asymmetry in heat generation and material flow of FWS/FSSW processes causes a higher asymmetry in materials flow behavior in dissimilar welding. However, it is relatively easier to implement the FSW/FSSW process to dissimilar Al-alloys in contrast to FSW of dissimilar materials combinations with very differing properties, such as Al-alloy to Mg-alloy or Al-alloy to steel.

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Influences of Pin Shape on a High Rotation Speed Friction Stir Welding Joint of a 6061-T6 Aluminum Alloy Sheet

Cited by 17 publications

References 19 publications

A Study on Microstructure and Mechanical Properties of Micro Friction Stir Welded Ultra-Thin Al-1060 Sheets by the Shoulderless Tool

A Study on Microstructure and Mechanical Properties of Micro Friction Stir Welded Ultra-Thin Al-1060 Sheets by the Shoulderless Tool

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

Advances in FSW and FSSW of dissimilar Al-alloy plates

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