Joining of non-weldable AA7075 and weldable AA6082 aluminium alloy sheets by Friction Stir Welding

Kovács, Zs.; Hareancz, Ferenc

doi:10.1088/1757-899x/448/1/012001

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…17 Therefore, it has generally poor welding characteristics. 18 In order to set the different tempers, a furnace Nabertherm N120/85 and a diode laser Laserline LDM3000-100 are used.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the joinability of the high-strength aluminum alloy AA7075 in shear-clinching processes

Wiesenmayer

Merklein

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Shear-clinching has proven to be a suitable technology for joining of high-strength materials. However, the mechanical properties of the upper joining partner are limited due to the high strains, which occur during the process. Therefore, shear-clinching of the high-strength aluminum alloy AA7075 in the T6 temper is not possible. Yet, the mechanical properties of hardenable alloys of the 7000 series can be influenced by a heat treatment. Thus, within the scope of this work, the joinability of the high-strength alloy AA7075 in shear-clinching processes in dependance of its temper is investigated. The as fabricated state F, the artificially aged T6 temper, a paint baked state and the naturally aged T4 temper are compared to the fully solution annealed W temper as well as to a retrogression heat-treated state. For retrogression heat treatment, a laser is used as heat source, heating up the alloy for a short term in order to only partially dissolve precipitations. The resulting mechanical properties are determined with uniaxial tensile tests. Moreover, the influence of the mechanical properties of AA7075 on the shear-clinching process, the joint formation and the resulting joint strength is analyzed.

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“…17 Therefore, it has generally poor welding characteristics. 18 In order to set the different tempers, a furnace Nabertherm N120/85 and a diode laser Laserline LDM3000-100 are used.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the joinability of the high-strength aluminum alloy AA7075 in shear-clinching processes

Wiesenmayer

Merklein

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The width of TMAZ resulted from the increased rotational speed on both aluminium alloy sides, which noticeably affected the material flow of the mixing pattern across welded joints [74]. On the other hand, the dissimilar joining of the brass plate (CuZn30) to 1050 Al-alloy gives better joints created owing to higher material flow and metallurgical bonding, significantly affecting heat input on recrystallisation at the welded stir zone [94].…”

Section: Microstructural Analysis Of Dissimilar Fswmentioning

confidence: 99%

Assessment of Friction Stir Welding: An Overview

Hasnol

Zaharuddin

Ali

et al. 2023

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Friction stir welding (FSW) has an advanced technique in solid-state conditions that joins from different materials compared to the fusion welding process and is eco-friendly. This ignificant advancement involves aluminium (Al) alloys which facilitate the FSW of distinguished flow patterns in the weld zone. Technically, heat energy and stirred material resulted in softening areas, affecting joint efficiency, mechanical properties, and metallurgical characterisation. This paper has concerns comprehensively covering and summarising the development and application of the topic in different aspects of the performance and quality of the FSW welded joint. The proper tools can create sufficient heat under the shoulder for excellent performance to deal with the welding parameter. All these tools have their literature and journal, which extensive discussion.Furthermore, alloy positioning, defect formation,rotational speed and transverse feed are essential analytical tools for FSW to control the significant weld quality. Furthermore, the mechanical properties associated with microstructural evolution highly dependent on welding technique have remarkably contributed to product development. Finally, a previous study has shown the interest in the topic to enhance the knowledge for further investigation with emerging technology for future recommendations in the FSW discipline.

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“…Friction stir welding (FSW) is a patented mechanical friction welding process [1] developed in the early 1990s for the welding of structural materials with poor weldability, such as aluminium components [2][3][4][5]. Its application to polymeric materials was first investigated in 2004 by Nelson et al [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Weld Forces and Strength of Friction Stir Welded Polypropylene

Stadler

Szebényi

Horváth

2023

Period. Polytech. Mech. Eng.

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Friction stir welding (FSW) is an advanced joining technology specifically developed for welding materials that are difficult to weld (e.g. polymers). Over the last two decades, more and more research has been published on the applicability and development of the technique on polymeric materials. The aim of the present study is to investigate the applicability of the method for welding polymeric materials and to analyse the effect of the parameters of FSW. In the tests, 4 mm thick polypropylene sheets were welded by varying two welding parameters (tool speed (n) and feed rate (vf)) in four levels. Thus, a complete experimental design with 16 measurement points was created. During the welding process, the force components on the tool/workpiece were measured, from which the resultant welding force was calculated and the strength of the joints was characterized by tensile testing. The ratio of the tensile strength of the joints and the tensile strength of the material were used to characterise the process in terms of joint efficiency. During welding, the axial force component (Fz) was the dominant force value. The resultant forces (Fe) decreased with increasing n, while they increased with increasing vf. The tensile strength of the joint, and hence the bonding efficiency, improved with increasing n, while it deteriorated with increasing vf. The ratio derived from the ratio of n to vf was also analysed, with an increase in the ratio showing a decreasing trend in the resulting weld strength and an improving trend in the bonding efficiency.

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Joining of non-weldable AA7075 and weldable AA6082 aluminium alloy sheets by Friction Stir Welding

Cited by 7 publications

References 4 publications

Investigation of the joinability of the high-strength aluminum alloy AA7075 in shear-clinching processes

Investigation of the joinability of the high-strength aluminum alloy AA7075 in shear-clinching processes

Assessment of Friction Stir Welding: An Overview

Investigation of Weld Forces and Strength of Friction Stir Welded Polypropylene

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