Mechanical and metallurgical characterization of friction stir welding joints of AA6061-T6 with AA6082-T6

Moreira, P.M.G.P.; Santos, Telmo G.; Tavares, S.M.O.; Richter-Trummer, Valentin; Vilaça, Pedro; Castro, P.M.S.T. de

doi:10.1016/j.matdes.2008.04.042

Cited by 204 publications

(94 citation statements)

References 10 publications

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“…This weld pitch value is in agreement with the threshold of 0.53 mm/rev determined by Liu et al (1997) for FSW of 5 mm thick AA6061-T6; above 0.53 mm/rev the degradation in weld integrity compromised the mechanical properties of the welded joint. In the present case of 3.18 mm thick AA6061-T6, using a weld pitch value of 0.48 mm/ rev, a relatively high joint efficiency (76%) was reported previously by the present authors (Wanjara et al, 2013); in comparison, a lower weld pitch value of 0.2 mm/rev rendered a lower joint efficiency (64%) for FSW of 3 mm thick AA6061-T6 (Moreira et al, 2009). It is noteworthy that joint efficiency refers to the ratio between ultimate tensile strength of the welded joint to that of the BM.…”

Section: Fsw Process Window Investigation For Butt-weld Configurationsupporting

confidence: 80%

Process operational windows and industrialization scenarios for assembly of large aluminium structures by robotic friction stir welding

Wanjara¹,

Monsarrat²,

Larose³

2015

Can. Aeronaut. Space J.

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Abstract. In this work, friction stir welding (FSW) of 3.18 mm thick AA6061-T6 sheets in the butt-and lap-joint configuration was investigated with the objective of industrializing the process using low-cost serial industrial robots. The influence of weld pitch on the welding defects, microstructure, hardness, and bend performance of butt and lap welds was examined to identify process operational windows for both joint types. In parallel with these trials, a methodology based on kinetostatic analysis was developed to identify and evaluate viable robotized scenarios for FSW. On the basis of the experimental FSW process development results, this methodology was then applied to identify optimized FSW scenarios for the fabrication of large integrated AA6061 structural components with stringer-to-skin and skin-to-skin joints. Candidate workcell layouts are also presented.Résumé. Dans ce travail, le soudage par friction malaxage (mieux connu sous l'acronyme FSW pour Friction Stir Welding) de feuilles d'aluminium 6061-T6 d'une épaisseur de 3.18 mm dans les configurations bout-à-bout et par recouvrement a été étudié dans l'optique d'industrialiser le procédé via l'utilisation de robots sériels industriels à bas coû t. L'influence du pas de soudage (weld pitch) sur les défauts de soudage, la microstructure, la dureté et la performance en flexion a été examinée afin d'établir les fenêtres opératoires du procédé pour les deux types de soudure. En parallèle de ces essais expérimentaux, une méthodologie basée sur l'analyse cinétostatique a été développée afin d'identifier et d'évaluer des scénarios viables d'implantation du soudage par friction malaxage robotisé. Cette méthodologie a par la suite été appliquée en utilisant les résultats des tests expérimentaux de soudage afin d'identifier des scénarios d'implantation optimisés pour l'assemblage de composants structurels intégrés de grande dimension en AA60601 comprenant à la fois des joints lisse sur revêtement et revêtement sur revêtement. Des scénarios d'implantation potentiels ont été identifiés et sont présentés.

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Section: Fsw Process Window Investigation For Butt-weld Configurationsupporting

confidence: 80%

Process operational windows and industrialization scenarios for assembly of large aluminium structures by robotic friction stir welding

Wanjara¹,

Monsarrat²,

Larose³

2015

Can. Aeronaut. Space J.

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“…This fine microstructure produces good mechanical properties in friction stir welds (Moreira et al, 2009). Better quality joints are associated with more intense tridimensional material flow pattern.…”

Section: Typical Metallurgical Featuresmentioning

confidence: 99%

Non-Destructive Testing Techniques for Detecting Imperfections in Friction Stir Welds of Aluminium Alloys

Vilaça¹,

Santos²

2011

Aluminium Alloys, Theory and Applications

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“…Heat treatment changes the microstructure and mechanical properties of material and it also contributes to important effects on evolution of re-crystallization and deformation textures. The alloys AA6082-T6 is high strength Al-Mg-Si alloys that contain manganese to increase ductility and toughness [2]. Cuniberti et al [3] have reported that, artificial aging of Al-Mg-Si alloy for 30 min at 180 °C after solution treatment resulted in a significant increase in yield strength and loss of ductility, due to the rapid precipitation of the β′′ intermediate phase [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Proportion of Duplex Fiber Texture of Aluminium Magnesium Silicon Alloy

Chopkar¹

2017

MSEIJ

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In the present study, an attempt has been made to understand the texture evolution of Aluminium alloy 6082-T6 after different aging heat treatment process. Effects of heat treatment in controlling the variation and domination of one fiber texture over the other in a duplex fiber texture have been observed. Texture studies were carried out with ND direction parallel to direction of extrusion. Solutionised and aged samples have shown the variations in volume fraction of <100> and <111> fibre due to effect of re-crystallization and precipitation. The presence of clusters of solutes and β′′ precipitates alters the proportion of volume fraction of <100> and <111> duplex fibers. Peak aged samples showed significant strengthening of <100> fiber as compared to solutionised and aged samples.

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Mechanical and metallurgical characterization of friction stir welding joints of AA6061-T6 with AA6082-T6

Cited by 204 publications

References 10 publications

Process operational windows and industrialization scenarios for assembly of large aluminium structures by robotic friction stir welding

Process operational windows and industrialization scenarios for assembly of large aluminium structures by robotic friction stir welding

Non-Destructive Testing Techniques for Detecting Imperfections in Friction Stir Welds of Aluminium Alloys

Effect of Heat Treatment on Proportion of Duplex Fiber Texture of Aluminium Magnesium Silicon Alloy

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