Friction stir welding of small-dimension Al3003 and pure Cu pipes

Chen, Binxi; Chen, Ke; Hao, Wei; Liang, Z.Y.; Yao, Junshan; Zhang, Lanting; Shan, Aidang

doi:10.1016/j.jmatprotec.2015.03.044

Cited by 44 publications

(20 citation statements)

References 14 publications

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“…Both of these cases deal with substantially larger diameters than the 38 mm tube used in the present work and this smaller size was chosen to be representative of the dimensions that might be used in space frame chassis design for ground vehicles. Chen et al [13] have also published work on the development of a FSW process for joining 19 mm diameter pipes of 3003 aluminium alloy to pure copper with a 1 mm wall thickness. They made the welds on an adapted lathe and performed tensile tests but did not consider fatigue data.…”

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confidence: 99%

Crack path and fracture analysis in FSW of small diameter 6082-T6 aluminium tubes under tension–torsion loading

Maggiolini

Tovo

Susmel

et al. 2016

International Journal of Fatigue

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Article:Maggiolini, E., Tovo, R., Susmel, L. et al. ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 AbstractThis paper reports part of the work done in a research project aimed at developing an optimised process to join 38 mm diameter tubes of 6082-T6 aluminium alloy using friction stir welding (FSW), and then to determine the fatigue performance under tension, torsion and tensiontorsion loading conditions. The final outcome of the project is intended to be guidance for fatigue design of small diameter aluminium tubes joined by FSW, and this paper presents information on crack path and defects under the various loading conditions. Crack path analysis was performed using both low magnification stereo microscopy and scanning electron microscopy, in order to identify crack initiation sites, the direction of crack propagation and the interrelated influence of microstructure and weld geometry on the crack initiation path. KeywordsFriction stir welding; multiaxial fatigue; tension-torsion; 6082-T6 aluminium; small diameter tube; crack path. IntroductionWelding is the most common joining process in structural design and general manufacturing, and is statistically reliable provided that joint design adheres to codified guidelines.Nonetheless, cracking problems are often observed to be associated with the weld zone, arising from microstructural changes due to the weld thermal cycle, residual stresses induced by differential heating and cooling, and defects introduced in the weld zone either by local geometry changes (stress concentration points) or from the welding process (particularly in fusion welding, which is a casting process). Hence a major challenge faced in fatigue design is Whilst it is easy to join flat plate with FSW, it can be difficult to extend its applications to include tubes, in particular small diameter tubes, and other complex geometries. Friction stir welding of tubes has particular challenges in terms of pin plunge depth and support for the material during welding and also in terms of ...

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mentioning

confidence: 99%

Crack path and fracture analysis in FSW of small diameter 6082-T6 aluminium tubes under tension–torsion loading

Maggiolini

Tovo

Susmel

et al. 2016

International Journal of Fatigue

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“…140• revolution. Peripheral varieties in weld upper surface feasible possibilities, full scale/scaled down structure and mechanical properties ares similarly watched and seen that it is related to the welding temperature variety (low and high) [12]. Mao Yuqing et al examined impact of eccentricity tool pin for mechanical and micro-structure properties in grating friction stirT weldedT procedureT ofT AA7075T andT discoveredT thatT nuggetT regionT incrementsT andT theT mostT extremeT areaT isT alsoT achievedT withT aT pinT eccentricityT ofT 0.2T mmT [13].T MontalbaT RezaeeT HajidehaT etT al.T exploredT theT apparatusT geometryT andT itsT impactT onT mechanicalT andT microstructureT propertiesT ofT dissimilarT plasticT byT FSWT process.T ResearchersT observedT thatT threadedT cylindricalT pinT profileT hasT theT bestT executionT forT eachT weldingT procedureT conditionT andT furthermoreT giveT progressivelyT laminarT andT theT uniformT materialT flowT regimeT duringT weldingT inT contrastT withT otherT toolT pinT shape'sT [14].T M.T PicciniT etT al.T improvedT device geometry of Al-steel joints in friction stir spot welding and the creator revealed that crack loads expanded when the tool insert depth penetrate high then tool geometry augmentation expanded the fracture loads [15].…”

Section: Process Variablesmentioning

confidence: 99%

An Experimental Analysis on Operating Parameter’s Influence on Friction Stir Welding/processing

Panwar¹,

Chandna²

2019

IJEAT

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This paper clarifies the basic standard and procedure of FSW. It consists all the specialized characteristic which influences the procedure and excellence of FSW joint. Effect on every form of joint setup is taken into consideration. All the methodological parts of FSW tool geometry and material of tool is taken. In this article influence of essential parameters like tool rpm, tool feed, tool tilt angle, downward command and tool depression time on joining quality has been calculated. Finally, the fields on which further more exploration can be carried out has been identified.

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“…This is because pipe joining via FSW is still facing difficulties such as the design of a unique mechanism and tooling system. For the successful joining of pure Cu and Al3003 pipes with a 19-mm outer diameter, Chen et al [ 18 ] designed a special FSW system applicable to air-conditioning and heating systems. Welding temperature changes along the weld seam substantially affected the mechanical and macro- and microstructural behavior of the joints.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Microstructural Properties of HDPE Pipes Manufactured via Orbital Friction Stir Welding

et al. 2022

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In recent decades, extensive research has been performed on the friction stir welding of flat-shaped materials while pipe welding, particularly polymer pipes, still encounters challenging issues. This work presents a feasible route for joining high-density polyethylene (HDPE) pipes using an orbital friction stir welding (OFSW) set-up properly designed with a retractable pin tool. Fully consolidated joints were achieved using a portable heating-assisted OFSW system suited for on-site pipeline welding. The obtained joined pipes were characterized by a high-quality weld surface and a lack of defects arising from the tool-pin hole. The samples welded with the optimum parameters presented comparable properties with the base materials and even a slight increase in the tensile strength. The highest tensile and impact strengths were 14.4 MPa and 2.45 kJ/m2, respectively, which is 105% and 89% of those of the base material. XRD, FTIR, and SEM were also applied to assess the property changes in the HDPE pipes after the FSW process. The morphological analysis evidenced that the crystalline structure of the welded sample was similar to that of the base material, proving the effectiveness of the proposed technology.

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Friction stir welding of small-dimension Al3003 and pure Cu pipes

Cited by 44 publications

References 14 publications

Crack path and fracture analysis in FSW of small diameter 6082-T6 aluminium tubes under tension–torsion loading

Crack path and fracture analysis in FSW of small diameter 6082-T6 aluminium tubes under tension–torsion loading

An Experimental Analysis on Operating Parameter’s Influence on Friction Stir Welding/processing

Mechanical and Microstructural Properties of HDPE Pipes Manufactured via Orbital Friction Stir Welding

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