Dissimilar friction stir welds in AA5083-AA6082. Part I: Process parameter effects on thermal history and weld properties

Peel, Matthew; Steuwer, A.; Withers, Philip J.; Dickerson, Terry; Shi, Qingyu; Shercliff, Hugh

doi:10.1007/bf02586138

Cited by 154 publications

(113 citation statements)

References 22 publications

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“…Peel et al [29] studied the evolution of temperature and material mixing during friction stir welding of similar and dissimilar AA5083-AA6082 aluminium alloys. The authors found different plastic flow during similar and dissimilar welding, which naturally explains different mechanical properties for those welds when joined under the same conditions, as observed in present study.…”

Section: Hardness Test Resultsmentioning

confidence: 99%

“…Due to its remarkably different welding behaviour and its potential industrial interest, the joining of AA5xxx and AA6xxx alloys in dissimilar TWBs, with 2 and 3 mm plates, was already investigated by several authors [10,25,26,28,29]. Giera et al [12] performed a statistical investigation on FSW of the AA5182 and AA6016 alloys in similar TWBs.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds

et al. 2009

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a b s t r a c tThe tensile behaviour of similar and dissimilar friction stir welds in 1 mm thick sheets of two aluminium alloys (AA5182-H111 and AA6016-T4) is analysed in this paper. The heterogeneity in properties across the welds was studied by performing microhardness tests and microstructural analysis. The tensile tests were performed in samples extracted longitudinal and transverse to the weld direction. It was found that the tensile behaviour of the welds depends mainly on the grain size in the TMAZ, for the AA5182-H111 alloy, and on precipitate distribution, for the AA6016-T4 alloy. In all types of welds, the HAZ preserves the same properties of the base materials. The global mechanical behaviour of the AA5182-H111 similar welds is very similar to that of the base material. However, for the AA6016-T4 similar welds and for the AA6016-T4-AA5182-H111 dissimilar welds a 10-20% strength reduction relative to the base materials and important losses in ductility were reported.

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Section: Hardness Test Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds

et al. 2009

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“…22 The shoulder of FSW tools influences a number of weld features: from the most basic ones such as the weld appearance and roughness, to microstructural characteristics influencing the weld strength. [23][24][25] These features are obtained through the forging action aimed at a proper containment and consolidation of the base material. 25 A number of shoulder designs emerged.…”

Section: Introductionmentioning

confidence: 99%

“…[23][24][25] These features are obtained through the forging action aimed at a proper containment and consolidation of the base material. 25 A number of shoulder designs emerged. The most basic shoulder type is straight in the profile, without any curvature.…”

Section: Introductionmentioning

confidence: 99%

FSW welding of Al-Mg alloy plates with increased edge roughness using square pin tools of various shoulder geometries

Baloš¹,

Šidjanin²,

Dramićanin³

et al. 2016

Mater. Tehnol.

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In the paper, the influence of tool shoulder geometries on the mechanical properties and weld surface roughness of an Al-Mg alloy was studied. Different types of tools were used: with straight and concave profiles. Three concave-shoulder types were applied, with volume ratios of 0.5 and 0.9 of the square pin to the shoulder reservoir and one with three concentric semi-toroidal reservoirs with a volume ratio of 0.5 of the pin to the shoulder reservoir. The tensile and bend properties, hardness profiles and macro-features of welds were examined. It was found that the optimum tensile and bending properties were obtained when applying the tool with concentric reservoirs and the lowest welding speed. In this way, the widest nugget zone at the plate axis is obtained, as well as the thickest nugget-zone layer under the specimen surface, covering the thermomechanical and heat-affected zones. The overlapping of the nugget zone with the thermomechanical and heat-affected zones enables higher proof and ultimate tensile strengths compared to the base material. The surface-roughness parameters of the weld face are lower for the specimens welded with the tools with reservoirs and considerably lower than the base-material edge-surface roughness. Keywords: friction-stir welding, 5052 aluminum alloy, FSW parameters, joint properties, surface roughness V~lanku je prikazana raziskava vpliva geometrije boka orodja na mehanske lastnosti in hrapavost povr{ine zvara Al-Mg zlitine. Uporabljeni sta bili orodji z ravnim in konkavnim profilom. Uporabljene so bile tri vrste konkavnih bokov, z razmerjem volumna 0,5 in 0,9 bo~nega rezervoarja ter kvadratne konice in eden s tremi poltoroidnimi koncentri~nimi rezervoarji, z razmerjem volumnov 0,5 konica-bok. Preiskovane so bile natezne in upogibne lastnosti, profili trdote in makro izgled zvarov. Ugotovljeno je, da so bile optimalne natezne in upogibne lastnosti dobljene pri uporabi orodja s koncentri~nimi rezervoarji pri najmanj{i hitrosti varjenja. Na ta na~in se dose`e naj{ir{e podro~je me{anja pod povr{ino vzorca, ki pokriva termomehansko in toplotno vplivano podro~je. Prekrivanje podro~ja me{anja s termomehanskim in toplotno vplivanim podro~jem, omogo~a vi{jo mejo plasti~nosti in vi{jo natezno trdnost, v primerjavi z osnovnim materialom. Parametri povr{inske hrapavosti~ela zvara so manj{i pri vzorcih zvarjenih z orodji z rezervoarji in so ob~utno ni`ji, kot je osnovna hrapavost roba materiala. Klju~ne besede: torno vrtilno varjenje, aluminijeva zlitina 5052, parametri FSW, lastnosti spoja, hrapavost povr{ine

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“…Friction stir welding (FSW) patented by W. Thomas and his colleagues of The Welding Institute (TWI), UK, in 1991 is an innovative joining process which can weld dissimilar alloys traditionally considered unweldable [1][2][3] . When joining dissimilar materials, especially aluminum alloy to steel, the residual stresses produced are expected to be severe due to the frictional work and plastic deformation during FSW.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Residual Stress on Dissimilar Butt Joint by TIG Assisted Hybrid Friction Stir Welding

Ro¹,

Bijoy²,

Bang³

et al. 2012

Journal of the Korean Welding and Joining Society

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This paper aimed to study and understand the mechanical phenomena of thermal elasto-plastic behavior on the dissimilar butt joint (Al 6061-T6 and STS304) by TIG assisted Friction Stir Welding. Heat conduction and residual stress analysis is carried out using in-house solver. Two-dimensional results of the heat distribution and residual stresses in dissimilar joint for particular tool geometry and material properties are presented. The predicted stress along longitudinal direction in Al 6061-T6 and STS304 are approximately between 12-15% of their respective yield strengths. A comparison is made between experimentally measured and numerically predicted equivalent residual stress values.

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Dissimilar friction stir welds in AA5083-AA6082. Part I: Process parameter effects on thermal history and weld properties

Cited by 154 publications

References 22 publications

Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds

Mechanical behaviour of similar and dissimilar AA5182-H111 and AA6016-T4 thin friction stir welds

FSW welding of Al-Mg alloy plates with increased edge roughness using square pin tools of various shoulder geometries

Analysis of Residual Stress on Dissimilar Butt Joint by TIG Assisted Hybrid Friction Stir Welding

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