Friction Hydro-Pillar Processing of a High Carbon Steel: Joint Structure and Properties

Kanan, Luis Fernando; Vicharapu, Buchibabu; Bueno, Antonio Fernando Burkert; Clarke, Thomas Gabriel Rosauro; De, A.

doi:10.1007/s11663-018-1171-5

Cited by 9 publications

(23 citation statements)

References 17 publications

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“…where η h is the fractional heat transferred to stud, r is the radial distance of a point from the stud axis, and µ, ω, P and τ y refer to the co-efficient of friction, angular speed of stud, axial pressure on the stud and shear yield stress of stud material, respectively. The values of η h and µ were considered as 0.5 and 0.3, respectively [5,6]. A lumped expression is used to estimate the convective heat loss from the surfaces as [21,22]…”

Section: Numerical Modellingmentioning

confidence: 99%

“…The straight cylindrical-shaped studs also showed inadequate mixing and lack of coalescence with the substrate [1]. Subsequent use of tapered cylindrical studs improved the filling of crack volumes and consolidation processes in FHPP of C-Mn steel, AISI 4140 and duplex stainless steels (UNS S31803) [5][6][7][8]. The taper cylindrical studs also enhanced the rate of frictional heat generation [5,9].…”

Section: Introductionmentioning

confidence: 99%

“…Material properties of AISI 4140[6]. W mK -1 ) 54.91-3.33e −2 × T + 1.0e −5 × T 2 for T < 1200 K30.0 for T ≥ 1200 K Specific heat (J kgK-1 ) 361.55 + 1.13e −1 × T + 3.0e −4 × T 2 300 K ≤ T ≤ 1200 K607.0 for T > 1200 K…”

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confidence: 99%

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Material flow during friction hydro-pillar processing

Landell

Kanan

Buzzatti

et al. 2019

Science and Technology of Welding and Joining

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Friction hydro-pillar processing (FHPP) is a novel technique that involves solid-state joining of an external plug onto a substrate by plastic deformation. A systematic investigation on material flow during FHPP is required but rarely reported. The present work reports a coupled theoretical and a three-dimensional X-ray computer tomography-based experimental study using a Ti-alloy as a tracer material to realise the material flow during FHPP of a AISI 4140 steel substrate. The cumulative results showed that the central portion of the plug deformed in a series of layerwise shear planes. However, the plasticised material towards the outer area of the plug flowed through the clearance between the plug and the substrate with excess volume moving out as flash.

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Section: Numerical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Material flow during friction hydro-pillar processing

Landell

Kanan

Buzzatti

et al. 2019

Science and Technology of Welding and Joining

Self Cite

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“…where h b = 10.0 W m −2 K −1 . The peak temperature during solid state joining remains below the solidus temperature of the respective workpiece material [15][16][17][18][19][20][21][22][23][24]. Similar boundary conditions are used in numerical heat transfer modeling of FSW and stationary shoulder friction stir welding (SSFSW) processes [23,24].…”

Section: Theoretical Formulationmentioning

confidence: 99%

“…D'Alvise et al [17] computed the flash foramtion in inertial friction welding using a finite element method based process simulation model. Landell et al [18] and Kanan et al [19] developed process simulation models to explain the material flow and defect formation in FHPP of steels. Similar process models are yet scarce in open literature for GFW and RFW processes.…”

Section: Introductionmentioning

confidence: 99%

An investigation on girth friction welding of duplex stainless steel pipes

Kanan

Vicharapu

Pissanti

et al. 2020

Journal of Manufacturing Processes

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Girth friction welding is a novel technique to join co-axial linepipes with an external ring (girth) in solid state and without melting of materials. The ring or the girth is rotated between two pipes under an axial force resulting in frictional heat generation and plastic deformation along the pipe-girth interfaces. The rotation of the girth is stopped after a preset displacement of the pipes while the force is maintained to consolidate the deformed material and form the joint along the girth-pipe interfaces. Since the girth is only rotated and the pipeline sections remain stationary, the process simplifies the in situ assembly operations and enables the joining of complex configurations. As the melting of pipes and girth is avoided, the formation of harmful intermetallic compounds and deterioration of toughness in the heat affected zone are minimized. A comprehensive numerical model is reported in the present work to analyse the influence of key process variables on the rate of heat generation, resulting temperature field and thermal cycles, and the nature of material flow along the pipe-girth interfaces in girth friction welding of duplex stainless steel pipes. The computed results of thermal cycles and joint shapes are validated with the corresponding experimentally measured results. The results showed a favorable balance of the ferrite and austenite phases, and very little presence of the harmful sigma phases in the recrystallized weld-zone, which is difficult in fusion welding processes of similar materials.

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