Material flow visualization and determination of strain rate during friction stir welding

Kumar, Rahul; Pancholi, V.; Bharti, Ram P.

doi:10.1016/j.jmatprotec.2017.12.034

Cited by 58 publications

(23 citation statements)

References 24 publications

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“…All these observations testify the huge deformation encountered by the material during the welding. Kumar et al (2018) used particle image velocimetry (PIV) technique, to study the material flow and measure the strain rate around the tool (Fig. 7).…”

Section: Ii1 Materials Flowmentioning

confidence: 99%

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A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

Jacquin

Guillemot

2021

Journal of Materials Processing Technology

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Friction stir welding (FSW) process is currently considered as a promising alternative to join aluminium alloys. Indeed, this solid-state welding technique is particularly recommended for the assembly of these materials. Since parts are not heated above their melting temperature, FSW process may prevent solidification defects encountered in joining aluminium alloys and known as limitations to the dissemination of these materials in industries. During the past years, large literature has been devoted to the modelling of microstructural evolution in aluminium alloys during FSW processes and mainly dedicated to the analysis of precipitate evolutions and grain recrystallization mechanisms. Precipitate size distribution models have aroused widespread interest in recent years demonstrating their relevance to follow precipitation process in multicomponent alloys and multiphase systems. Efficient recrystallization models are also available and based on various grain growth mechanisms. In addition, multi-scale coupling strategies have recently emerged considering thermal, mechanical and metallurgical solutions. Consequently, the effect of FSW process parameters on weld properties is now investigated to determine optimized welding strategies regarding microstructure evolution. This research is based on reliable models reported in the literature enhancing the estimation of final weld state and associated properties as an answer to industrial needs. Validations of proposed modelling strategies have been reported based on in-depth analyses of experimental observations. This present work proposes a review of recent models dedicated to microstructural evolutions in aluminium alloys during FSW process. The interest and efficiency of current approaches will be discussed to highlight their limitations. Guidelines will propose new routes toward enhanced modelling strategies for future developments.

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Section: Ii1 Materials Flowmentioning

confidence: 99%

“…7: Flow measurement using particle image velocimetry (PIV) system and images of the tracer particles for time ' ' and ' t' showing their displacements. (Kumar et al, 2018).…”

Section: Figurementioning

confidence: 99%

A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

Jacquin

Guillemot

2021

Journal of Materials Processing Technology

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“…in the Advanced Photon Source [66]. Another complementary strategy is to employ transparent feed material containing opaque particles [67]. Using high-speed optical imaging and digital image (or volume) correlation, the particle velocity field can be in situ measured to infer the strain rate of the matrix material.…”

Section: Towards An In-depth Understanding Of the Physics Underlying mentioning

confidence: 99%

Additive friction stir deposition: a deformation processing route to metal additive manufacturing

Mishra

2020

Materials Research Letters

132

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As the forging counterpart of fusion-based additive processes, additive friction stir deposition offers a solid-state deformation processing route to metal additive manufacturing, in which every voxel of the feed material undergoes severe plastic deformation at elevated temperatures. In this perspective article, we outline its key advantages, e.g. rendering fully-dense material in the as-printed state with fine, equiaxed microstructures, identify its niche engineering uses, and point out future research needs in process physics and materials innovation. We argue that additive friction stir deposition will evolve into a major additive manufacturing solution for industries that require high load-bearing capacity with minimal post-processing. IMPACT STATEMENT This paper delineates additive friction stir deposition, which offers a solid-state deformation processing route to metal additive manufacturing and renders fully-dense material with fine, equiaxed microstructures in the as-printed state.

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“…Recently, studies have been done to develop experimental methods to evaluate the strain and strain rate during FSW. Kumar et al (2018) used an experimental simulation method to approximate the strain rate during FSW. Micro-spherical glass tracers in a transparent viscoplastic material together with particle image velocimetry technique were used.…”

Section: Introductionmentioning

confidence: 99%

Strain Accumulation and Microstructural Evolution During Friction Stir Welding of Pure Magnesium

Hua

Chen

et al. 2020

Front. Mater.

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Material flow visualization and determination of strain rate during friction stir welding

Cited by 58 publications

References 24 publications

A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

A review of microstructural changes occurring during FSW in aluminium alloys and their modelling

Additive friction stir deposition: a deformation processing route to metal additive manufacturing

Strain Accumulation and Microstructural Evolution During Friction Stir Welding of Pure Magnesium

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