Experimental and finite element analyses of plastic deformation behavior in vortex extrusion

Shahbaz, M.; Pardis, N.; Kim, J.G.; Ebrahimi, R.; Kim, H.S.

doi:10.1016/j.msea.2016.07.044

Cited by 15 publications

(7 citation statements)

References 19 publications

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“…Single pass SPD techniques, however, are capable of introducing relatively large plastic strains by combining different modes of deformation that can result in smaller grains with a high fraction of HAGBs compared to those of the conventional forming operations (like extrusion or rolling). The single pass methods, which can be found in Tables 2-7, are : nonequal channel angular pressing /channel angular deformation (CAD) [116,117], double change channel angular pressing [118], ECAP forward extrusion (ECAP-FE) [231], forward extrusion ECAP (FE-ECAP) [232], incremental angular splitting [119], torsion extrusion [240,241], vortex Extrusion (VE) [188,189], variable cross-section direct extrusion (CVCDE) [190,191], gradiation extrusion [192,193], integrated extrusion [194], compound extrusion [195], compound twist extrusion/C-TE (TE+Ext.) [243], alternate extrusion (AE) [196], large strain machining [120] and large strain extrusion machining (LSEM) [245].…”

Section: -mentioning

confidence: 99%

“…[140] Axi-symmetric forward spiral extrusion (AFSE) [141] High-speed high pressure torsion (HS-HPT) [142] Severe torsion straining (STS) [143] Friction stir processing (FSP) [144,145] [148] Off-axis twist extrusion [186] Tube cyclic extrusioncompression (TCEC) [187] Vortex extrusion (VE) [188,189] Variable cross-section direct extrusion (CVCDE) [190,191] Gradiation extrusion [192,193] Integrated extrusion [194] Compound extrusion [195] Alternate extrusion (AE) [196] Spin extrusion [197] Rotary extrusion (RT) [198] Plastic flow machining (PFM) [199] Compound twist extrusion/C-TE (TE+Ext. )…”

Section: Summery and Conclusionmentioning

confidence: 99%

See 1 more Smart Citation

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Bagherpour

Pardis

Reihanian

et al. 2018

Int J Adv Manuf Technol

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114

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The present overview gives a new approach toward developments and recent achievements in severe plastic deformation. The review focuses on several subjects. First, an outline of SPD research status in the world is presented by literature analysis based on the total number of publications, citations and the contribution of the topranked countries. Second, the mechanisms of grain refinement and grain growth during SPD processing are discussed by means of the latest concepts. Third, all SPD methods invented so far are classified based on a new approach. Up to now, the growing tendency of researchers to introduce new SPD techniques results in a large number of SPD methods which can be considered as new or modified techniques or a combination of previous ones. Such a reference can help to prevent the future duplication to introduce the SPD processes, which are technically similar. At the end, the practical applications of ultrafine/nanostructured materials and industrial commercialization of SPD methods are summarized.

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Section: -mentioning

confidence: 99%

Section: Summery and Conclusionmentioning

confidence: 99%

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Bagherpour

Pardis

Reihanian

et al. 2018

Int J Adv Manuf Technol

Self Cite

114

View full text Add to dashboard Cite

show abstract

“…Before that, however, it is needed to determine the dominant deformation mode. In this regard, the kinematically admissible velocity field proposition for a given deformation process can make it much easier for considering simple shear/pure shear deformation modes in some techniques like Axi-symmetric forward spiral extrusion (Khoddam, Farhoumand, & Hodgson, 2011) and Vortex Extrusion (Shahbaz, Pardis, Ebrahimi, & Talebanpour, 2011;Shahbaz, Pardis, Kim, Ebrahimi, & Kim, 2016) where such classification might not be easily possible.…”

Section: Introductionmentioning

confidence: 99%

Equivalent strain at large shear deformation: Theoretical, numerical and finite element analysis

Pardis¹,

Ebrahimi²,

Kim³

2017

Journal of Applied Research and Technology

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In this study, effective strain is evaluated for large simple/pure shear deformations and new expressions are derived. The validity of these relations was checked by numerical calculations. In addition, finite element analysis of simple shear and pure shear modes of deformation was conducted using ABAQUS software. Additionally, two other major expressions for evaluating effective strain at large simple shear deformation were investigated and compared with finite element results. Based on FEM results, the linear relation between shear strain and effective strain large strains shall be replaced with the logarithmic one. It is also found that for the same amount of shear strain, a higher value of effective strain is accumulated in the material when it is deformed through simple shear rather than pure shear.

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“…The metal ows along the spiral structure in order to prolong the metal deformation distance and produce the torsion effect. In addition, the deformation is increased by accumulating the strain during the extrusion process [9][10].…”

Section: Proposal Of Multi-directional Loading Rotary Extrusionmentioning

confidence: 99%

New technology of multi-directional loading rotary extrusion

Zhang

Xue

Zhang

et al. 2022

Preprint

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Aiming at the demand of precise forming of large-scale high-performance lightweight components with inner ring reinforcement, a new multi-directional loading rotary extrusion forming technology is developed, which matches the linear motion with the rotary motion and actively increases the strong shear force. Its principle is that while the blank is axially extruded and loaded, the radial force and rotating torque are increased. Through the synergistic action of axial, radial and rotating motion, the orderly flow of metal is controlled and the cumulative severe plastic deformation (SPD) of "uplift-trowel" micro area is generated, so as to realize the uniform strengthening and toughening of materials. At the same time, through the continuous deformation of punch "ellipse-circle", high reinforcement is grown on the cylinder wall to achieve the high-quality forming of cylindrical parts or inner ring reinforcement components. This technology enriches the plastic forming theory and widens the application field of plastic forming. In addition, the formed large-scale high-performance inner ring stiffened magnesium (Mg) components have been successfully verified in aerospace equipment, solves the problems of integral forming and severe deformation strengthening and toughening of large-scale inner ring stiffened components, and has a good prospect of popularization and application.

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Experimental and finite element analyses of plastic deformation behavior in vortex extrusion

Cited by 15 publications

References 19 publications

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Equivalent strain at large shear deformation: Theoretical, numerical and finite element analysis

New technology of multi-directional loading rotary extrusion

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