Microstructural and Mechanical Properties of a Material Processed by Streamline Proposed Vortex Extrusion Die

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

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자료유형: 학술저널

저자정보: M. Shahbaz (Urmia University) N. Pardis (Shiraz University) J. Moon (Pohang University of Science and Technology (POSTECH)) R. Ebrahimi (Shiraz University) H. S. Kim (Pohang University of Science and Technology (POSTECH))

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.3

발행연도: 2021.1

수록면: 522 - 529 (8page)

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Vortex extrusion (VE), as a severe plastic deformation technique, uses a novel designed stationary die that imposes intensestrain to the processed material. Materials in the VE process experience torsional deformation and simultaneous reductionin area. The amount and intensity of this additional deformation vary according to the radius moving from the center to thesurface of the VE die due to variations in the path of the material through a radius proposed by the Beziers’ formulation. In the present study, the VE die is designed through a streamline approach based on a cubic Beziers’ formulation that wasemployed to investigate the microstructural and mechanical properties of the processed samples and to link the results tothose obtained through a finite element analysis of this technique. The results of the microstructural characterization exhibita higher fraction of high-angle grain boundaries of the VE processed samples compared to what can be achieved by conventionalextrusion-processed. Consequently, a significant improvement was observed in tensile properties of the samples afterSPD processing using the proposed streamlined VE die.

#Severe plastic deformation · Vortex extrusion · Streamline approach · Microstructure · Mechanical properties

참고문헌 (29)

참고문헌 신청

Y. Estrin / 2013 / Extreme grain refinement by severe plastic deformation : a wealth of challenging science / Acta Mater 61:782~817

E. Bagherpour / 2019 / An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications / Int. J. Adv. Manuf. Technol. 100:1647~1694

T. G. Langdon / 2006 / Principles of equal-channel angular pressing as a processing tool for grain refinement / Prog. Mater Sci 51:881~981

H. H. Lee / 2018 / Single-roll angular-rolling : a new continuous severe plastic deformation process for metal sheets / Scripta Mater 146:204~207

N. Pardis / 2011 / Cyclic expansion-extrusion(CEE) : A modified counterpart of cyclic extrusion-compression(CEC) / Mater. Sci. Eng. A 528:7537~7540

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