Equal-channel angular pressing: influence of die design on pressure forces, strain homogeneity, and corner gap formation

Sordi, Vitor Luiz; Filho, Anibal de Andrade Mendes; Valio, Gustavo Trindade; Springer, Phillip; Rubert, José Benaque; Ferrante, M.

doi:10.1007/s10853-015-9547-2

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…will decrease the pressing force required [13]. To ease the sample extrusion required during ECAP especially at room temperature, many researchers have adopted higher die angle even though it resulted in smaller equivalent strain [14][15][16].…”

Section: Mechanical and Microstructure Propertiesmentioning

confidence: 99%

“…Thus, increasing the die angle allows the shear deformation to avoid specimen fracture, resulting in dynamic recrystallization [12]. Furthermore, a higher die angle will decrease the pressing force required [13]. To ease the sample extrusion required during ECAP especially at room temperature, many researchers have adopted higher die angle even though it resulted in smaller equivalent strain [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Shri

Zahari

Yamamoto

2021

Metals

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In this study, ultrafine grain (UFG) SS316L was produced using an equal channel angular pressing (ECAP) process at two different die angles namely 120° and 126°. The effect of different die angles on mechanical, corrosion, and surface properties were thoroughly investigated. Furthermore, the subsequent effect on the cytotoxicity of SS316L was investigated. The microstructure observation shows ECAP processing has produced an elongated, finer grain size at 120° than 126°. The ECAP processing also increases the hardness of SS316L. There is no change in wettability and surface roughness observed. However, the ectrochemical measurement reveals that ECAP processing improves the corrosion resistance of SS316L. The cytocompatibility of ECAPed SS316L was evaluated by both a direct and an extract methods, finding the contribution of grain refinement by ECAP processing.

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Section: Mechanical and Microstructure Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Shri

Zahari

Yamamoto

2021

Metals

View full text Add to dashboard Cite

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“…There are various techniques of severe plastic deformation (SPD) that have been developed and applied in various applications. The technique includes equal channel angular pressing (ECAP) [6][7][8] with high pressure torsion (HPT) [9][10], accumulative roll bonding (ARB) [11][12], constrained groove pressing (CGP) [13][14], accumulative back extrusion (ABE) [15][16] and tubular channel angular pressing (TCAP) [17][18].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review on the Influence of Equal Channel Angular Pressing Parameters on Magnesium Alloys

Salleh¹,

Rahman²,

Yahaya³

et al. 2020

International Journal of Engineering Research and Technology

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“…However, as strain magnitude getting higher, the distribution of the strain across the samples may be compromised. The pressing force required also may increase with lower angle [9]. Finite element analysis (FEM) has been used for analysis on strain distribution, strain inhomogeneity [10], and the peak pressure required for pressing.…”

Section: Introductionmentioning

confidence: 99%

“…Finite element analysis (FEM) has been used for analysis on strain distribution, strain inhomogeneity [10], and the peak pressure required for pressing. In the ECAP process, most of the FEM analysis done to analyse the deformation behaviour and the strain behaviour on the materials [9,10]. This includes the effect of friction on the material movement [11], the type of material used [12][13][14], the effect of using back pressure to the process [15], and the strain localisation achieved in the sample under several parameters [16].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of Equal Channel Angular Pressing: Effect of Die Angle and Number of Passes

Shri

Hassan

Zahari

et al. 2019

IJAME

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Equal channel angular pressing (ECAP) is one of the popular severe plastic deformation processes used to produce bulk nanostructured materials. The degree of homogeneity of nanostructured is affected by various die parameters. In this paper, the effect of internal die angle (ϕ) and number of passes (N) on the strain behaviour of Aluminium Alloy 6061 (AA6061) during ECAP was investigated by using three-dimensional finite element analysis. The effect of number of passes and die angle on the homogeneity within the workpiece was analysed in terms of contours, radial view contour and inhomogeneity index. The analysis is done by comparing workpiece extruded up to 8 passes at die angle of 120° and 126°. It is observed that the resulting strain is higher at 120° die. However, the inhomogeneity index is decreasing in a similar pattern in both dies. The simulation results shed some lights on the optimum design of ECAP die for homogeneous microstructure.

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Equal-channel angular pressing: influence of die design on pressure forces, strain homogeneity, and corner gap formation

Cited by 15 publications

References 26 publications

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

Effect of ECAP Die Angle on Mechanical Properties and Biocompatibility of SS316L

A Comprehensive Review on the Influence of Equal Channel Angular Pressing Parameters on Magnesium Alloys

Finite Element Simulation of Equal Channel Angular Pressing: Effect of Die Angle and Number of Passes

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