Forming of Tubular Commercial Purity Aluminum by ECAP

Valder, James; Rijesh, M.; Surendranathan, A. O.

doi:10.1080/10426914.2011.610081

Cited by 26 publications

(20 citation statements)

References 11 publications

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“…Baker et al [9] have studied ECAE through a die with channel width 19 mm. Luis Pérez et al [8,10] have analyzed ECAE for die channel width 9 mm.…”

Section: Approachesmentioning

confidence: 99%

“…Valder et al [9] have applied a plain plastic flow model to the forming of tubular commercial purity aluminum with a circular shaped cross-section by ECAP. Luis Pérez et al [8,10] have simulated plastic flow of the workpiece with rectangular shape of cross sections A 0 A 0 Ã D 0 D 0 Ã but have outlined experimental ECAE results for workpieces with circular cross-section shape.…”

Section: Approachesmentioning

confidence: 99%

“…The geometric forms of the external angular die walls defined by such second-order curves as hyperbolic arcs, parabolic arcs, elliptical arcs, and catenary curves have received inadequate attention in previous known publications [1][2][3][4][5][6][7][8][9][10][11]. Therefore, the present research has addressed these more complex geometries.…”

Section: Introductionmentioning

confidence: 98%

“…Luis Pérez and Luri [8] have used both a finite element method (FEM) and analytical methods based on the upper bound method for modelling and comparing the forces required in the ECAE process when strain-hardening of materials has been considered. Valder et al [9] have studied the suitability of the ECAE technique for tubular specimens processed with an ECAE die with an angle of 150 between the two intersecting channels in an Iwahashi 2h-die. Luis et al [10] have obtained experimental results for ECAE processing of Armco-Fe at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In order to eliminate end or edge effect formation Sedighi and Mahmoodi [11] have applied a continuous ECAE scheme for sheet workpiece processing with the introduction of an Equal Channel Angular Rolling (ECAR) technique. However, the plastic flow of materials during ECAE through angular dies with more complex geometry has not been sufficiently studied in known publications [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Shape Effect of Angular Die External Wall on Strain Unevenness during Equal Channel Angular Extrusion

Perig

Zhbankov

Matveyev

et al. 2013

Materials and Manufacturing Processes

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The principal objective of the present article is to take into account the effect of deformation zone geometry on the deformation unevenness of material plastic flow in the Equal Channel Angular Extrusion (ECAE) of metals through the use of 2D Finite-Element Simulation. This approach allows us to analyze plastic material flow through the proposed generalized Iwahashi angular die with a variable external wall at the channel intersection zone. A varied set of quadratic curves has been used to define the possible external wall of the contact surface zone. The proposed approach allows us to extend ideas concerning the influence of the angular die deformation zone external wall on the energy-power parameters of the equal channel material flow. The results indicate that the preferred choice is to introduce the external die wall in the form of a hyperbola, which allows the achievement of high strain intensity 0.692 . . . 0.792, low strain unevenness 0.167 . . . 0.310, and low material waste 0.016 . . . 0.047 during one pass of the processed metal through the generalized angular die with a channel intersection angle of 90 .

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“…Baker et al [9] have studied ECAE through a die with channel width 19 mm. Luis Pérez et al [8,10] have analyzed ECAE for die channel width 9 mm.…”

Section: Approachesmentioning

confidence: 99%

Section: Approachesmentioning

confidence: 99%