Equal channel angular pressing–forward extrusion (ECAP–FE) consolidation of Al particles

Reihanian, M.; Bagherpour, E.; Sharifzadeh, Mohsen; Zarinejad, Mehrdad; Dean, Trevor

doi:10.1016/j.matdes.2008.06.012

Cited by 39 publications

(16 citation statements)

References 13 publications

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“…This remedy reduced the tool-workpiece interfacial friction and, consequently, the required forming load and energy reduced significantly. To increase the ECAE abilities, some traditional forming processes such as the forward extrusion were also combined with this process [22,23].…”

Section: Introductionmentioning

confidence: 99%

Expansion equal channel angular extrusion, as a novel severe plastic deformation technique

Sepahi-Boroujeni

Fereshteh-Saniee

2015

J Mater Sci

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A novel severe plastic deformation (SPD) process, namely expansion equal channel angular extrusion (Exp-ECAE) is proposed in this paper. With this regard, a spherical cavity is provided at the junction of the ECAE channels. The numerical simulations of the Exp-ECAE process resulted in finding suitable tool geometry for this operation. Using this optimum shape, several practical Exp-ECAE experiments were conducted with AA6063 aluminum at different process conditions. Because of the expansion cavity, a pseudo back-pressure mechanism was provided for the tests. The experimental findings showed that after the 1st pass of the Exp-ECAE process, the yield stress and hardness of the material were increased about 300 and 50 %, respectively. These improvements were much more than those achieved via other SPD techniques such as ECAE and twist extrusion for the same alloy. The homogeneity of hardness distribution along the cross section of the Exp-ECAE product was also acceptable. Further passes of the process just resulted in better ductility for the component such that after the 3rd pass, almost 97 % of ductility of the annealed billet was recovered. However, a slight decrease in the strength of the product was observed after the 2nd and 3rd passes.

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Section: Introductionmentioning

confidence: 99%

Expansion equal channel angular extrusion, as a novel severe plastic deformation technique

Sepahi-Boroujeni

Fereshteh-Saniee

2015

J Mater Sci

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“…Paydar et al [161,162] investigated the integration of ECAP upstream and downstream of forward extrusion, whereby an alternating ductility of the pure aluminum resulted.…”

Section: Product Property: Formabilitymentioning

confidence: 99%

Metal forming beyond shaping: Predicting and setting product properties

et al. 2015

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“…The only limitation with this method is the need for application of high back pressure during shear deformation to achieve fully dense products [6]. Paydar et al showed that combination of ECAP with conventional forming process, namely extrusion, omit the need for applying back pressure and lead to interesting results [9,10]. They introduced two different routes namely equal channel angular pressing-forward extrusion (ECAP-FE) and forward extrusion-equal channel angular pressing (FE-ECAP) [9,10].…”

Section: Introductionmentioning

confidence: 99%

Equal channel angular pressing–forward extrusion (ECAP–FE) consolidation of Al particles

Cited by 39 publications

References 13 publications

Expansion equal channel angular extrusion, as a novel severe plastic deformation technique

Expansion equal channel angular extrusion, as a novel severe plastic deformation technique

Metal forming beyond shaping: Predicting and setting product properties

Application of forward extrusion-equal channel angular pressing (FE-ECAP) in fabrication of aluminum metal matrix composites

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