Comparison of microstructure and mechanical properties of pure copper processed by twist extrusion and equal channel angular pressing

Bahadori, Sh. Ranjbar; Dehghani, K.; Mousavi, S.A.A. Akbari

doi:10.1016/j.matlet.2015.03.063

Cited by 23 publications

(12 citation statements)

References 11 publications

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“…For a matrix with an oval-shaped die cross-section: , [36] with a rectangular shaped (RE) (a) and flat oval (FO) (b) cross-sections (l d is the length of the helical part of the die channel and h s is the pitch of the helical surface).…”

Section: Integral Strain Characteristics For Deformation By Tementioning

confidence: 99%

“…This refers particularly to aluminum and Al alloys, [41][42][43]49,52,72,118,119] copper and Cu alloys, [25,34,36,39,45,63,65,68,[120][121][122][123] titanium and its alloys, [64,65,70,[124][125][126][127][128][129] as well as various steels. This refers particularly to aluminum and Al alloys, [41][42][43]49,52,72,118,119] copper and Cu alloys, [25,34,36,39,45,63,65,68,[120][121][122][123] titanium and its alloys, [...…”

Section: Ultrafine Grained Structurementioning

confidence: 99%

“…[36,41,91,123,124] In Sections 2 and 3.1, the cyclic character of deformation under TE was considered and two possible routes were discussed: multipass TE with dies with the same sign of shear in their two shear zones (route I) and those with opposite sign of shear (route II). This can be attributed to a reduced tendency to grain fragmentation with increasing strain.…”

Section: Reviewmentioning

confidence: 99%

“…As shown in ref., [43,91] route II gives rise to more effective fragmentation, which is also in agreement with the theoretical predictions and experimental evidence. [36,91,126,136,137] It first drops after a few TE passes to increase with further progress of TE deformation.…”

Section: Reviewmentioning

confidence: 99%

“…[25,36,45,[70][71][72]129] The most advanced one is by Latypov et al, [25] in which the TE texture of copper was examined with the help of Orientation Distribution Functions (ODFs), both experimentally and by numerical simulation. There are, however, limited studies on the textures that develop as a result of TE.…”

Section: Texturementioning

confidence: 99%

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Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

et al. 2017

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Twist extrusion (TE) is one of the most popular techniques of severe plastic deformation, aiming at imparting to a material a tailored microstructure and the associated property improvement. The article provides a survey of the literature on the mechanics of TE and the effect it has on the structure, texture, and the attendant properties of various materials, including metals and alloys, powder materials, and polymers. Special emphasis is placed on vortex flow during TE and its hitherto unexplored potential for producing micro-and macrostructures that promise superior properties of the materials. In particular, the possibility of creating novel hybrid materials with chiral inner architecture is demonstrated. The survey is concluded by a presentation of examples of practical applications of TE.

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Section: Integral Strain Characteristics For Deformation By Tementioning

confidence: 99%

Section: Ultrafine Grained Structurementioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

Section: Reviewmentioning

confidence: 99%

Section: Texturementioning

confidence: 99%

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Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

et al. 2017

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Modeling and Characterization of Texture Evolution in Twist Extrusion

Latypov

Lee

Beygelzimer

et al. 2015

Metall Mater Trans A

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Twist extrusion (TE) is a severe plastic deformation method with a potential for commercialization. Deformation during the TE process is non-uniform and non-monotonic, which is expected to result in significant and non-trivial microstructural changes in metallic materials. In this study, texture evolution during TE of pre-textured copper was investigated. Experimental characterization of textures after various numbers of passes demonstrated that TE can be used for producing uniformly weak textures in pre-textured copper. Crystal plasticity simulations were found to run into the problem known as strain reversal texture. In particular, crystal plasticity simulations predicted the return of initial texture upon strain reversal in the first pass of TE, whereas the experimental texture was not reversed and had components related to simple shear. Grain refinement, imperfect strain reversal, and material asymmetry are proposed to be responsible for the occurrence of strain reversal texture in TE. Effects of the non-random initial texture on the microstructure and texture evolution are also discussed.

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Multi-channel Spiral Twist Extrusion (MCSTE): A Novel Severe Plastic Deformation Technique for Grain Refinement

El-Garaihy

Fouad

Salem

2018

Metall Mater Trans A

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Comparison of microstructure and mechanical properties of pure copper processed by twist extrusion and equal channel angular pressing

Cited by 23 publications

References 11 publications

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

Twist Extrusion as a Potent Tool for Obtaining Advanced Engineering Materials: A Review

Modeling and Characterization of Texture Evolution in Twist Extrusion

Multi-channel Spiral Twist Extrusion (MCSTE): A Novel Severe Plastic Deformation Technique for Grain Refinement

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