Severe plastic deformation by incremental angular splitting

Rosochowski, Andrzej; Rosochowska, Malgorzata; Olejnik, Lech

doi:10.1007/s10853-012-7108-5

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…15c) separates material shearing and feeding for small successive steps "a" that reduces the press capacity and allows processing of long billets. A few versions of I-ECAP tested on a laboratory scale were presented in [65].…”

Section: Modifications Of Ecaementioning

confidence: 99%

Review: Modes and Processes of Severe Plastic Deformation

Segal¹

2018

Preprint

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In this review, severe plastic deformation (SPD) is considered as a materials processing technology. The deformation mode is the principal characteristic differentiating SPD techniques from common forming operations. For large plastic strains, deformation mode depends on the distribution of strain rates between continuum slip lines and can be varied from pure shear to simple shear. A scalar, invariant and dimensionless coefficient of deformation mode is introduced as a normalized speed of rigid rotation. On this basis, simple shear provides the optimal mode for structure modification and grain refinement whereas pure shear is "ideal" for forming operations. Special experiments and SPD practice confirm this conclusion. Various techniques of SPD are classified and described in accordance with simple shear realization or approximation. It is shown that correct analyses of the processing mechanics and technological parameters are essential for comparison of SPD techniques and the development of effective industrial technologies.

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Section: Modifications Of Ecaementioning

confidence: 99%

Review: Modes and Processes of Severe Plastic Deformation

Segal¹

2018

Preprint

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“…SSE has been partially reviewed and discussed in the literature, mostly in terms of comparison between different SPD techniques [34][35][36][37][38][39][40]. However, this technique and its variant, CSSE, pose several distinctive features that are thus far published in separate articles.…”

Section: Introductionmentioning

confidence: 99%

Simple shear extrusion as an efficient severe plastic deformation technique: A review

Ebrahimi

Lotfabad

2023

Materials Science and Technology

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Simple shear extrusion was designed in 2009 as a novel severe plastic deformation technique to obtain ultrafine-grained materials. During the past years, extensive work has been done to introduce and clarify this technique's characteristics and investigate its application in different areas of materials science and engineering. Owing to the inherent phenomenon of strain reversal associated with this technique and different available processing routes, this method is proven to be useful in material processing. This article aims to summarise the ability of this process to produce ultrafine-grained materials and discuss the potential of this process for industrialisation.

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“…The second group consists of techniques based on developing a single angular channel to multichannel systems. An example of this is the -shaped ECAP method [ 16 , 17 ], where the channel takes shape “┬” or forms an intersecting pattern “┼” as in cross channel extrusion CCE ( Figure 1 ) [ 18 ]. The mentioned aspect of the production of UFGs in the structure relates to the possibility of obtaining high values of total deformation by repeating the basic process.…”

Section: Introductionmentioning

confidence: 99%

Influence of Strain Route Changes on the Microstructure and Mechanical Properties of CuZn36 Alloy during Cross Channel Extrusion CCE

Łyszkowski

2022

Materials

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This study evaluates the impact of changing the deformation routes of the extrusion process in a cross-shaped die (CCE) on the structure and properties of a CuZn36 alloy (% at.). Samples with dimensions of Ø8 × 36 mm were subjected to extrusion at room temperature according to two variants: straight extrusion in the A route (2-, 4-, 8- and 12-pass) and extrusion with interoperative rotation by 90° in the BC route (2- and 4-pass). The improvement of strength properties was obtained as a result of grain fragmentation in the CCE process. Changes in the microstructure were observed using a light microscope, and mechanical properties were measured in the microhardness test and a static tensile test. The obtained results showed that the mechanical properties of the alloy depend on the number of passes and the material deformation route. This observation was related to the fragmentation of its structure and strengthening, which resulted in changes in its properties. The highest strength was characterized by the material pressed four times with the rotation of 90° (BC route), whose properties were comparable and even slightly better than the material squeezed twelve times without rotation (A route).

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Severe plastic deformation by incremental angular splitting

Abstract: A new way of generating large plastic strain in a billet by splitting it plastically by a reciprocating punch is investigated.

Cited by 10 publications

References 13 publications

Review: Modes and Processes of Severe Plastic Deformation

Review: Modes and Processes of Severe Plastic Deformation

Simple shear extrusion as an efficient severe plastic deformation technique: A review

Influence of Strain Route Changes on the Microstructure and Mechanical Properties of CuZn36 Alloy during Cross Channel Extrusion CCE

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