Equal channel angular pressing technique for the formation of ultra-fine grained structures

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dc.contributor.authorSanusi, Kazeem O.en_ZA
dc.contributor.authorMakinde, Oluwole D.en_ZA
dc.contributor.authorOliver, Graeme J.en_ZA
dc.date.accessioned2013-07-03T08:18:34Z
dc.date.available2013-07-03T08:18:34Z
dc.date.issued2012-10-02
dc.descriptionCITATION: Sanusi, K. O., Makinde, O. D. & Oliver, G. J. 2012. Equal channel angular pressing technique for the formation of ultra-fine grained structures. South African Journal of Science, 108(9/10), Art. #212, doi:10.4102/sajs.v108i9/10.212.
dc.descriptionThe original publication is available at http://sajs.co.za
dc.description.abstractENGLISH ABSTRACT: Equal channel angular pressing is one of the techniques in metal forming processes in which an ultra-large plastic strain is imposed on a bulk material in order to make ultra-fine grained and nanocrystalline metals and alloys. The technique is a viable forming procedure to extrude materials by use of specially designed channel dies without substantially changing the geometry by imposing severe plastic deformation. This technique has the potential for high strain rate superplasticity by effective grain refinement to the level of the submicron-scale or nanoscale. Wereview recent work on new trends in equal channel angular pressing techniques and the manufacturing of die-sets used for the processing of metals and alloys. We also experimented on a copper alloy using the equal channel angular pressing technique to examine the microstructural, mechanical and hardness properties of the ultra-fine grained and nanocrystalline materials produced. After deformation, all samples were subjected to a hardness test and the results showed improved mechanical behaviour of the ultra-fine grained copper alloy that was developed. This research provides an opportunity to examine the significance of the equal channel angular pressing process for metals and alloys. That is, these ultra-fine grained materials can be used in the manufacturing of semi-finished products used in the power, aerospace, medical and automotive industries.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Geen opsomming beskikbaaraf_ZA
dc.description.urihttp://sajs.co.za/equal-channel-angular-pressing-technique-formation-ultra-fine-grained-structures/sanusi-kazeem-makinde-oluwole-oliver-graeme
dc.description.versionPublisher's version
dc.format.extent7 pagesen_ZA
dc.identifier.citationSanusi, K. O., Makinde, O. D. & Oliver, G. J. 2012. Equal channel angular pressing technique for the formation of ultra-fine grained structures. South African Journal of Science, 108(9/10), Art. #212, doi:10.4102/sajs.v108i9/10.212.
dc.identifier.issn1996-7489 (online)
dc.identifier.otherdoi:10.4102/sajs.v108i9/10.212
dc.identifier.urihttp://hdl.handle.net/10019.1/81085
dc.publisherAcademy of Science of South Africaen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectNanostructured materialsen_ZA
dc.subjectMetallic alloysen_ZA
dc.subjectMetalsen_ZA
dc.subjectAluminum formingen_ZA
dc.titleEqual channel angular pressing technique for the formation of ultra-fine grained structuresen_ZA
dc.typeArticleen_ZA
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