Improvement of high strain rate and room temperature superplasticity in Zn-22Al alloy by two-step equal-channel angular pressing

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dc.authorid56405308400
dc.authorid6505883105
dc.authorid56031830800
dc.authorid56088826000
dc.authorid56068835900
dc.contributor.authorDemirtas M.
dc.contributor.authorPurcek G.
dc.contributor.authorYanar H.
dc.contributor.authorZhang Z.J.
dc.contributor.authorZhang Z.F.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:44:08Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:44:08Z
dc.date.issued2014
dc.departmentBayburt Üniversitesien_US
dc.description.abstractThe Zn-22Al alloy was subjected to equal-channel angular pressing (ECAP) to improve its high strain rate (HSR) superplasticity at room temperature (RT). A well-designed two-step ECAP process formed an ultrafine-grained (UFG) microstructure with an average grain size of 200nm as the lowest one obtained so far after ECAP processing of this alloy. Also, agglomerate- and texture-free microstructure with UFG Al-rich ?- and Zn-rich ?-grains separated mostly by high-angle grain boundaries (HAGBs) was produced by this process. The maximum RT elongation was achieved to be 400% with a strain rate sensitivity of 0.30 at a very high strain rate of 5×10-2s-1 after the two-step ECAP process. This elongation value is the highest one obtained at RT and at all strain rates for this alloy up to now. The current results demonstrate that such an improvement in superplasticity of Zn-22Al alloy after the two-step ECAP process can enhance its applications where RT and HSR superplasticity are strongly needed. © 2014 Elsevier B.V.en_US
dc.identifier.doi10.1016/j.msea.2014.09.114
dc.identifier.endpage240
dc.identifier.issn0921-5093
dc.identifier.scopus2-s2.0-84908641752en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage233
dc.identifier.urihttps://dx.doi.org/10.1016/j.msea.2014.09.114
dc.identifier.urihttps://hdl.handle.net/20.500.12403/780
dc.identifier.volume620
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Ltd
dc.relation.ispartofMaterials Science and Engineering Aen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHigh strain rate superplasticity
dc.subjectUltrafine-grained materials
dc.subjectZn-22Al alloy
dc.subjectHigh strain rates
dc.subjectHigh-strain-rate superplasticity
dc.subjectRoom-temperature superplasticity
dc.subjectUltrafine grained materials
dc.subjectZn-22Al
dc.subjectHigh strain rate superplasticity
dc.subjectUltrafine-grained materials
dc.subjectZn-22Al alloy
dc.subjectHigh strain rates
dc.subjectHigh-strain-rate superplasticity
dc.subjectRoom-temperature superplasticity
dc.subjectUltrafine grained materials
dc.subjectZn-22Al
dc.titleImprovement of high strain rate and room temperature superplasticity in Zn-22Al alloy by two-step equal-channel angular pressingen_US
dc.typeArticleen_US

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