Effect of equal-channel angular pressing on room temperature superplasticity of quasi-single phase Zn-0.3Al alloy

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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.accessioned2019-04-20T21:43:47Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:47Z
dc.date.issued2015
dc.departmentBayburt Üniversitesien_US
dc.description.abstractQuasi-single phase (dilute) Zn-0.3Al alloy was subjected to severe plastic deformation via equal-channel angular extrusion/pressing (ECAE/P), and the effects of ECAP on its room temperature (RT) and high strain rate (HSR) superplasticity and deformation mechanism were investigated. Multi-pass ECAP may refine the coarse-grained microstructure into the fine grained (FG) one. The grain size of Zn-matrix phase decreased down to 2.0m after ECAP. Many spherical Al-rich precipitates decomposed and homogeneously distributed inside the matrix phase. They are ultrafine grained (UFG) ?-particles with the grain sizes ranging from 50nm to ~200nm. This special microstructure having FG and UFG micro-constituents brought about an improvement in RT superplasticity even at HSRs. While multi-pass ECAP decreased flow stress of the alloy, its elongation to failure increased substantially depending on the initial strain rates. The maximum elongation was 1000% at a low strain rate of 10-4s-1, and 350% elongation was achieved at a high strain rate of 10-2s-1. Grain boundary sliding (GBS) was found to be the main deformation mechanism in region-II as the optimum superplastic region. © 2015 Elsevier B.V..en_US
dc.identifier.doi10.1016/j.msea.2015.07.041
dc.identifier.endpage24
dc.identifier.issn0921-5093
dc.identifier.scopus2-s2.0-84937785869en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage17
dc.identifier.urihttps://dx.doi.org/10.1016/j.msea.2015.07.041
dc.identifier.urihttps://hdl.handle.net/20.500.12403/681
dc.identifier.volume644
dc.identifier.wosWOS:000361258200003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
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.subjectDilute Zn-Al alloys
dc.subjectFine-grained microstructure
dc.subjectRoom temperature superplasticity
dc.subjectSevere plastic deformation
dc.subjectAluminum
dc.subjectElongation
dc.subjectExtrusion
dc.subjectGrain boundaries
dc.subjectGrain boundary sliding
dc.subjectGrain size and shape
dc.subjectMicrostructure
dc.subjectPlastic deformation
dc.subjectPressing (forming)
dc.subjectStrain rate
dc.subjectSuperplasticity
dc.subjectZinc
dc.subjectDeformation mechanism
dc.subjectEqual channel angular extrusion
dc.subjectFine-grained microstructure
dc.subjectGrain-boundary slidings
dc.subjectRoom-temperature superplasticity
dc.subjectSevere plastic deformations
dc.subjectUltra-fine grained ( UFG)
dc.subjectZnAl alloy
dc.subjectEqual channel angular pressing
dc.subjectDilute Zn-Al alloys
dc.subjectFine-grained microstructure
dc.subjectRoom temperature superplasticity
dc.subjectSevere plastic deformation
dc.subjectAluminum
dc.subjectElongation
dc.subjectExtrusion
dc.subjectGrain boundaries
dc.subjectGrain boundary sliding
dc.subjectGrain size and shape
dc.subjectMicrostructure
dc.subjectPlastic deformation
dc.subjectPressing (forming)
dc.subjectStrain rate
dc.subjectSuperplasticity
dc.subjectZinc
dc.subjectDeformation mechanism
dc.subjectEqual channel angular extrusion
dc.subjectFine-grained microstructure
dc.subjectGrain-boundary slidings
dc.subjectRoom-temperature superplasticity
dc.subjectSevere plastic deformations
dc.subjectUltra-fine grained ( UFG)
dc.subjectZnAl alloy
dc.subjectEqual channel angular pressing
dc.titleEffect of equal-channel angular pressing on room temperature superplasticity of quasi-single phase Zn-0.3Al alloyen_US
dc.typeArticleen_US

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