Optimization of RT superplasticity of UFG Zn-22Al alloy by applying ECAP at different temperatures and phase regions

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dc.authorid56405308400
dc.authorid56031830800
dc.authorid6505883105
dc.contributor.authorDemirtas M.
dc.contributor.authorYanar H.
dc.contributor.authorPurcek G.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:43:19Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:19Z
dc.date.issued2017
dc.departmentBayburt Üniversitesien_US
dc.description7th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2017
dc.description.abstractZn-22Al alloy was subjected to either one-step or two-step equal channel pressing (ECAP) to investigate the effect of processing temperature on its microstructure and room temperature (RT) superplasticity. In one-step ECAP processes, 4 passes ECAP were applied to the alloy at different temperatures: RT, 100°C and 250°C in two-phase region below eutectoid temperature and 350°C in single-phase region above eutectoid temperature. In two-step ECAP processes, one-step ECAP-processed samples were subjected to four more passes ECAP at RT. Considering the one-step ECAP processing, RT superplasticity increased with decreasing ECAP temperature as expected, and the highest RT superplasticity was achieved as 350% after 4 passes ECAP at RT. On the other hand, application of 4 more passes ECAP at RT to the sample showing the lowest superplastic elongation after one-step ECAP (the sample processed at 350°C) resulted in the maximum RT elongation of 400% at a high strain rate of 5×10-2 s-1. These results suggest that first step temperature of two-step ECAP process is needed to increase above the eutectoid point of Zn-22Al alloy to achieve high RT superplasticity. These results were attributed to the changes in microstructure inside the single-phase and two-phase regions during the processes. © Published under licence by IOP Publishing Ltd.en_US
dc.identifier.doi10.1088/1757-899X/194/1/012033
dc.identifier.issn1757-8981
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85019760568en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://dx.doi.org/10.1088/1757-899X/194/1/012033
dc.identifier.urihttps://hdl.handle.net/20.500.12403/498
dc.identifier.volume194
dc.identifier.wosWOS:000411380900033en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInstitute of Physics Publishing
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAluminum
dc.subjectMicrostructure
dc.subjectNanostructured materials
dc.subjectPlastic deformation
dc.subjectProcessing
dc.subjectStrain rate
dc.subjectSuperplasticity
dc.subjectZinc
dc.subjectECAP processing
dc.subjectEqual-channel
dc.subjectHigh strain rates
dc.subjectPhase region
dc.subjectProcessing temperature
dc.subjectSingle phase region
dc.subjectSuperplastic elongation
dc.subjectTwo-phase region
dc.subjectEqual channel angular pressing
dc.subjectAluminum
dc.subjectMicrostructure
dc.subjectNanostructured materials
dc.subjectPlastic deformation
dc.subjectProcessing
dc.subjectStrain rate
dc.subjectSuperplasticity
dc.subjectZinc
dc.subjectECAP processing
dc.subjectEqual-channel
dc.subjectHigh strain rates
dc.subjectPhase region
dc.subjectProcessing temperature
dc.subjectSingle phase region
dc.subjectSuperplastic elongation
dc.subjectTwo-phase region
dc.subjectEqual channel angular pressing
dc.titleOptimization of RT superplasticity of UFG Zn-22Al alloy by applying ECAP at different temperatures and phase regionsen_US
dc.typeConference Objecten_US

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