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dc.contributor.authorMegumi Kawasaki-
dc.date.accessioned2018-03-07T00:55:34Z-
dc.date.available2018-03-07T00:55:34Z-
dc.date.issued2012-11-
dc.identifier.citationJOURNAL OF MATERIALS SCIENCE 권: 47 호: 22 페이지: 7782-7788en_US
dc.identifier.issn0022-2461-
dc.identifier.urihttp://link.springer.com/article/10.1007%2Fs10853-012-6587-8-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/43014-
dc.description.abstractA copper alloy, Cu-0.1 %Zr, was subjected to severe plastic deformation at room temperature using quasi-constrained high-pressure torsion. Disks were strained through different numbers of revolutions up to a maximum of ten turns under an applied pressure of 6.0 GPa and then examined to evaluate the evolution in the Vickers microhardness, Hv, and the microstructure. The results show lower values of Hv in the center regions of the disks in the early stages of processing but a gradual evolution to a high degree of hardness homogeneity after five and ten turns. Under conditions of hardness homogeneity, the distributions of the grain boundary misorientations are essentially identical at the center and the periphery of the sample. Homogeneity was further confirmed by conducting tensile testing at elevated temperatures where similar stress-strain curves and similar elongations to failure were recorded after processing through five and ten turns of HPT.en_US
dc.description.sponsorshipThis study was supported in part by the National Science Foundation of the United States under Grant no. DMR-0855009 and in part by the European Research Council under ERC Grant Agreement no. 267464-SPDMETALS.en_US
dc.language.isoenen_US
dc.publisherSPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USAen_US
dc.subjectULTRAFINE-GRAINED COPPERen_US
dc.subjectSTACKING-FAULT ENERGYen_US
dc.subjectHIGH-PURITY ALUMINUMen_US
dc.subjectMICROSTRUCTURAL EVOLUTIONen_US
dc.subjectMECHANICAL-PROPERTIESen_US
dc.subjectSUPERPLASTIC FLOWen_US
dc.subjectPURE ALUMINUMen_US
dc.subjectMICROHARDNESSen_US
dc.subjectDEFORMATIONen_US
dc.subjectSTRAINen_US
dc.titleAchieving homogeneity in a Cu-Zr alloy processed by high-pressure torsionen_US
dc.typeArticleen_US
dc.relation.no22-
dc.relation.volume47-
dc.identifier.doi10.1007/s10853-012-6587-8-
dc.relation.page7782-7788-
dc.relation.journalJOURNAL OF MATERIALS SCIENCE-
dc.contributor.googleauthorWongsa-Ngam, Jittraporn-
dc.contributor.googleauthorKawasaki, Megumi-
dc.contributor.googleauthorLangdon, Terence G.-
dc.relation.code2012205382-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF MATERIALS SCIENCE AND ENGINEERING-
dc.identifier.pidmegumi-
dc.identifier.researcherIDA-1872-2010-
dc.identifier.orcidhttp://orcid.org/0000-0003-0028-3007-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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