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dc.contributor.author신동혁-
dc.date.accessioned2021-02-16T05:26:25Z-
dc.date.available2021-02-16T05:26:25Z-
dc.date.issued2001-06-
dc.identifier.citationMATERIALS TRANSACTIONS, v. 42, issue. 6, page. 1074-1080en_US
dc.identifier.issn1347-5320-
dc.identifier.issn1345-9678-
dc.identifier.urihttps://www.jstage.jst.go.jp/article/matertrans/42/6/42_6_1074/_article/-char/en-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/158357-
dc.description.abstractAn ultra-fine grained (UFG) structure was introduced in a commercial 5083 Al alloy with an initial grain size of ∼ 200 \\micron using the equal channel angular pressing (ECAP) technique. ECAP was successfully conducted at 473 K on the same sample up to a total of 8 pressings through the die such that the sample was rotated 180° around its longitudinal axis between pressings. The microstructure was reasonably homogeneous after a single pressing and consisted of parallel bands of elongated substructure having an average width of 0.2 \\micron and an average length of 0.8 \\micron. An equiaxed ultra-fine grained structure of ∼ 0.3 \\micron was obtained in the present alloy after 4 pressings. The ultra-fine grains were thermally stable at 523 K . The yield stress of as-received 5083 Al alloy was 129 MPa, whereas it increased to 249 MPa after a single pressing and finally became 290 MPa after 8 pressings, which was superior to that of a conventional 5083-H321 Al alloy. In addition, in this study, the feasibility of low temperature superplasticity of a UFG 5083 Al alloy was examined. It was found that the 5083 Al alloy with a grain size of ∼ 0.3 \\micron exhibited a superplastic-like behavior with elongation to failure in excess of 200% below 523 K.en_US
dc.description.sponsorshipThis work was supported by the 'National Research Laboratory Program' of Korean Ministry of Science and Technology.en_US
dc.language.isoen_USen_US
dc.publisherJAPAN INST METALS & MATERIALSen_US
dc.subjectequal channel angular pressingen_US
dc.subjectultra-fine grain structureen_US
dc.subject5083 aluminum alloyen_US
dc.subjectmicrohardnessen_US
dc.subjecttensile propertiesen_US
dc.subjectlow temperature superplasticityen_US
dc.titleMicrostructures and Mechanical Properties of Equal Channel Angular Pressed 5083 Al Alloyen_US
dc.typeArticleen_US
dc.identifier.doi10.2320/matertrans.42.1074-
dc.relation.journalMATERIALS TRANSACTIONS-
dc.contributor.googleauthorChang, Si-Young-
dc.contributor.googleauthorLee, Jung Guk-
dc.contributor.googleauthorPark, Kyung-Tae-
dc.contributor.googleauthorShin, Dong Hyuk-
dc.relation.code2009206499-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING-
dc.identifier.piddhshin-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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