DC Field | Value | Language |
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dc.contributor.author | Joo, SH | - |
dc.contributor.author | Kim, HS | - |
dc.date.accessioned | 2017-07-19T13:26:31Z | - |
dc.date.available | 2017-07-19T13:26:31Z | - |
dc.date.created | 2017-01-31 | - |
dc.date.issued | 2016-07 | - |
dc.identifier.issn | 1073-5623 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/36976 | - |
dc.description.abstract | In this study, a constraint ring around a workpiece was employed in order to develop back pressure in addition to a compressive die pressure in high-pressure torsion (HPT) process. The influence of the constraint ring during the HPT process was analyzed using the finite element method and experimental analyses. Greater back pressure was developed when a ring of a stronger material enveloped the workpiece. In the experiments, fracture of a brittle material [e.g., La-based bulk metallic glass (BMG)], was limited even at large shear strain (similar to 315) during the ring-constraint HPT (RC-HPT) process due to reduced tensile stress at the edge of the deforming BMG workpiece. Furthermore, the RC-HPT process had beneficial effects on powder consolidation and bonding. The RC-HPT process exhibited smaller loss of material than did the conventional semi-constrained HPT process. The Cu disk produced by the powder RC-HPT had smaller grain sizes because back pressure generated more dislocations and finer grain size in the Cu workpiece. | - |
dc.language | English | - |
dc.publisher | SPRINGER | - |
dc.relation.isPartOf | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | - |
dc.title | Ring-Constraint High-Pressure Torsion Process | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s11661-016-3518-3 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.47A, no.7, pp.3473 - 3478 | - |
dc.identifier.wosid | 000377434700026 | - |
dc.date.tcdate | 2018-03-23 | - |
dc.citation.endPage | 3478 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 3473 | - |
dc.citation.title | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | - |
dc.citation.volume | 47A | - |
dc.contributor.affiliatedAuthor | Kim, HS | - |
dc.identifier.scopusid | 2-s2.0-84964316570 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.scptc | 0 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | FINITE-ELEMENT-ANALYSIS | - |
dc.subject.keywordPlus | SEVERE PLASTIC-DEFORMATION | - |
dc.subject.keywordPlus | CHANNEL ANGULAR CONSOLIDATION | - |
dc.subject.keywordPlus | BACK PRESSURE | - |
dc.subject.keywordPlus | MAGNESIUM ALLOY | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | METALS | - |
dc.subject.keywordPlus | MICROHARDNESS | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordPlus | DUCTILITY | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
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