The effect of volume fraction and dispersion of icosahedral phase particles on the strength and work hardening of Mg-Zn-Y alloys
DC Field | Value | Language |
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dc.contributor.author | Kwak, T. Y. | - |
dc.contributor.author | Kim, W. J. | - |
dc.date.available | 2020-07-10T05:22:34Z | - |
dc.date.created | 2020-07-06 | - |
dc.date.issued | 2017-01-27 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/6161 | - |
dc.description.abstract | The cast microstructure of a Mg-13Zn-1.55Y alloy (ZW132) with a high volume fraction of I-phase (7.4%) was refined considerably by severe plastic deformation via high-ratio differential speed rolling (HRDSR). Ultrafine grains (0.7-1.3 mu m) with high angle boundary fractions of 0.48-0.50 were obtained after HRDSR with speed ratios of 2 or 3. The alloy processed at a speed ratio of 3 exhibited high strength and high ductility, with a yield stress of 332 MPa and a tensile elongation of 16.3%. The ductility of the rolled ZW alloy was controlled by the work hardening rate, which increased as the amount of I-phase, the degree of refinement of the eutectic I-phase pockets, the degree of dispersion of the broken I-phase particles over the matrix, and the size of the resultant grains increased. A model that considers the contribution of these factors to the work hardening rate was proposed. Grain-size reduction was found to be a major strengthening mechanism. Dispersion of the I-phase particles broken from the eutectic I-phase pockets did not contribute significantly to the material's strength. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | QUASI-CRYSTALLINE PHASE | - |
dc.subject | MECHANICAL-PROPERTIES | - |
dc.subject | MICROSTRUCTURAL EVOLUTION | - |
dc.subject | GRAIN-SIZE | - |
dc.subject | DEFORMATION | - |
dc.subject | EXTRUSION | - |
dc.subject | TEXTURE | - |
dc.subject | SUPERPLASTICITY | - |
dc.subject | TEMPERATURE | - |
dc.subject | REFINEMENT | - |
dc.title | The effect of volume fraction and dispersion of icosahedral phase particles on the strength and work hardening of Mg-Zn-Y alloys | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, W. J. | - |
dc.identifier.doi | 10.1016/j.msea.2016.12.063 | - |
dc.identifier.scopusid | 2-s2.0-85006833209 | - |
dc.identifier.wosid | 000393938300036 | - |
dc.identifier.bibliographicCitation | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.684, pp.284 - 291 | - |
dc.relation.isPartOf | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.citation.title | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | - |
dc.citation.volume | 684 | - |
dc.citation.startPage | 284 | - |
dc.citation.endPage | 291 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | QUASI-CRYSTALLINE PHASE | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | MICROSTRUCTURAL EVOLUTION | - |
dc.subject.keywordPlus | GRAIN-SIZE | - |
dc.subject.keywordPlus | DEFORMATION | - |
dc.subject.keywordPlus | EXTRUSION | - |
dc.subject.keywordPlus | TEXTURE | - |
dc.subject.keywordPlus | SUPERPLASTICITY | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | REFINEMENT | - |
dc.subject.keywordAuthor | Mechanical characterization | - |
dc.subject.keywordAuthor | Magnesium alloys | - |
dc.subject.keywordAuthor | Thermomechanical processing | - |
dc.subject.keywordAuthor | Grain refinement | - |
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