Relationship between grain size and ductile-to-brittle transition at room temperature in Fe–18Mn–0.6C–1.5Si twinning-induced plasticity steel
DC Field | Value | Language |
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dc.contributor.author | Jo, Seo Yeon | - |
dc.contributor.author | Han, Jeongho | - |
dc.contributor.author | Kang, Joo-Hee | - |
dc.contributor.author | Kang, Singon | - |
dc.contributor.author | Lee, Sukjin | - |
dc.contributor.author | Lee, Young-Kook | - |
dc.date.accessioned | 2022-07-15T23:19:19Z | - |
dc.date.available | 2022-07-15T23:19:19Z | - |
dc.date.created | 2021-05-13 | - |
dc.date.issued | 2015-04 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/157470 | - |
dc.description.abstract | The effect of grain size on tensile properties, particularly elongation (El), was systematically investigated using cold-rolled and annealed Fe-18Mn-0.6C-1.5Si (wt.%) twinning-induced plasticity (TWIP) steels. Whereas both the yield (YS) and ultimate tensile strengths (UTS) decreased with grain coarsening, the El increased up to a grain size of approximately 18 mu m, and then sharply decreased beyond the critical grain size. This unusual reduction in El in coarse-grained specimens was caused by the transition of the fracture mode from ductile to brittle. The transition in fracture stemmed from a change in the deformation mechanism from mechanical twinning to strain-induced epsilon-martensitic transformation. The epsilon plates provided nucleation sites and propagation paths for cracks, causing quasi-cleavage brittle fracture in coarse-grained specimens. The cracks growing along the {10 (1) over bar0} or (0001) plane were bent by epsilon plates with different plane orientations and were blocked by gamma-austenite plates. When the local stress in the gamma plate near the crack tip was high, new epsilon-martensitic plates formed within the gamma plate, enabling the crack to pass through the c plate, and changed the crack path. The quasi-cleavage fractured surface consisted of (10 (1) over bar1), (10 (1) over bar2), and (2 (1) over bar(1) over bar1) planes. Ridges of bamboo-like structures observed on the fractured surface formed by the variation in crack path occurring at the epsilon plates with different orientations. The Si-added TWIP steel exhibited a superior combination of UTS and El of more than 70,000 MPa %. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Relationship between grain size and ductile-to-brittle transition at room temperature in Fe–18Mn–0.6C–1.5Si twinning-induced plasticity steel | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Han, Jeongho | - |
dc.identifier.doi | 10.1016/j.jallcom.2014.11.232 | - |
dc.identifier.scopusid | 2-s2.0-84920742424 | - |
dc.identifier.wosid | 000348504800053 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.627, pp.374 - 382 | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 627 | - |
dc.citation.startPage | 374 | - |
dc.citation.endPage | 382 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | C TWIP STEEL | - |
dc.subject.keywordPlus | TENSILE DEFORMATION-BEHAVIOR | - |
dc.subject.keywordPlus | EPSILON-MARTENSITIC TRANSFORMATION | - |
dc.subject.keywordPlus | MANGANESE AUSTENITIC STEEL | - |
dc.subject.keywordPlus | STACKING-FAULT ENERGY | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | AL | - |
dc.subject.keywordPlus | BOUNDARIES | - |
dc.subject.keywordPlus | FRACTURE | - |
dc.subject.keywordAuthor | Elasticity | - |
dc.subject.keywordAuthor | Metals and alloys | - |
dc.subject.keywordAuthor | Mechanical properties | - |
dc.subject.keywordAuthor | Microstructure | - |
dc.subject.keywordAuthor | Phase transitions | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0925838814030485?via%3Dihub | - |
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