There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.startPage | 164523 | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 907 | - |
dc.contributor.author | Park, Geon-Woo | - |
dc.contributor.author | Shin, Sunmi | - |
dc.contributor.author | Kim, Jin-Young | - |
dc.contributor.author | Koo, Yong-Mo | - |
dc.contributor.author | Lee, Wookjin | - |
dc.contributor.author | Lee, Kee-Ahn | - |
dc.contributor.author | Park, Sung Soo | - |
dc.contributor.author | Jeon, Jong Bae | - |
dc.date.accessioned | 2023-12-21T14:08:15Z | - |
dc.date.available | 2023-12-21T14:08:15Z | - |
dc.date.created | 2022-06-30 | - |
dc.date.issued | 2022-06 | - |
dc.description.abstract | This study investigated the microstructure and cracking mechanism of a matrix high-speed steel fabricated by direct energy deposition. The combined effect of rapid solidification and chemical composition on microstructure and cracking mechanism during deposition were investigated. Excessive solute segregation into inter-dendritic regions due to rapid solidification caused formation of retained austenite in the interdendritic region and formation of alpha'-martensite in the dendritic region. The excess solute segregation decreased equilibrium solidification temperature and caused formation of low-melting eutectic carbides in the inter-dendritic region. These carbides increased hot-cracking susceptibility, and caused solidification cracking and liquation cracking in the inter-dendritic region. In contrast, tensile residual stress in deposited layers may have caused cold cracking in alpha'-martensite near the hot crack tips. Cold cracks contributed to growth of macroscopic longitudinal cracks throughout the specimen by bridging the hot cracks formed during solidification or reheating.(c) 2022 Elsevier B.V. All rights reserved. | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.907, pp.164523 | - |
dc.identifier.doi | 10.1016/j.jallcom.2022.164523 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.scopusid | 2-s2.0-85126430043 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/58991 | - |
dc.identifier.wosid | 000806568800004 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Analysis of solidification microstructure and cracking mechanism of a matrix high-speed steel deposited using directed-energy deposition | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering | - |
dc.relation.journalResearchArea | Chemistry; Materials Science; Metallurgy & Metallurgical Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Additive manufacturing | - |
dc.subject.keywordAuthor | Crack formation mechanism | - |
dc.subject.keywordAuthor | Directed energy deposition | - |
dc.subject.keywordAuthor | Matrix high-speed steel | - |
dc.subject.keywordAuthor | Microstructure | - |
dc.subject.keywordPlus | CYCLE FATIGUE BEHAVIOR | - |
dc.subject.keywordPlus | RESIDUAL-STRESS | - |
dc.subject.keywordPlus | WEAR BEHAVIOR | - |
dc.subject.keywordPlus | TOOL STEEL | - |
dc.subject.keywordPlus | RETAINED AUSTENITE | - |
dc.subject.keywordPlus | IMPACT TOUGHNESS | - |
dc.subject.keywordPlus | HEAT-TREATMENT | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | CARBIDES | - |
dc.subject.keywordPlus | CARBON | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.