Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김진경 | - |
dc.date.accessioned | 2023-12-21T05:34:01Z | - |
dc.date.available | 2023-12-21T05:34:01Z | - |
dc.date.issued | 2023-11 | - |
dc.identifier.citation | Journal of Materials Research and Technology, v. 27, Page. 894.0-904.0 | - |
dc.identifier.issn | 2238-7854;2214-0697 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S2238785423024183 | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/187590 | - |
dc.description.abstract | This study reports the partitioning temperature-dependent microstructures and mechanical properties of precipitation-hardened medium Mn steel processed by room-temperature quenching and partitioning. The hot-rolled Fe–7Mn-0.3C–3Ni-1.5Si–1Al–1Cu-0.3V (wt.%) steel was processed by austenitization, water quenching to room-temperature, and partitioning treatment at 200, 300, 400, and 500 °C for 600 s. The samples before and after the partitioning process at temperatures below 400 °C show a microstructure consisting of lath martensite and retained austenite, whereas the sample partitioned at 500 °C shows a notably high fraction of retained austenite, owing to the formation of austenite grains during the partitioning process. The C partitioning during the partitioning process led to higher C contents in the samples processed by austenitization, quenching, and partitioning than in the sample processed by austenitization and quenching. The co-precipitation of VC precipitates and dispersed fine particles could exhibit a precipitation-strengthening effect. The sample partitioned at 200 °C shows an excellent strength-ductility combination, i.e., a yield strength of 740.9 MPa, an ultimate tensile strength of 1623.6 MPa, and a total elongation of 23.8%. Film-like retained austenite stabilized by carbon partitioning could exhibit high mechanical stability, leading to a gradual transformation induced plasticity (TRIP) effect and superior mechanical properties. In contrast, the samples partitioned at temperatures above 400 °C show poor ductility with brittle fracture, which could be related to the formation of martensite/retained austenite (M/A) constituents. © 2023 The Authors | - |
dc.description.sponsorship | POSCO TJ Park Foundation; Ministry of Trade, Industry and Energy, MOTIE, (P0002019); Korea Institute for Advancement of Technology, KIAT | - |
dc.language | en | - |
dc.publisher | Elsevier Editora Ltda | - |
dc.subject | Medium Mn steel | - |
dc.subject | Precipitation | - |
dc.subject | Room-temperature quenching and partitioning | - |
dc.subject | TRIP effect | - |
dc.title | Partitioning temperature-dependent microstructures and mechanical properties of precipitation-hardened medium-Mn steel | - |
dc.type | Article | - |
dc.relation.volume | 27 | - |
dc.identifier.doi | 10.1016/j.jmrt.2023.09.292 | - |
dc.relation.page | 894.0-904.0 | - |
dc.relation.journal | Journal of Materials Research and Technology | - |
dc.contributor.googleauthor | You, Donggyun | - |
dc.contributor.googleauthor | Kim, Jin-Kyung | - |
dc.sector.campus | E | - |
dc.sector.daehak | 공학대학 | - |
dc.sector.department | 재료화학공학과 | - |
dc.identifier.pid | jinkyungkim | - |
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