Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Kim, C.W. | ko |
dc.contributor.author | Terner, M. | ko |
dc.contributor.author | Lee, J.H. | ko |
dc.contributor.author | Hong, H.U. | ko |
dc.contributor.author | Moon, J. | ko |
dc.contributor.author | Park, S.J. | ko |
dc.contributor.author | Jang, J.H. | ko |
dc.contributor.author | Lee, C.H. | ko |
dc.contributor.author | Lee, B.H. | ko |
dc.contributor.author | Lee, Y.J. | ko |
dc.date.accessioned | 2018-11-20T02:12:39Z | - |
dc.date.available | 2018-11-20T02:12:39Z | - |
dc.date.created | 2018-11-02 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.citation | Journal of Alloys and Compounds, v.775, pp.554 - 564 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9408 | - |
dc.description.abstract | The effect of Si addition on the initial deformation mechanism of Fe–30Mn–9Al–0.9C–0.5Mo cast lightweight steel has been investigated. Atomic-scale analysis by three-dimensional atom-probe tomography confirmed that Si addition accelerates the formation kinetics of the κ-carbide, and increases remarkably the partitioning coefficient of carbon by more than 2 times. Promotion of C partitioning into κ-carbides by Si addition leads to deformation localization in an aged state. This is attributed not only to the increase of the κ-carbide size associated with higher coherency strain, but also to higher frequency of Al-C bonding formation. First-principles calculations indicated that the energy required for a/2<110> shearing of κ-carbide in the aged 1%-Si steel is higher (561 mJ/m2) than that in the aged Si-free steel (494 mJ/m2). Therefore, Si addition leads to a significant energy difference for shearing and results in different shear bands formation. The operative deformation mechanism can be calculated for this alloy system as a function of precipitates volume fraction and size. It was determined that deformation proceeds primarily by κ-carbide shearing as long as the radius of κ-carbides is smaller than 13.4 nm. © 2018 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier Ltd | - |
dc.subject | Atom probe tomography (APT) | - |
dc.subject | Dislocations | - |
dc.subject | First-principles calculations | - |
dc.subject | Metals and alloys | - |
dc.subject | Precipitation | - |
dc.title | Partitioning of C into κ-carbides by Si addition and its effect on the initial deformation mechanism of Fe-Mn-Al-C lightweight steels | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jallcom.2018.10.104 | - |
dc.identifier.wosid | 000450981100068 | - |
dc.identifier.scopusid | 2-s2.0-85055122018 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.contributor.nonIdAuthor | Kim, C.W. | - |
dc.contributor.nonIdAuthor | Terner, M. | - |
dc.contributor.nonIdAuthor | Lee, J.H. | - |
dc.contributor.nonIdAuthor | Hong, H.U. | - |
dc.contributor.nonIdAuthor | Moon, J. | - |
dc.contributor.nonIdAuthor | Park, S.J. | - |
dc.contributor.nonIdAuthor | Jang, J.H. | - |
dc.contributor.nonIdAuthor | Lee, C.H. | - |
dc.contributor.nonIdAuthor | Lee, Y.J. | - |
dc.identifier.citationVolume | 775 | - |
dc.identifier.citationStartPage | 554 | - |
dc.identifier.citationEndPage | 564 | - |
dc.identifier.citationTitle | Journal of Alloys and Compounds | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
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