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Superior Strength and Multiple Strengthening Mechanisms in Nanocrystalline TWIP Steel

Scientific reports, 2018-07, Vol.8 (1), p.11200-10, Article 11200 [Peer Reviewed Journal]

2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2018 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-018-29632-y ;PMID: 30046047

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  • Title:
    Superior Strength and Multiple Strengthening Mechanisms in Nanocrystalline TWIP Steel
  • Author: Kim, Jung Gi ; Enikeev, Nariman A ; Seol, Jae Bok ; Abramova, Marina M ; Karavaeva, Marina V ; Valiev, Ruslan Z ; Park, Chan Gyung ; Kim, Hyoung Seop
  • Subjects: Dislocation ; High temperature ; Nanostructured materials ; Steel
  • Is Part Of: Scientific reports, 2018-07, Vol.8 (1), p.11200-10, Article 11200
  • Description: The strengthening mechanism of the metallic material is related to the hindrance of the dislocation motion, and it is possible to achieve superior strength by maximizing these obstacles. In this study, the multiple strengthening mechanism-based nanostructured steel with high density of defects was fabricated using high-pressure torsion at room and elevated temperatures. By combining multiple strengthening mechanisms, we enhanced the strength of Fe-15 Mn-0.6C-1.5 Al steel to 2.6 GPa. We have found that solute segregation at grain boundaries achieves nanograined and nanotwinned structures with higher strength than the segregation-free counterparts. The importance of the use of multiple deformation mechanism suggests the development of a wide range of strong nanotwinned and nanostructured materials via severe plastic deformation process.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-018-29632-y
    PMID: 30046047
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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