Superior Strength and Multiple Strengthening Mechanisms in Nanocrystalline TWIP Steel

Jung Gi Kim, Nariman A. Enikeev, Jae Bok Seol, Marina M. Abramova, Marina V. Karavaeva, Ruslan Z. Valiev, Chan Gyung Park, Hyoung Seop Kim

Результат исследований: Научные публикации в периодических изданияхстатья

758 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаанглийский
Номер статьи11200
Число страниц10
ЖурналScientific Reports
Том8
Номер выпуска1
DOI
СостояниеОпубликовано - 25 июл 2018

Предметные области Scopus

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