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  Crystallographic examination of the interaction between texture evolution, mechanically induced martensitic transformation and twinning in nanostructured bainite

Morales-Rivas, L., Archie, F. M. F., Zaefferer, S., Benito-Alfonso, M., Tsai, S. P., Yang, J. R., et al. (2018). Crystallographic examination of the interaction between texture evolution, mechanically induced martensitic transformation and twinning in nanostructured bainite. Journal of Alloys and Compounds, 752, 505-519. doi:10.1016/j.jallcom.2018.04.189.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-E5D4-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E5D5-C
Genre: Journal Article

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 Creators:
Morales-Rivas, Lucia1, Author              
Archie, Fady Mamdouh Fawzy2, Author              
Zaefferer, Stefan3, Author              
Benito-Alfonso, Miguel4, Author              
Tsai, Shao Pu5, Author              
Yang, Jer Ren5, Author              
Raabe, Dierk2, Author              
Garcia-Mateo, Carlos6, Author              
Caballero, Francisca G.6, Author              
Affiliations:
1Technische Universität Kaiserslautern (TUK), Materials Testing, Gottlieb-Daimler-Str., Kaiserslautern, Germany, persistent22              
2Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
3Microscopy and Diffraction, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863391              
4Department of Physical Metallurgy, National Centre for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, Madrid, Spain, persistent22              
5Department of Materials Science and Engineering, National Taiwan University, 1, Roosevelt Rd. Sec. 4, Taipei, Taiwan, persistent22              
6Department of Physical Metallurgy, National Centre for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, E-28040 Madrid, Spain, persistent22              

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Free keywords: Austenite; Bainite; Deformation; High resolution transmission electron microscopy; Martensite; Martensitic transformations; Nanocrystals; Strain hardening; Tensile testing; Transmission electron microscopy, EBSD; ECCI; Nanostructured bainites; TRIP; TWIP, Bainitic transformations
 Abstract: The deformation mechanisms operating in nanostructured bainite, leading to its excellent combination of strength and ductility, are far from being understood. Its nanocrystalline nature and its multiphase-evolving structure underlie the plastic flow and the strain-hardening behaviour. In this work, the microstructural and crystallographic bulk changes of a high-C nanostructured bainite under tensile testing have been evaluated. The influence of the mechanically-induced transformation of the C-enriched retained austenite into α martensite and other deformation mechanisms on the texture evolution has been analysed by electron backscatter diffraction (EBSD). Additionally, the undeformed and the deformed conditions have been examined by electron channelling contrast imaging (ECCI) and transmission electron microscopy (TEM). Results reveal the presence of plate martensite and suggest a strong variant selection during the transformation, mainly responsible for the texture observed. Mechanical twinning in austenite seems to be basically the mechanism of accommodation of the displacive bainitic transformation, while some direct interaction with the applied stress also appears. © 2018

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Language(s): eng - English
 Dates: 2018-07-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.jallcom.2018.04.189
BibTex Citekey: Morales-Rivas2018505
 Degree: -

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Title: Journal of Alloys and Compounds
  Abbreviation : J. Alloy. Comp.
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier B.V.
Pages: - Volume / Issue: 752 Sequence Number: - Start / End Page: 505 - 519 Identifier: ISSN: 0925-8388
CoNE: /journals/resource/954925567746