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  Microstructural analysis in the Fe-30.5Mn-8.0Al-1.2C and Fe-30.5Mn-2.1Al-1.2C steels upon cold rolling

Souza, F. M., Padilha, A. F., Gutiérrez-Urrutia, I., & Raabe, D. (2016). Microstructural analysis in the Fe-30.5Mn-8.0Al-1.2C and Fe-30.5Mn-2.1Al-1.2C steels upon cold rolling. Revista Escola de Minas, 69(2), 167-173. doi:10.1590/0370-44672015690097.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-B880-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-B881-D
Genre: Journal Article

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 Creators:
Souza, Fabrício Mendes1, Author              
Padilha, Angelo Fernando2, Author              
Gutiérrez-Urrutia, Ivan3, Author              
Raabe, Dierk4, Author              
Affiliations:
1Secretaria de Estado de Educação de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, persistent22              
2Universidade de São Paulo – USP, Escola Politécnica, Departamento de Engenharia Metalúrgica e de Materiais, São Paulo, São Paulo, Brazil, persistent22              
3Research Center for Strategic Materials, National Institute for Materials Science, 1-2-1 SengenTsukuba-city, Ibaraki, Japan, ou_persistent22              
4Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              

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Free keywords: backscatter; imaging method; iron; manganese; mechanical property; microstructure; steel
 Abstract: Electron backscatter diffraction (EBSD) and electron channeling contrast imaging (ECCI) were used to examine microstructural changes of the austenitic low-density Fe-30.5Mn-8.0Al-1.2C (8Al) and Fe-30.5Mn-2.1Al-1.2C (2Al) (wt.) steels during cold rolling. As the strain increased, deformation mechanisms, such as stacking faults, slip, mechanical twinning, and shear banding were activated in both steels cold rolled up to strain of 0.69. Only slip was noted in these steels at low strain (ε=0.11) and slip dominance was detected in the 8Al steel at higher strains. Shear banding became active at higher strain (ε~0.7) in these materials. An inhomogeneous microstructure formed in both alloys at such strain level. More extensive mechanical twinning in the 2Al alloy than that in the 8Al alloy was observed. Fish bone-like structure patterns were revealed in the 8Al steel and a river-like structure in the 2Al steel. Detailed microstructure features as elongated and fragmented grains along the rolling direction (RD) were found for both steels, as already observed in other high-Mn steels. These deformed structures are composed by lamellar packets which can contain mechanical twins or slip lines and shear bands. © 2016, Escola de Minas. All rights reserved.

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Language(s): eng - English
 Dates: 2016-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1590/0370-44672015690097
BibTex Citekey: Souza2016167
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Title: Revista Escola de Minas
Source Genre: Journal
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Publ. Info: Escola de Minas
Pages: - Volume / Issue: 69 (2) Sequence Number: - Start / End Page: 167 - 173 Identifier: ISSN: 03704467
CoNE: /journals/resource/03704467