Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process

An experimental austenitic twin-induced plasticity (TWIP) steel was deformed under hot torsion tests. Two different total equivalent strains (2.2 and 2.6) were employed in order to raise its yield strength while keeping reasonable toughness. The material was isothermally strained at 900 °C with a lo...

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Authors: Lima, Marcos Natan da Silva|||0000-0001-6530-4898, França Schmalz,, Guilherme Luis, Loureiro Paes, Rodrigo de Carvalho, Ferreira, João Carlos, Rodrigues, Samuel Filgueiras, Calvo Muñoz, Jessica|||0000-0002-5786-207X, Cabrera Marrero, José M.|||0000-0001-8417-1736, Ferreira Gomes de abreu, Hamilton
Format: article
Publication Date:2023
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/389709
Online Access:https://hdl.handle.net/2117/389709
https://dx.doi.org/10.1016/j.msea.2023.145206
Access Level:Open access
Keyword:Materials--Mechanical properties
Materials--Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
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spelling Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion processLima, Marcos Natan da Silva|||0000-0001-6530-4898França Schmalz,, Guilherme LuisLoureiro Paes, Rodrigo de CarvalhoFerreira, João CarlosRodrigues, Samuel FilgueirasCalvo Muñoz, Jessica|||0000-0002-5786-207XCabrera Marrero, José M.|||0000-0001-8417-1736Ferreira Gomes de abreu, HamiltonMaterials--Mechanical propertiesMaterials--Propietats mecàniquesÀrees temàtiques de la UPC::Enginyeria dels materialsAn experimental austenitic twin-induced plasticity (TWIP) steel was deformed under hot torsion tests. Two different total equivalent strains (2.2 and 2.6) were employed in order to raise its yield strength while keeping reasonable toughness. The material was isothermally strained at 900 °C with a low strain rate of 0.05 s-1. The effects of torsional deformation on the microstructure, texture and mechanical properties of the TWIP steel were investigated and compared with the as-received samples. X-Ray Diffraction (XRD) measurements were performed to identify the phases present in the metal before and after the thermomechanical process. Scanning electron microscopy (SEM), Electron backscatter diffraction (EBSD), Orientation distribution function (ODF) analysis and tensile experiments complemented the investigation of this research. The main deformation mechanism changed from conventional sliding inside the grain to nucleated twinning from the grain boundaries, which led to the decrease of the grain size to less than 1 µm (UFG - Ultrafine Grains). The results indicate that the transition in the deformation mechanisms is dependent on grain size associated with the flow profile of the material. This was due to changes in the dislocation density within the grain and the movement of dislocations around the yield point. No martensitic transformation was detected during the strain and neither from the twinning mechanism in the microstructure after the torsion deformation. The best balance between high strength and good ductility (920 MPa and 52%) was obtained after the total equivalent strain of 2.6. It was verified that the employed thermomechanical schedule affects the displacement of the substructure with the formation of sub-grains influencing the hardening behavior, texture and yield strength of the metal.Peer ReviewedElsevier20232023-06-2220232023-06-23journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/389709https://dx.doi.org/10.1016/j.msea.2023.145206reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3897092026-05-27T15:37:01Z
dc.title.none.fl_str_mv Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
title Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
spellingShingle Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
Lima, Marcos Natan da Silva|||0000-0001-6530-4898
Materials--Mechanical properties
Materials--Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
title_short Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
title_full Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
title_fullStr Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
title_full_unstemmed Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
title_sort Microstructure, properties and crystallographic orientation of novel austenitic Fe–26Mn-3.4Cr-0.4C steel under hot torsion process
dc.creator.none.fl_str_mv Lima, Marcos Natan da Silva|||0000-0001-6530-4898
França Schmalz,, Guilherme Luis
Loureiro Paes, Rodrigo de Carvalho
Ferreira, João Carlos
Rodrigues, Samuel Filgueiras
Calvo Muñoz, Jessica|||0000-0002-5786-207X
Cabrera Marrero, José M.|||0000-0001-8417-1736
Ferreira Gomes de abreu, Hamilton
author Lima, Marcos Natan da Silva|||0000-0001-6530-4898
author_facet Lima, Marcos Natan da Silva|||0000-0001-6530-4898
França Schmalz,, Guilherme Luis
Loureiro Paes, Rodrigo de Carvalho
Ferreira, João Carlos
Rodrigues, Samuel Filgueiras
Calvo Muñoz, Jessica|||0000-0002-5786-207X
Cabrera Marrero, José M.|||0000-0001-8417-1736
Ferreira Gomes de abreu, Hamilton
author_role author
author2 França Schmalz,, Guilherme Luis
Loureiro Paes, Rodrigo de Carvalho
Ferreira, João Carlos
Rodrigues, Samuel Filgueiras
Calvo Muñoz, Jessica|||0000-0002-5786-207X
Cabrera Marrero, José M.|||0000-0001-8417-1736
Ferreira Gomes de abreu, Hamilton
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Materials--Mechanical properties
Materials--Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
topic Materials--Mechanical properties
Materials--Propietats mecàniques
Àrees temàtiques de la UPC::Enginyeria dels materials
description An experimental austenitic twin-induced plasticity (TWIP) steel was deformed under hot torsion tests. Two different total equivalent strains (2.2 and 2.6) were employed in order to raise its yield strength while keeping reasonable toughness. The material was isothermally strained at 900 °C with a low strain rate of 0.05 s-1. The effects of torsional deformation on the microstructure, texture and mechanical properties of the TWIP steel were investigated and compared with the as-received samples. X-Ray Diffraction (XRD) measurements were performed to identify the phases present in the metal before and after the thermomechanical process. Scanning electron microscopy (SEM), Electron backscatter diffraction (EBSD), Orientation distribution function (ODF) analysis and tensile experiments complemented the investigation of this research. The main deformation mechanism changed from conventional sliding inside the grain to nucleated twinning from the grain boundaries, which led to the decrease of the grain size to less than 1 µm (UFG - Ultrafine Grains). The results indicate that the transition in the deformation mechanisms is dependent on grain size associated with the flow profile of the material. This was due to changes in the dislocation density within the grain and the movement of dislocations around the yield point. No martensitic transformation was detected during the strain and neither from the twinning mechanism in the microstructure after the torsion deformation. The best balance between high strength and good ductility (920 MPa and 52%) was obtained after the total equivalent strain of 2.6. It was verified that the employed thermomechanical schedule affects the displacement of the substructure with the formation of sub-grains influencing the hardening behavior, texture and yield strength of the metal.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-06-22
2023
2023-06-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/389709
https://dx.doi.org/10.1016/j.msea.2023.145206
url https://hdl.handle.net/2117/389709
https://dx.doi.org/10.1016/j.msea.2023.145206
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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