Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy

Localised laser treatments enable the creation of sophisticated austenite/martensite mesostructures in Fe–Ni–C steel with the potential of achieving enhanced mechanical performance. The control of phase topology is essential to modify the properties of these structures on demand and requires a profo...

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Autores: Breukelman , Hubert, Hermans , Mjm, Santofimia , Maria Jesús, Hidalgo García, Javier
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/41218
Acesso em linha:https://hdl.handle.net/10578/41218
Access Level:acceso abierto
Palavra-chave:Austenite
Flash heating
Local heat treatment
Martensite
Patterned microstructure materials
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spelling Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloyBreukelman , HubertHermans , MjmSantofimia , Maria JesúsHidalgo García, JavierAusteniteFlash heatingLocal heat treatmentMartensitePatterned microstructure materialsLocalised laser treatments enable the creation of sophisticated austenite/martensite mesostructures in Fe–Ni–C steel with the potential of achieving enhanced mechanical performance. The control of phase topology is essential to modify the properties of these structures on demand and requires a profound understanding of the effect of the processing parameters on the development of the different phases upon the application of laser treatment. In this work, the microstructure evolution under exceptional gradients in temperature and heating rates is thoroughly investigated. The extent of the laser-affected zone and the heat input were tailored by varying laser parameters and specimen thickness, based on a model that considers transient material properties and the coupling between temperature and microstructure. The predicted temperature fields resulted in a complex interplay between martensite to austenite phase transformation and martensite tempering. Considering the high heating rates of up to 25000 K/s and the observed microstructures, it is suggested that austenite was formed by a pseudo-displacive mechanism and subsequently fully recrystallised in the zones most directly affected by the laser heat source. A smooth strength transition from austenite to martensite, affected by the laser parameters, could be exploited for more effective deformation mechanisms and improved material mechanical properties.Localised laser treatments enable the creation of sophisticated austenite/martensite mesostructures in Fe–Ni–C steel with the potential of achieving enhanced mechanical performance. The control of phase topology is essential to modify the properties of these structures on demand and requires a profound understanding of the effect of the processing parameters on the development of the different phases upon the application of laser treatment. In this work, the microstructure evolution under exceptional gradients in temperature and heating rates is thoroughly investigated. The extent of the laser-affected zone and the heat input were tailored by varying laser parameters and specimen thickness, based on a model that considers transient material properties and the coupling between temperature and microstructure. The predicted temperature fields resulted in a complex interplay between martensite to austenite phase transformation and martensite tempering. Considering the high heating rates of up to 25000 K/s and the observed microstructures, it is suggested that austenite was formed by a pseudo-displacive mechanism and subsequently fully recrystallised in the zones most directly affected by the laser heat source. A smooth strength transition from austenite to martensite, affected by the laser parameters, could be exploited for more effective deformation mechanisms and improved material mechanical properties.Elsevier202520252023info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/10578/41218reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/412182026-05-27T07:36:41Z
dc.title.none.fl_str_mv Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
title Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
spellingShingle Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
Breukelman , Hubert
Austenite
Flash heating
Local heat treatment
Martensite
Patterned microstructure materials
title_short Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
title_full Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
title_fullStr Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
title_full_unstemmed Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
title_sort Engineering austenite/martensite mesostructured materials by controlled localised laser treatments in a Fe–Ni–C alloy
dc.creator.none.fl_str_mv Breukelman , Hubert
Hermans , Mjm
Santofimia , Maria Jesús
Hidalgo García, Javier
author Breukelman , Hubert
author_facet Breukelman , Hubert
Hermans , Mjm
Santofimia , Maria Jesús
Hidalgo García, Javier
author_role author
author2 Hermans , Mjm
Santofimia , Maria Jesús
Hidalgo García, Javier
author2_role author
author
author
dc.subject.none.fl_str_mv Austenite
Flash heating
Local heat treatment
Martensite
Patterned microstructure materials
topic Austenite
Flash heating
Local heat treatment
Martensite
Patterned microstructure materials
description Localised laser treatments enable the creation of sophisticated austenite/martensite mesostructures in Fe–Ni–C steel with the potential of achieving enhanced mechanical performance. The control of phase topology is essential to modify the properties of these structures on demand and requires a profound understanding of the effect of the processing parameters on the development of the different phases upon the application of laser treatment. In this work, the microstructure evolution under exceptional gradients in temperature and heating rates is thoroughly investigated. The extent of the laser-affected zone and the heat input were tailored by varying laser parameters and specimen thickness, based on a model that considers transient material properties and the coupling between temperature and microstructure. The predicted temperature fields resulted in a complex interplay between martensite to austenite phase transformation and martensite tempering. Considering the high heating rates of up to 25000 K/s and the observed microstructures, it is suggested that austenite was formed by a pseudo-displacive mechanism and subsequently fully recrystallised in the zones most directly affected by the laser heat source. A smooth strength transition from austenite to martensite, affected by the laser parameters, could be exploited for more effective deformation mechanisms and improved material mechanical properties.
publishDate 2023
dc.date.none.fl_str_mv 2023
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10578/41218
url https://hdl.handle.net/10578/41218
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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