In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/216994 |
Resumo: | The effects of hot deformation on the bainitic transformation of a low carbon steel during continuous cooling were comprehensively studied through in situ high-energy synchrotron X-ray diffraction, dilatometry, and ex situ microstructural characterizations. The obtained results indicated that the prior deformation of austenite at 950 C accelerates the bainite formation at the early stages. During the ongoing of the transformation, both the overall kinetics of bainite and carbon enrichment of austenite are lower in deformed austenite. The bainitic microstructure developed from deformed austenite is more refined and presents the same retained austenite content at room temperature with slightly lower carbon content when compared with the undeformed sample. Besides, a significant higher dilatation strain was measured during the bainitic transformation in the deformed sample, which can be explained by the crystallographic texture in hot deformed austenite. The evolution of the peak broadening of the {220}c and {211}a reflections during bainitic transformation are discussed in detail. |
id |
UFRGS-2_411e9331f552e6b6e2bd896ca3ba9665 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/216994 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Bevilaqua, William LemosEpp, JérémyMeyer, HeinerRocha, Alexandre da SilvaRoelofs, Hans2020-12-31T04:13:16Z20201073-5623http://hdl.handle.net/10183/216994001118069The effects of hot deformation on the bainitic transformation of a low carbon steel during continuous cooling were comprehensively studied through in situ high-energy synchrotron X-ray diffraction, dilatometry, and ex situ microstructural characterizations. The obtained results indicated that the prior deformation of austenite at 950 C accelerates the bainite formation at the early stages. During the ongoing of the transformation, both the overall kinetics of bainite and carbon enrichment of austenite are lower in deformed austenite. The bainitic microstructure developed from deformed austenite is more refined and presents the same retained austenite content at room temperature with slightly lower carbon content when compared with the undeformed sample. Besides, a significant higher dilatation strain was measured during the bainitic transformation in the deformed sample, which can be explained by the crystallographic texture in hot deformed austenite. The evolution of the peak broadening of the {220}c and {211}a reflections during bainitic transformation are discussed in detail.application/pdfengMetallurgical and materials transactions a : physical metallurgy and materials science. [Warrendale]. Vol. 51, no. 7 (July 2020), p. 3627-3637Aço-carbonoResfriamentoIn situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steelEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001118069.pdf.txt001118069.pdf.txtExtracted Texttext/plain40235http://www.lume.ufrgs.br/bitstream/10183/216994/2/001118069.pdf.txtaddcc02e2ffb8515a0f787be7c35f0f4MD52ORIGINAL001118069.pdfTexto completo (inglês)application/pdf5231839http://www.lume.ufrgs.br/bitstream/10183/216994/1/001118069.pdf08027c4553a3021a63e8742fa5617616MD5110183/2169942021-03-09 04:33:43.748654oai:www.lume.ufrgs.br:10183/216994Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-03-09T07:33:43Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
title |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
spellingShingle |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel Bevilaqua, William Lemos Aço-carbono Resfriamento |
title_short |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
title_full |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
title_fullStr |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
title_full_unstemmed |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
title_sort |
In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel |
author |
Bevilaqua, William Lemos |
author_facet |
Bevilaqua, William Lemos Epp, Jérémy Meyer, Heiner Rocha, Alexandre da Silva Roelofs, Hans |
author_role |
author |
author2 |
Epp, Jérémy Meyer, Heiner Rocha, Alexandre da Silva Roelofs, Hans |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Bevilaqua, William Lemos Epp, Jérémy Meyer, Heiner Rocha, Alexandre da Silva Roelofs, Hans |
dc.subject.por.fl_str_mv |
Aço-carbono Resfriamento |
topic |
Aço-carbono Resfriamento |
description |
The effects of hot deformation on the bainitic transformation of a low carbon steel during continuous cooling were comprehensively studied through in situ high-energy synchrotron X-ray diffraction, dilatometry, and ex situ microstructural characterizations. The obtained results indicated that the prior deformation of austenite at 950 C accelerates the bainite formation at the early stages. During the ongoing of the transformation, both the overall kinetics of bainite and carbon enrichment of austenite are lower in deformed austenite. The bainitic microstructure developed from deformed austenite is more refined and presents the same retained austenite content at room temperature with slightly lower carbon content when compared with the undeformed sample. Besides, a significant higher dilatation strain was measured during the bainitic transformation in the deformed sample, which can be explained by the crystallographic texture in hot deformed austenite. The evolution of the peak broadening of the {220}c and {211}a reflections during bainitic transformation are discussed in detail. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-12-31T04:13:16Z |
dc.date.issued.fl_str_mv |
2020 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/216994 |
dc.identifier.issn.pt_BR.fl_str_mv |
1073-5623 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001118069 |
identifier_str_mv |
1073-5623 001118069 |
url |
http://hdl.handle.net/10183/216994 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Metallurgical and materials transactions a : physical metallurgy and materials science. [Warrendale]. Vol. 51, no. 7 (July 2020), p. 3627-3637 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/216994/2/001118069.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/216994/1/001118069.pdf |
bitstream.checksum.fl_str_mv |
addcc02e2ffb8515a0f787be7c35f0f4 08027c4553a3021a63e8742fa5617616 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1815447728965025792 |