In situ investigation of the bainitic transformation from deformed austenite during continuous cooling in a low carbon Mn-Si-Cr-Mo steel

Detalhes bibliográficos
Autor(a) principal: Bevilaqua, William Lemos
Data de Publicação: 2020
Outros Autores: Epp, Jérémy, Meyer, Heiner, Rocha, Alexandre da Silva, Roelofs, Hans
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.
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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
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dc.identifier.issn.pt_BR.fl_str_mv 1073-5623
dc.identifier.nrb.pt_BR.fl_str_mv 001118069
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dc.language.iso.fl_str_mv eng
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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
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