Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/10835 |
Resumo: | The superficial coatings in micro-alloyed steel pipes has been a pointed way to decrease the corrosion problems in oil and gas industry. However, little emphasis has been given to the substrate. The effects of the deposition method on the steel microstructure and properties are still not well described. In this context, this work studied the effect of Ni superalloys clads on the phase transformations, microstructure and hardness of the heat-affected zone (HAZ) of an API steel. The underestimate of the HAZ might be dangerous, since, despite the coating good corrosion performance, the substrate HAZ may present a weak region, which may lead to an in-service coating tearing. In this work, Inconel 625 and Hastelloy C276 superalloys were clad on the steel surface by a laser deposition. Dilatometry, optical and scanning electron microscopy, and computational simulation were applied. The studied steel was originally constituted by tempered martensite. The austentizing temperature had a strong influence on the austenite grain size and on the steel CCT diagram. Due to that, the laser superalloy deposits promoted a complex HAZ, where grain growth occurred. A post-cladding heat treatment was proposed to homogenize the steel microstructure and to decrease the hardness gradient at the superalloy-steel interface. |
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Faria, Geraldo Lúcio dePaula, Jorge Magalhães Ávila deLima, Milton Sérgio Fernandes de2019-03-27T14:20:12Z2019-03-27T14:20:12Z2018FARIA, G. L. de.; PAULA, J. M. A. de.; LIMA, M. S. F. de. Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. Materials Research, v. 21, p. 1-9, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392018000500222&lng=en&nrm=iso>. Acesso em: 13 fev. 2019.15161439http://www.repositorio.ufop.br/handle/123456789/10835The superficial coatings in micro-alloyed steel pipes has been a pointed way to decrease the corrosion problems in oil and gas industry. However, little emphasis has been given to the substrate. The effects of the deposition method on the steel microstructure and properties are still not well described. In this context, this work studied the effect of Ni superalloys clads on the phase transformations, microstructure and hardness of the heat-affected zone (HAZ) of an API steel. The underestimate of the HAZ might be dangerous, since, despite the coating good corrosion performance, the substrate HAZ may present a weak region, which may lead to an in-service coating tearing. In this work, Inconel 625 and Hastelloy C276 superalloys were clad on the steel surface by a laser deposition. Dilatometry, optical and scanning electron microscopy, and computational simulation were applied. The studied steel was originally constituted by tempered martensite. The austentizing temperature had a strong influence on the austenite grain size and on the steel CCT diagram. Due to that, the laser superalloy deposits promoted a complex HAZ, where grain growth occurred. A post-cladding heat treatment was proposed to homogenize the steel microstructure and to decrease the hardness gradient at the superalloy-steel interface.O periódico Materials Research dá permissão ao RI/UFOP para depositar uma cópia eletrônica dos artigos publicados por esse periódico em que ao menos um dos autores é aluno ou professor da UFOP. Contato via email em 25 out. 2013.info:eu-repo/semantics/openAccessHeat-affected zonePost-cladding heat treatmentCharacterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleporreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/10835/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_CharacterizationPhaseTransformations.pdfARTIGO_CharacterizationPhaseTransformations.pdfapplication/pdf6341257http://www.repositorio.ufop.br/bitstream/123456789/10835/1/ARTIGO_CharacterizationPhaseTransformations.pdfe1ee5d0ab093ff84b311f0789fcfafacMD51123456789/108352019-03-27 10:21:02.96oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-03-27T14:21:02Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
title |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
spellingShingle |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. Faria, Geraldo Lúcio de Heat-affected zone Post-cladding heat treatment |
title_short |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
title_full |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
title_fullStr |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
title_full_unstemmed |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
title_sort |
Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. |
author |
Faria, Geraldo Lúcio de |
author_facet |
Faria, Geraldo Lúcio de Paula, Jorge Magalhães Ávila de Lima, Milton Sérgio Fernandes de |
author_role |
author |
author2 |
Paula, Jorge Magalhães Ávila de Lima, Milton Sérgio Fernandes de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Faria, Geraldo Lúcio de Paula, Jorge Magalhães Ávila de Lima, Milton Sérgio Fernandes de |
dc.subject.por.fl_str_mv |
Heat-affected zone Post-cladding heat treatment |
topic |
Heat-affected zone Post-cladding heat treatment |
description |
The superficial coatings in micro-alloyed steel pipes has been a pointed way to decrease the corrosion problems in oil and gas industry. However, little emphasis has been given to the substrate. The effects of the deposition method on the steel microstructure and properties are still not well described. In this context, this work studied the effect of Ni superalloys clads on the phase transformations, microstructure and hardness of the heat-affected zone (HAZ) of an API steel. The underestimate of the HAZ might be dangerous, since, despite the coating good corrosion performance, the substrate HAZ may present a weak region, which may lead to an in-service coating tearing. In this work, Inconel 625 and Hastelloy C276 superalloys were clad on the steel surface by a laser deposition. Dilatometry, optical and scanning electron microscopy, and computational simulation were applied. The studied steel was originally constituted by tempered martensite. The austentizing temperature had a strong influence on the austenite grain size and on the steel CCT diagram. Due to that, the laser superalloy deposits promoted a complex HAZ, where grain growth occurred. A post-cladding heat treatment was proposed to homogenize the steel microstructure and to decrease the hardness gradient at the superalloy-steel interface. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018 |
dc.date.accessioned.fl_str_mv |
2019-03-27T14:20:12Z |
dc.date.available.fl_str_mv |
2019-03-27T14:20:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FARIA, G. L. de.; PAULA, J. M. A. de.; LIMA, M. S. F. de. Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. Materials Research, v. 21, p. 1-9, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392018000500222&lng=en&nrm=iso>. Acesso em: 13 fev. 2019. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/10835 |
dc.identifier.issn.none.fl_str_mv |
15161439 |
identifier_str_mv |
FARIA, G. L. de.; PAULA, J. M. A. de.; LIMA, M. S. F. de. Characterization of phase transformations and microstructural changes in an API 5CT L80 steel grade during ni alloy laser cladding. Materials Research, v. 21, p. 1-9, 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392018000500222&lng=en&nrm=iso>. Acesso em: 13 fev. 2019. 15161439 |
url |
http://www.repositorio.ufop.br/handle/123456789/10835 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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