Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution

Detalhes bibliográficos
Autor(a) principal: Hernández,José Wilmar Calderón
Data de Publicação: 2015
Outros Autores: Ladino,Duberney Hincapié, Azevedo,Cesar Roberto de Farias, Falleiros,Neusa Alonso
Tipo de documento: Artigo
Idioma: eng
Título da fonte: REM. Revista Escola de Minas (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000100091
Resumo: The effect of solution heat treatment on the pitting corrosion resistance of 17Cr-6Mn-5Ni-1.5Cu austenitic stainless steel in 0.6M NaCl aqueous solution was evaluated. UNS S30403 (304L) steel was used as benchmark material. Solution heat treatments (SHT) were conducted at 1010°C, 1040°C, 1070°C and 1100°C. The microstructural characterization revealed the presence of δ-ferrite, especially in the asreceived condition (AR). The SHT decreased the proportion of the ferrite phase. Mnrich precipitates were observed in the as-received condition of 17Cr-6Mn-5Ni-1.5Cu steel, but they were dissolved after the SHT, causing localized Mn enrichment in the austenite. Potentiodynamic tests showed that the pitting potential (Ep) in the 304L steel was not altered significantly after SHT. On the other hand, the value of Ep of the 17Cr-6Mn-5Ni-1.5Cu steel decreased after SHT. This detrimental effect was explained by the formation of Mn enrichment areas due to the solubilization of Mn-rich precipitates, which promoted preferential Cl- adsorption in these regions.
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spelling Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solutionpitting corrosionaustenitic stainless steel17Cr-6Mn-5Ni-1.5Cusodium chlorideThe effect of solution heat treatment on the pitting corrosion resistance of 17Cr-6Mn-5Ni-1.5Cu austenitic stainless steel in 0.6M NaCl aqueous solution was evaluated. UNS S30403 (304L) steel was used as benchmark material. Solution heat treatments (SHT) were conducted at 1010°C, 1040°C, 1070°C and 1100°C. The microstructural characterization revealed the presence of δ-ferrite, especially in the asreceived condition (AR). The SHT decreased the proportion of the ferrite phase. Mnrich precipitates were observed in the as-received condition of 17Cr-6Mn-5Ni-1.5Cu steel, but they were dissolved after the SHT, causing localized Mn enrichment in the austenite. Potentiodynamic tests showed that the pitting potential (Ep) in the 304L steel was not altered significantly after SHT. On the other hand, the value of Ep of the 17Cr-6Mn-5Ni-1.5Cu steel decreased after SHT. This detrimental effect was explained by the formation of Mn enrichment areas due to the solubilization of Mn-rich precipitates, which promoted preferential Cl- adsorption in these regions.Escola de Minas2015-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000100091Rem: Revista Escola de Minas v.68 n.1 2015reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/0370-44672015680002info:eu-repo/semantics/openAccessHernández,José Wilmar CalderónLadino,Duberney HincapiéAzevedo,Cesar Roberto de FariasFalleiros,Neusa Alonsoeng2015-10-09T00:00:00Zoai:scielo:S0370-44672015000100091Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2015-10-09T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse
dc.title.none.fl_str_mv Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
title Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
spellingShingle Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
Hernández,José Wilmar Calderón
pitting corrosion
austenitic stainless steel
17Cr-6Mn-5Ni-1.5Cu
sodium chloride
title_short Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
title_full Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
title_fullStr Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
title_full_unstemmed Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
title_sort Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
author Hernández,José Wilmar Calderón
author_facet Hernández,José Wilmar Calderón
Ladino,Duberney Hincapié
Azevedo,Cesar Roberto de Farias
Falleiros,Neusa Alonso
author_role author
author2 Ladino,Duberney Hincapié
Azevedo,Cesar Roberto de Farias
Falleiros,Neusa Alonso
author2_role author
author
author
dc.contributor.author.fl_str_mv Hernández,José Wilmar Calderón
Ladino,Duberney Hincapié
Azevedo,Cesar Roberto de Farias
Falleiros,Neusa Alonso
dc.subject.por.fl_str_mv pitting corrosion
austenitic stainless steel
17Cr-6Mn-5Ni-1.5Cu
sodium chloride
topic pitting corrosion
austenitic stainless steel
17Cr-6Mn-5Ni-1.5Cu
sodium chloride
description The effect of solution heat treatment on the pitting corrosion resistance of 17Cr-6Mn-5Ni-1.5Cu austenitic stainless steel in 0.6M NaCl aqueous solution was evaluated. UNS S30403 (304L) steel was used as benchmark material. Solution heat treatments (SHT) were conducted at 1010°C, 1040°C, 1070°C and 1100°C. The microstructural characterization revealed the presence of δ-ferrite, especially in the asreceived condition (AR). The SHT decreased the proportion of the ferrite phase. Mnrich precipitates were observed in the as-received condition of 17Cr-6Mn-5Ni-1.5Cu steel, but they were dissolved after the SHT, causing localized Mn enrichment in the austenite. Potentiodynamic tests showed that the pitting potential (Ep) in the 304L steel was not altered significantly after SHT. On the other hand, the value of Ep of the 17Cr-6Mn-5Ni-1.5Cu steel decreased after SHT. This detrimental effect was explained by the formation of Mn enrichment areas due to the solubilization of Mn-rich precipitates, which promoted preferential Cl- adsorption in these regions.
publishDate 2015
dc.date.none.fl_str_mv 2015-03-01
dc.type.driver.fl_str_mv 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://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000100091
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000100091
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0370-44672015680002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola de Minas
publisher.none.fl_str_mv Escola de Minas
dc.source.none.fl_str_mv Rem: Revista Escola de Minas v.68 n.1 2015
reponame:REM. Revista Escola de Minas (Online)
instname:Escola de Minas
instacron:ESCOLA DE MINAS
instname_str Escola de Minas
instacron_str ESCOLA DE MINAS
institution ESCOLA DE MINAS
reponame_str REM. Revista Escola de Minas (Online)
collection REM. Revista Escola de Minas (Online)
repository.name.fl_str_mv REM. Revista Escola de Minas (Online) - Escola de Minas
repository.mail.fl_str_mv editor@rem.com.br
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