Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
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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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 |
_version_ |
1754122198992289792 |