Pitting susceptibility of AISI 304 stainless steel after cold rolling

Detalhes bibliográficos
Autor(a) principal: CORREA, OLANDIR V.
Data de Publicação: 2016
Outros Autores: OLIVEIRA, MARA C.L. de, ANTUNES, RENATO A., CONGRESSO BRASILEIRO DE CORROS??O, 34.; INTERNATIONAL CORROSION MEETING, 5th.; CONGRESO IBEROAMERICANO DE CORROSI??N Y PROTECCI??N, 10th.; CONCURSO DE FOTOGRAFIA DE CORROS??O E DEGRADA????O DE MATERIAIS, 19.; EXPOSI????O DE TECNOLOGIAS PARA PREVEN????O E CONTROLE DA CORROS??O, 34
Tipo de documento: Artigo de conferência
Título da fonte: Repositório Institucional do IPEN
Texto Completo: http://repositorio.ipen.br/handle/123456789/26436
Resumo: The austenitic grade AISI 304 stainless steel is traditionally employed for processing equipment in chemical plants due to its relatively good corrosion resistance and mechanical stability. However, it is susceptible to pitting corrosion due to chloride attack which can lead to catastrophic failures during operation. Cold rolling of the metallic sheets used to construct equipment such as tanks and pressure vessels can further aggravate the situation by increasing the material???s susceptibility to localized corrosion. In this work the pitting corrosion resistance of cold rolled AISI 304 stainless steel plates was assessed using chronoamperometric curves and potentiodynamic polarization curves. Cold rolling was performed in a two-roll mill at room temperature, achieving thickness reductions ranging from 10% to 70%. The presence of pits on the surface of the samples was assessed using optical microscopy. The onset of pitting corrosion was closely related to the strain level of the rolled plates. There was a steep decrease of resistance to localized attack as the thickness reduction increased.
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spelling 2016-06-29T16:30:44Z2016-06-29T16:30:44Z19-23 de maio, 2014http://repositorio.ipen.br/handle/123456789/26436The austenitic grade AISI 304 stainless steel is traditionally employed for processing equipment in chemical plants due to its relatively good corrosion resistance and mechanical stability. However, it is susceptible to pitting corrosion due to chloride attack which can lead to catastrophic failures during operation. Cold rolling of the metallic sheets used to construct equipment such as tanks and pressure vessels can further aggravate the situation by increasing the material???s susceptibility to localized corrosion. In this work the pitting corrosion resistance of cold rolled AISI 304 stainless steel plates was assessed using chronoamperometric curves and potentiodynamic polarization curves. Cold rolling was performed in a two-roll mill at room temperature, achieving thickness reductions ranging from 10% to 70%. The presence of pits on the surface of the samples was assessed using optical microscopy. The onset of pitting corrosion was closely related to the strain level of the rolled plates. There was a steep decrease of resistance to localized attack as the thickness reduction increased.Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-06-29T16:30:44Z No. of bitstreams: 1 22347.pdf: 644126 bytes, checksum: 75c72f82670c44bfe708d20cce000445 (MD5)Made available in DSpace on 2016-06-29T16:30:44Z (GMT). No. of bitstreams: 1 22347.pdf: 644126 bytes, checksum: 75c72f82670c44bfe708d20cce000445 (MD5)Associa????o Brasileira de Corros??o ??? ABRACOstainless steel-304pitting corrosionamperometrypotentiometryoptical microscopyelectrochemistrypolarizationPitting susceptibility of AISI 304 stainless steel after cold rollinginfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectINTERCORRIRio de Janeiro, RJFortaleza, CECORREA, OLANDIR V.OLIVEIRA, MARA C.L. deANTUNES, RENATO A.CONGRESSO BRASILEIRO DE CORROS??O, 34.; INTERNATIONAL CORROSION MEETING, 5th.; CONGRESO IBEROAMERICANO DE CORROSI??N Y PROTECCI??N, 10th.; CONCURSO DE FOTOGRAFIA DE CORROS??O E DEGRADA????O DE MATERIAIS, 19.; EXPOSI????O DE TECNOLOGIAS PARA PREVEN????O E CONTROLE DA CORROS??O, 34info:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN223472014CORREA, OLANDIR V.16-06Anais48822572685CORREA, OLANDIR V.:488:730:SOLIVEIRA, MARA C.L. 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dc.title.pt_BR.fl_str_mv Pitting susceptibility of AISI 304 stainless steel after cold rolling
title Pitting susceptibility of AISI 304 stainless steel after cold rolling
spellingShingle Pitting susceptibility of AISI 304 stainless steel after cold rolling
CORREA, OLANDIR V.
stainless steel-304
pitting corrosion
amperometry
potentiometry
optical microscopy
electrochemistry
polarization
title_short Pitting susceptibility of AISI 304 stainless steel after cold rolling
title_full Pitting susceptibility of AISI 304 stainless steel after cold rolling
title_fullStr Pitting susceptibility of AISI 304 stainless steel after cold rolling
title_full_unstemmed Pitting susceptibility of AISI 304 stainless steel after cold rolling
title_sort Pitting susceptibility of AISI 304 stainless steel after cold rolling
author CORREA, OLANDIR V.
author_facet CORREA, OLANDIR V.
OLIVEIRA, MARA C.L. de
ANTUNES, RENATO A.
CONGRESSO BRASILEIRO DE CORROS??O, 34.; INTERNATIONAL CORROSION MEETING, 5th.; CONGRESO IBEROAMERICANO DE CORROSI??N Y PROTECCI??N, 10th.; CONCURSO DE FOTOGRAFIA DE CORROS??O E DEGRADA????O DE MATERIAIS, 19.; EXPOSI????O DE TECNOLOGIAS PARA PREVEN????O E CONTROLE DA CORROS??O, 34
author_role author
author2 OLIVEIRA, MARA C.L. de
ANTUNES, RENATO A.
CONGRESSO BRASILEIRO DE CORROS??O, 34.; INTERNATIONAL CORROSION MEETING, 5th.; CONGRESO IBEROAMERICANO DE CORROSI??N Y PROTECCI??N, 10th.; CONCURSO DE FOTOGRAFIA DE CORROS??O E DEGRADA????O DE MATERIAIS, 19.; EXPOSI????O DE TECNOLOGIAS PARA PREVEN????O E CONTROLE DA CORROS??O, 34
author2_role author
author
author
dc.contributor.author.fl_str_mv CORREA, OLANDIR V.
OLIVEIRA, MARA C.L. de
ANTUNES, RENATO A.
CONGRESSO BRASILEIRO DE CORROS??O, 34.; INTERNATIONAL CORROSION MEETING, 5th.; CONGRESO IBEROAMERICANO DE CORROSI??N Y PROTECCI??N, 10th.; CONCURSO DE FOTOGRAFIA DE CORROS??O E DEGRADA????O DE MATERIAIS, 19.; EXPOSI????O DE TECNOLOGIAS PARA PREVEN????O E CONTROLE DA CORROS??O, 34
dc.subject.por.fl_str_mv stainless steel-304
pitting corrosion
amperometry
potentiometry
optical microscopy
electrochemistry
polarization
topic stainless steel-304
pitting corrosion
amperometry
potentiometry
optical microscopy
electrochemistry
polarization
description The austenitic grade AISI 304 stainless steel is traditionally employed for processing equipment in chemical plants due to its relatively good corrosion resistance and mechanical stability. However, it is susceptible to pitting corrosion due to chloride attack which can lead to catastrophic failures during operation. Cold rolling of the metallic sheets used to construct equipment such as tanks and pressure vessels can further aggravate the situation by increasing the material???s susceptibility to localized corrosion. In this work the pitting corrosion resistance of cold rolled AISI 304 stainless steel plates was assessed using chronoamperometric curves and potentiodynamic polarization curves. Cold rolling was performed in a two-roll mill at room temperature, achieving thickness reductions ranging from 10% to 70%. The presence of pits on the surface of the samples was assessed using optical microscopy. The onset of pitting corrosion was closely related to the strain level of the rolled plates. There was a steep decrease of resistance to localized attack as the thickness reduction increased.
publishDate 2016
dc.date.evento.pt_BR.fl_str_mv 19-23 de maio, 2014
dc.date.accessioned.fl_str_mv 2016-06-29T16:30:44Z
dc.date.available.fl_str_mv 2016-06-29T16:30:44Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://repositorio.ipen.br/handle/123456789/26436
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dc.publisher.none.fl_str_mv Associa????o Brasileira de Corros??o ??? ABRACO
publisher.none.fl_str_mv Associa????o Brasileira de Corros??o ??? ABRACO
dc.source.none.fl_str_mv reponame:Repositório Institucional do IPEN
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