Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution
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...
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| Veröffentlicht in: | Rem: Revista Escola de Minas 2015-03, Vol.68 (1), p.91-96 |
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| creator | Hernández, José Wilmar Calderón Ladino, Duberney Hincapié Azevedo, Cesar Roberto de Farias Falleiros, Neusa Alonso |
| 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.
O efeito do tratamento térmico de solubilização sobre a resistência à corrosão por pite do aço inoxidável austenítico 17Cr-6Mn-5Ni-1,5Cu foi avaliado em solução de 0,6M NaCl. O aço UNS S30403 (304L) foi usado como referência. Foram realizados tratamentos térmicos de solubilização (TTS) a 1010°C, 1040°C, 1070°C e 1100°C. A caracterização microestrutural revelou a presença de ferrita δ, especialmente na condição tal como recebida (TCR), observou-se que os TTS diminuíram a quantidade de ferrita. Também foram observados precipitados ricos em Mn na condição TCR do aço 17Cr-6Mn-5Ni-1,5Cu, os quais foram dissolvidos pelos TTS, causando o enriquecimento localizado da austenita em Mn. Os testes potenciodinâmicos mostraram que o potencial de pite (Ep) do aço 304L não foi alterado significativamente após TTS. Por outro lado, o valor de Ep do aço 17Cr-6Mn-5Ni-1,5Cu diminuiu após os TTS. Esse efeito detrimental foi explicado pelo enriquecimento em Mn das áreas ao redor dos precipitados dissolvidos, o que promoveu a adsorção mais intensa de Cl- nessas regiões. |
| doi_str_mv | 10.1590/0370-44672015680002 |
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O efeito do tratamento térmico de solubilização sobre a resistência à corrosão por pite do aço inoxidável austenítico 17Cr-6Mn-5Ni-1,5Cu foi avaliado em solução de 0,6M NaCl. O aço UNS S30403 (304L) foi usado como referência. Foram realizados tratamentos térmicos de solubilização (TTS) a 1010°C, 1040°C, 1070°C e 1100°C. A caracterização microestrutural revelou a presença de ferrita δ, especialmente na condição tal como recebida (TCR), observou-se que os TTS diminuíram a quantidade de ferrita. Também foram observados precipitados ricos em Mn na condição TCR do aço 17Cr-6Mn-5Ni-1,5Cu, os quais foram dissolvidos pelos TTS, causando o enriquecimento localizado da austenita em Mn. Os testes potenciodinâmicos mostraram que o potencial de pite (Ep) do aço 304L não foi alterado significativamente após TTS. Por outro lado, o valor de Ep do aço 17Cr-6Mn-5Ni-1,5Cu diminuiu após os TTS. Esse efeito detrimental foi explicado pelo enriquecimento em Mn das áreas ao redor dos precipitados dissolvidos, o que promoveu a adsorção mais intensa de Cl- nessas regiões.</description><identifier>ISSN: 0370-4467</identifier><identifier>ISSN: 1807-0353</identifier><identifier>EISSN: 0370-4467</identifier><identifier>DOI: 10.1590/0370-44672015680002</identifier><language>eng</language><publisher>Escola de Minas</publisher><subject>ENGINEERING, CIVIL ; METALLURGY & METALLURGICAL ENGINEERING</subject><ispartof>Rem: Revista Escola de Minas, 2015-03, Vol.68 (1), p.91-96</ispartof><rights>This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2482-18d2b69cac09302cf532ed5653d3c7b4441befe51d7ecbc4ac533abfc01e8f013</citedby><cites>FETCH-LOGICAL-c2482-18d2b69cac09302cf532ed5653d3c7b4441befe51d7ecbc4ac533abfc01e8f013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids></links><search><creatorcontrib>Hernández, José Wilmar Calderón</creatorcontrib><creatorcontrib>Ladino, Duberney Hincapié</creatorcontrib><creatorcontrib>Azevedo, Cesar Roberto de Farias</creatorcontrib><creatorcontrib>Falleiros, Neusa Alonso</creatorcontrib><title>Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution</title><title>Rem: Revista Escola de Minas</title><addtitle>Rem: Rev. Esc. Minas</addtitle><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.
O efeito do tratamento térmico de solubilização sobre a resistência à corrosão por pite do aço inoxidável austenítico 17Cr-6Mn-5Ni-1,5Cu foi avaliado em solução de 0,6M NaCl. O aço UNS S30403 (304L) foi usado como referência. Foram realizados tratamentos térmicos de solubilização (TTS) a 1010°C, 1040°C, 1070°C e 1100°C. A caracterização microestrutural revelou a presença de ferrita δ, especialmente na condição tal como recebida (TCR), observou-se que os TTS diminuíram a quantidade de ferrita. Também foram observados precipitados ricos em Mn na condição TCR do aço 17Cr-6Mn-5Ni-1,5Cu, os quais foram dissolvidos pelos TTS, causando o enriquecimento localizado da austenita em Mn. Os testes potenciodinâmicos mostraram que o potencial de pite (Ep) do aço 304L não foi alterado significativamente após TTS. Por outro lado, o valor de Ep do aço 17Cr-6Mn-5Ni-1,5Cu diminuiu após os TTS. Esse efeito detrimental foi explicado pelo enriquecimento em Mn das áreas ao redor dos precipitados dissolvidos, o que promoveu a adsorção mais intensa de Cl- nessas regiões.</description><subject>ENGINEERING, CIVIL</subject><subject>METALLURGY & METALLURGICAL ENGINEERING</subject><issn>0370-4467</issn><issn>1807-0353</issn><issn>0370-4467</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNpVkEtLAzEQx4MoWGo_gZd8ga3JJvs6SqkPqHhQz0t2dtKNbJOSpII3P7pZqkUP82Bm_jPMj5Brzpa8aNgNExXLpCyrnPGirBlj-RmZnarnf_JLsgjBdGmiZrVs2Ix8rbVGiNRpGtx4iMZZOqCKNPrkd2hTy9I4IN2bGI3dUnDeuzDNdTioD-P8JFZ0MNuBPlmqDiGiNdEADVEZO2IIKUMcqbEUhtF50-Pp2hW50GoMuPiJc_J2t35dPWSb5_vH1e0mg1zWecbrPu_KBhSwRrAcdCFy7IuyEL2AqpNS8g41FryvEDqQCgohVKeBcaw142JOlse9AQyOrn13B2_TwfZlotP-8kv0eLJmEoijANK7waNu997slP9sOWsn8O0_4RG8-AYFrHYw</recordid><startdate>20150301</startdate><enddate>20150301</enddate><creator>Hernández, José Wilmar Calderón</creator><creator>Ladino, Duberney Hincapié</creator><creator>Azevedo, Cesar Roberto de Farias</creator><creator>Falleiros, Neusa Alonso</creator><general>Escola de Minas</general><scope>AAYXX</scope><scope>CITATION</scope><scope>GPN</scope></search><sort><creationdate>20150301</creationdate><title>Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution</title><author>Hernández, José Wilmar Calderón ; Ladino, Duberney Hincapié ; Azevedo, Cesar Roberto de Farias ; Falleiros, Neusa Alonso</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2482-18d2b69cac09302cf532ed5653d3c7b4441befe51d7ecbc4ac533abfc01e8f013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>ENGINEERING, CIVIL</topic><topic>METALLURGY & METALLURGICAL ENGINEERING</topic><toplevel>online_resources</toplevel><creatorcontrib>Hernández, José Wilmar Calderón</creatorcontrib><creatorcontrib>Ladino, Duberney Hincapié</creatorcontrib><creatorcontrib>Azevedo, Cesar Roberto de Farias</creatorcontrib><creatorcontrib>Falleiros, Neusa Alonso</creatorcontrib><collection>CrossRef</collection><collection>SciELO</collection><jtitle>Rem: Revista Escola de Minas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hernández, José Wilmar Calderón</au><au>Ladino, Duberney Hincapié</au><au>Azevedo, Cesar Roberto de Farias</au><au>Falleiros, Neusa Alonso</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution</atitle><jtitle>Rem: Revista Escola de Minas</jtitle><addtitle>Rem: Rev. Esc. Minas</addtitle><date>2015-03-01</date><risdate>2015</risdate><volume>68</volume><issue>1</issue><spage>91</spage><epage>96</epage><pages>91-96</pages><issn>0370-4467</issn><issn>1807-0353</issn><eissn>0370-4467</eissn><abstract>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.
O efeito do tratamento térmico de solubilização sobre a resistência à corrosão por pite do aço inoxidável austenítico 17Cr-6Mn-5Ni-1,5Cu foi avaliado em solução de 0,6M NaCl. O aço UNS S30403 (304L) foi usado como referência. Foram realizados tratamentos térmicos de solubilização (TTS) a 1010°C, 1040°C, 1070°C e 1100°C. A caracterização microestrutural revelou a presença de ferrita δ, especialmente na condição tal como recebida (TCR), observou-se que os TTS diminuíram a quantidade de ferrita. Também foram observados precipitados ricos em Mn na condição TCR do aço 17Cr-6Mn-5Ni-1,5Cu, os quais foram dissolvidos pelos TTS, causando o enriquecimento localizado da austenita em Mn. Os testes potenciodinâmicos mostraram que o potencial de pite (Ep) do aço 304L não foi alterado significativamente após TTS. Por outro lado, o valor de Ep do aço 17Cr-6Mn-5Ni-1,5Cu diminuiu após os TTS. Esse efeito detrimental foi explicado pelo enriquecimento em Mn das áreas ao redor dos precipitados dissolvidos, o que promoveu a adsorção mais intensa de Cl- nessas regiões.</abstract><pub>Escola de Minas</pub><doi>10.1590/0370-44672015680002</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| title | Effect of solution heat treatment on the pitting corrosion behavior of a high Mn austenitic stainless steel in chloride solution |
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