Effect of microstructure on the corrosion behaviour of extruded heat exchanger aluminium alloys
Aluminium extrusions used for heat transfer applications are exposed to corrosive environments, which can eventually lead to perforation of the tube by pitting. In this study, the effect of microstructure on the corrosion behaviour of extruded AA3XXX series alloys has been investigated. It was revea...
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| Veröffentlicht in: | Surface and interface analysis 2013-10, Vol.45 (10), p.1597-1603 |
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| creator | Laferrere, A. Parson, N. Zhou, X. Thompson, G. |
| description | Aluminium extrusions used for heat transfer applications are exposed to corrosive environments, which can eventually lead to perforation of the tube by pitting. In this study, the effect of microstructure on the corrosion behaviour of extruded AA3XXX series alloys has been investigated. It was revealed that pits developed were purely crystallographic and a drop testing procedure was developed to simulate the seawater acetic acid test in a laboratory environment. The drop testing experiment has been successfully employed to study the early stages of pitting for different surface finishes. Selected pits were studied with in‐SEM nanotomography. Stable pits initiated on areas free of second‐phase particles, in the vicinity of grain boundaries. When the corrosion front reached a grain boundary plane, pit propagation was interrupted in the direction perpendicular to the plane and the corrosion front followed grain boundaries, corroding one grain body more than its neighbour. A mechanistic understanding of crystallographic pitting corrosion has been developed. Copyright © 2013 John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/sia.5282 |
| format | Article |
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In this study, the effect of microstructure on the corrosion behaviour of extruded AA3XXX series alloys has been investigated. It was revealed that pits developed were purely crystallographic and a drop testing procedure was developed to simulate the seawater acetic acid test in a laboratory environment. The drop testing experiment has been successfully employed to study the early stages of pitting for different surface finishes. Selected pits were studied with in‐SEM nanotomography. Stable pits initiated on areas free of second‐phase particles, in the vicinity of grain boundaries. When the corrosion front reached a grain boundary plane, pit propagation was interrupted in the direction perpendicular to the plane and the corrosion front followed grain boundaries, corroding one grain body more than its neighbour. A mechanistic understanding of crystallographic pitting corrosion has been developed. 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Interface Anal</addtitle><description>Aluminium extrusions used for heat transfer applications are exposed to corrosive environments, which can eventually lead to perforation of the tube by pitting. In this study, the effect of microstructure on the corrosion behaviour of extruded AA3XXX series alloys has been investigated. It was revealed that pits developed were purely crystallographic and a drop testing procedure was developed to simulate the seawater acetic acid test in a laboratory environment. The drop testing experiment has been successfully employed to study the early stages of pitting for different surface finishes. Selected pits were studied with in‐SEM nanotomography. Stable pits initiated on areas free of second‐phase particles, in the vicinity of grain boundaries. When the corrosion front reached a grain boundary plane, pit propagation was interrupted in the direction perpendicular to the plane and the corrosion front followed grain boundaries, corroding one grain body more than its neighbour. A mechanistic understanding of crystallographic pitting corrosion has been developed. Copyright © 2013 John Wiley & Sons, Ltd.</description><subject>accelerated corrosion testing</subject><subject>aluminium alloys</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Corrosion</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>crystallographic pitting</subject><subject>Exact sciences and technology</subject><subject>Extrusion</subject><subject>Grain boundaries</subject><subject>heat exchangers</subject><subject>Impact tests</subject><subject>Nanostructure</subject><subject>Physics</subject><subject>Pits</subject><subject>Pitting (corrosion)</subject><subject>Planes</subject><issn>0142-2421</issn><issn>1096-9918</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqN0V1rFTEQBuAgCh6r4E9YEMGbrckkm00uS6ltsSjS-nEXZrOzntT9aJNd7fn3ZumhgiB4lUx4eGHyMvZS8EPBObxNAQ8rMPCIbQS3urRWmMdsw4WCEhSIp-xZSteccyON3jB30nXk52LqiiH4OKU5Ln5eIhXTWMxbKvwU82vIU0Nb_BmmJa6Y7jJsqS22hHOe_BbH7xQL7JchjGEZ8q2fduk5e9Jhn-jF_jxgn9-dXB2flRcfT8-Pjy5Kr6CG0jRVA0AWCUnyhntBpmkbC1y1qPIOXNatV1a0ukON3BJqS7ZS2EBOMPKAvbnPvYnT7UJpdkNInvoeR5qW5IS2IKWB6j-oUqYGIdVKX_1Fr_P-Y14kK7BGCGv0n8D1_1Kkzt3EMGDcOcHdWorLpbi1lExf7wMxeey7iKMP6cFDXavK6Cq78t79Cj3t_pnnLs-P9rl7H9JMdw8e4w-na1lX7uuHU3f26duXq8v3wkn5Gz7Lqfw</recordid><startdate>201310</startdate><enddate>201310</enddate><creator>Laferrere, A.</creator><creator>Parson, N.</creator><creator>Zhou, X.</creator><creator>Thompson, G.</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>7QF</scope><scope>7SE</scope><scope>7TB</scope><scope>FR3</scope></search><sort><creationdate>201310</creationdate><title>Effect of microstructure on the corrosion behaviour of extruded heat exchanger aluminium alloys</title><author>Laferrere, A. ; Parson, N. ; Zhou, X. ; Thompson, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4272-8b5b22e9aeae30b0c1e8bdb9204da4991037dc491d6fa6a09ea69e954ab2c4283</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>accelerated corrosion testing</topic><topic>aluminium alloys</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Corrosion</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>crystallographic pitting</topic><topic>Exact sciences and technology</topic><topic>Extrusion</topic><topic>Grain boundaries</topic><topic>heat exchangers</topic><topic>Impact tests</topic><topic>Nanostructure</topic><topic>Physics</topic><topic>Pits</topic><topic>Pitting (corrosion)</topic><topic>Planes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Laferrere, A.</creatorcontrib><creatorcontrib>Parson, N.</creatorcontrib><creatorcontrib>Zhou, X.</creatorcontrib><creatorcontrib>Thompson, G.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Engineering Research Database</collection><jtitle>Surface and interface analysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Laferrere, A.</au><au>Parson, N.</au><au>Zhou, X.</au><au>Thompson, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of microstructure on the corrosion behaviour of extruded heat exchanger aluminium alloys</atitle><jtitle>Surface and interface analysis</jtitle><addtitle>Surf. Interface Anal</addtitle><date>2013-10</date><risdate>2013</risdate><volume>45</volume><issue>10</issue><spage>1597</spage><epage>1603</epage><pages>1597-1603</pages><issn>0142-2421</issn><eissn>1096-9918</eissn><coden>SIANDQ</coden><abstract>Aluminium extrusions used for heat transfer applications are exposed to corrosive environments, which can eventually lead to perforation of the tube by pitting. In this study, the effect of microstructure on the corrosion behaviour of extruded AA3XXX series alloys has been investigated. It was revealed that pits developed were purely crystallographic and a drop testing procedure was developed to simulate the seawater acetic acid test in a laboratory environment. The drop testing experiment has been successfully employed to study the early stages of pitting for different surface finishes. Selected pits were studied with in‐SEM nanotomography. Stable pits initiated on areas free of second‐phase particles, in the vicinity of grain boundaries. When the corrosion front reached a grain boundary plane, pit propagation was interrupted in the direction perpendicular to the plane and the corrosion front followed grain boundaries, corroding one grain body more than its neighbour. A mechanistic understanding of crystallographic pitting corrosion has been developed. Copyright © 2013 John Wiley & Sons, Ltd.</abstract><cop>Chichester</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/sia.5282</doi><tpages>7</tpages></addata></record> |
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| ispartof | Surface and interface analysis, 2013-10, Vol.45 (10), p.1597-1603 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | accelerated corrosion testing aluminium alloys Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Corrosion Cross-disciplinary physics: materials science rheology crystallographic pitting Exact sciences and technology Extrusion Grain boundaries heat exchangers Impact tests Nanostructure Physics Pits Pitting (corrosion) Planes |
| title | Effect of microstructure on the corrosion behaviour of extruded heat exchanger aluminium alloys |
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