Corrosion resistance of aged die cast magnesium alloy AZ91D
The corrosion behaviour of die cast magnesium alloy AZ91D aged at 160 °C was investigated. The corrosion rate of the alloy decreases with ageing time in the initial stages and then increases again at ageing times greater than 45 h. The dependence of the corrosion rate on ageing time can be related t...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-02, Vol.366 (1), p.74-86 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Song, Guangling Bowles, Amanda L StJohn, David H |
| description | The corrosion behaviour of die cast magnesium alloy AZ91D aged at 160
°C was investigated. The corrosion rate of the alloy decreases with ageing time in the initial stages and then increases again at ageing times greater than 45
h. The dependence of the corrosion rate on ageing time can be related to the changes in microstructure and local composition during ageing. Precipitation of the β phase (Mg
17Al
12) occurs exclusively along the grain boundaries during ageing. The β phase acts as a barrier, resulting in a decreasing corrosion rate in the initial stages of ageing. In the later stages, the decreasing aluminium content of α grains makes the α matrix more active, causing an increase in the corrosion rate. Electrochemical testing results also confirm the combined effects of the changes in α and β phases on the corrosion resistance of the aged die cast AZ91D alloy. |
| doi_str_mv | 10.1016/j.msea.2003.08.060 |
| format | Article |
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°C was investigated. The corrosion rate of the alloy decreases with ageing time in the initial stages and then increases again at ageing times greater than 45
h. The dependence of the corrosion rate on ageing time can be related to the changes in microstructure and local composition during ageing. Precipitation of the β phase (Mg
17Al
12) occurs exclusively along the grain boundaries during ageing. The β phase acts as a barrier, resulting in a decreasing corrosion rate in the initial stages of ageing. In the later stages, the decreasing aluminium content of α grains makes the α matrix more active, causing an increase in the corrosion rate. Electrochemical testing results also confirm the combined effects of the changes in α and β phases on the corrosion resistance of the aged die cast AZ91D alloy.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2003.08.060</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Corrosion ; Corrosion mechanisms ; Corrosion prevention ; Exact sciences and technology ; Heat treatment ; Magnesium ; Metals. Metallurgy ; Microstructure</subject><ispartof>Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2004-02, Vol.366 (1), p.74-86</ispartof><rights>2003 Elsevier B.V.</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c425t-e8583ec5d25400e5cc5e533b2b2ab05935023989bc134aa07cef1494289eceba3</citedby><cites>FETCH-LOGICAL-c425t-e8583ec5d25400e5cc5e533b2b2ab05935023989bc134aa07cef1494289eceba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.msea.2003.08.060$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3549,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15533669$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Song, Guangling</creatorcontrib><creatorcontrib>Bowles, Amanda L</creatorcontrib><creatorcontrib>StJohn, David H</creatorcontrib><title>Corrosion resistance of aged die cast magnesium alloy AZ91D</title><title>Materials science & engineering. A, Structural materials : properties, microstructure and processing</title><description>The corrosion behaviour of die cast magnesium alloy AZ91D aged at 160
°C was investigated. The corrosion rate of the alloy decreases with ageing time in the initial stages and then increases again at ageing times greater than 45
h. The dependence of the corrosion rate on ageing time can be related to the changes in microstructure and local composition during ageing. Precipitation of the β phase (Mg
17Al
12) occurs exclusively along the grain boundaries during ageing. The β phase acts as a barrier, resulting in a decreasing corrosion rate in the initial stages of ageing. In the later stages, the decreasing aluminium content of α grains makes the α matrix more active, causing an increase in the corrosion rate. Electrochemical testing results also confirm the combined effects of the changes in α and β phases on the corrosion resistance of the aged die cast AZ91D alloy.</description><subject>Applied sciences</subject><subject>Corrosion</subject><subject>Corrosion mechanisms</subject><subject>Corrosion prevention</subject><subject>Exact sciences and technology</subject><subject>Heat treatment</subject><subject>Magnesium</subject><subject>Metals. Metallurgy</subject><subject>Microstructure</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNp9kDtPAzEQhC0EEiHwB6jcQHfH2j5fbEEThacUiQYaGsvn24sc3SPYF6T8exwlEh3VFjszu_MRcs0gZ8DKu3XeRbQ5BxA5qBxKOCETpmYiK7QoT8kENGeZBC3OyUWMawBgBcgJuV8MIQzRDz0NGH0cbe-QDg21K6xp7ZE6G0fa2VWf1tuO2rYddnT-pdnjJTlrbBvx6jin5PP56WPxmi3fX94W82XmCi7HDJVUAp2suSwAUDonUQpR8YrbCqQWErjQSleOicJamDlsWKELrjQ6rKyYkttD7iYM31uMo-l8dNi2tsdhGw1XjCupyyTkB6FLlWLAxmyC72zYGQZmz8mszZ6T2XMyoEzilEw3x3QbnW2bkAj4-OeU6dey1En3cNBhqvrjMZjoPCZatQ_oRlMP_r8zv9LAfLY</recordid><startdate>20040205</startdate><enddate>20040205</enddate><creator>Song, Guangling</creator><creator>Bowles, Amanda L</creator><creator>StJohn, David H</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SE</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20040205</creationdate><title>Corrosion resistance of aged die cast magnesium alloy AZ91D</title><author>Song, Guangling ; Bowles, Amanda L ; StJohn, David H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c425t-e8583ec5d25400e5cc5e533b2b2ab05935023989bc134aa07cef1494289eceba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Applied sciences</topic><topic>Corrosion</topic><topic>Corrosion mechanisms</topic><topic>Corrosion prevention</topic><topic>Exact sciences and technology</topic><topic>Heat treatment</topic><topic>Magnesium</topic><topic>Metals. Metallurgy</topic><topic>Microstructure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Song, Guangling</creatorcontrib><creatorcontrib>Bowles, Amanda L</creatorcontrib><creatorcontrib>StJohn, David H</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Corrosion Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, Guangling</au><au>Bowles, Amanda L</au><au>StJohn, David H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Corrosion resistance of aged die cast magnesium alloy AZ91D</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2004-02-05</date><risdate>2004</risdate><volume>366</volume><issue>1</issue><spage>74</spage><epage>86</epage><pages>74-86</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>The corrosion behaviour of die cast magnesium alloy AZ91D aged at 160
°C was investigated. The corrosion rate of the alloy decreases with ageing time in the initial stages and then increases again at ageing times greater than 45
h. The dependence of the corrosion rate on ageing time can be related to the changes in microstructure and local composition during ageing. Precipitation of the β phase (Mg
17Al
12) occurs exclusively along the grain boundaries during ageing. The β phase acts as a barrier, resulting in a decreasing corrosion rate in the initial stages of ageing. In the later stages, the decreasing aluminium content of α grains makes the α matrix more active, causing an increase in the corrosion rate. Electrochemical testing results also confirm the combined effects of the changes in α and β phases on the corrosion resistance of the aged die cast AZ91D alloy.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2003.08.060</doi><tpages>13</tpages></addata></record> |
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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2004-02, Vol.366 (1), p.74-86 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Applied sciences Corrosion Corrosion mechanisms Corrosion prevention Exact sciences and technology Heat treatment Magnesium Metals. Metallurgy Microstructure |
| title | Corrosion resistance of aged die cast magnesium alloy AZ91D |
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