Effects of micro-scale corrosion damage features and local microstructure on fatigue crack initiation location
•Corrosion and microstructure characterized a fatigue initiation sites in AA7050.•No independent correlation between individual features and initiation locations.•Strongly suggests a coupled interaction of features governs the initiation behavior. The fatigue resistance of aerospace structures is de...
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| Veröffentlicht in: | International journal of fatigue 2021-09, Vol.150, p.106301, Article 106301 |
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| container_title | International journal of fatigue |
| container_volume | 150 |
| creator | Co, Noelle Easter C. Burns, James T. |
| description | •Corrosion and microstructure characterized a fatigue initiation sites in AA7050.•No independent correlation between individual features and initiation locations.•Strongly suggests a coupled interaction of features governs the initiation behavior.
The fatigue resistance of aerospace structures is degraded by the presence of corrosion damage. This work characterizes the micro-scale ( |
| doi_str_mv | 10.1016/j.ijfatigue.2021.106301 |
| format | Article |
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The fatigue resistance of aerospace structures is degraded by the presence of corrosion damage. This work characterizes the micro-scale (<50 µm) corrosion morphologies and the underlying microstructure of AA7050 that impact fatigue crack formation. Corroded specimens were cycled to failure using a fracture surface marking spectrum. Pre-test corrosion characterization, fractography and EBSD were performed. No corrosion damage or microstructure metric independently correlates to the location of fatigue crack initiation from corroded surfaces. However, there is a modest correlation between the grain that initiates the fatigue crack and grains that have a high misorientation angle with respect to adjacent grains.</description><identifier>ISSN: 0142-1123</identifier><identifier>EISSN: 1879-3452</identifier><identifier>DOI: 10.1016/j.ijfatigue.2021.106301</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Aluminum ; Corrosion ; Corrosion effects ; Corrosion fatigue ; Corrosion morphology ; Corrosion resistance ; Corrosion tests ; Crack initiation ; Crack propagation ; Damage ; Fatigue crack growth ; Fatigue failure ; Fatigue initiation ; Fatigue strength ; Fracture mechanics ; Fracture surfaces ; Grains ; Materials fatigue ; Microstructure ; Misalignment ; Morphology ; Scale (corrosion)</subject><ispartof>International journal of fatigue, 2021-09, Vol.150, p.106301, Article 106301</ispartof><rights>2021 Elsevier Ltd</rights><rights>Copyright Elsevier BV Sep 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c392t-f02a0c39274b244e433ce9f384e70ecaabd1256e33746602f90fb1ff30ea2013</citedby><cites>FETCH-LOGICAL-c392t-f02a0c39274b244e433ce9f384e70ecaabd1256e33746602f90fb1ff30ea2013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ijfatigue.2021.106301$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Co, Noelle Easter C.</creatorcontrib><creatorcontrib>Burns, James T.</creatorcontrib><title>Effects of micro-scale corrosion damage features and local microstructure on fatigue crack initiation location</title><title>International journal of fatigue</title><description>•Corrosion and microstructure characterized a fatigue initiation sites in AA7050.•No independent correlation between individual features and initiation locations.•Strongly suggests a coupled interaction of features governs the initiation behavior.
The fatigue resistance of aerospace structures is degraded by the presence of corrosion damage. This work characterizes the micro-scale (<50 µm) corrosion morphologies and the underlying microstructure of AA7050 that impact fatigue crack formation. Corroded specimens were cycled to failure using a fracture surface marking spectrum. Pre-test corrosion characterization, fractography and EBSD were performed. No corrosion damage or microstructure metric independently correlates to the location of fatigue crack initiation from corroded surfaces. However, there is a modest correlation between the grain that initiates the fatigue crack and grains that have a high misorientation angle with respect to adjacent grains.</description><subject>Aluminum</subject><subject>Corrosion</subject><subject>Corrosion effects</subject><subject>Corrosion fatigue</subject><subject>Corrosion morphology</subject><subject>Corrosion resistance</subject><subject>Corrosion tests</subject><subject>Crack initiation</subject><subject>Crack propagation</subject><subject>Damage</subject><subject>Fatigue crack growth</subject><subject>Fatigue failure</subject><subject>Fatigue initiation</subject><subject>Fatigue strength</subject><subject>Fracture mechanics</subject><subject>Fracture surfaces</subject><subject>Grains</subject><subject>Materials fatigue</subject><subject>Microstructure</subject><subject>Misalignment</subject><subject>Morphology</subject><subject>Scale (corrosion)</subject><issn>0142-1123</issn><issn>1879-3452</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRS0EEqXwDVhinTJ-JG6WVVUeUiU23VuuM64c2rjYCRJ_j6NUbFnNaObeeRxCHhksGLDquV341pneHwZccOAsVysB7IrM2FLVhZAlvyYzYJIXjHFxS-5SagGgBlXOSLdxDm2faHD05G0MRbLmiNSGGEPyoaONOZkDUoemHyImarqGHkMWTfrUx8GOHZq1lzuojcZ-Ut_53udKboyGMbknN84cEz5c4pzsXja79Vux_Xh9X6-2hRU17wsH3MCYKrnnUqIUwmLtxFKiArTG7BvGywqFULKqgLsa3J45JwANBybm5Gkae47ha8DU6zYMscsbNS9LphiruMoqNanGN1JEp8_Rn0z80Qz0yFa3-o-tHtnqiW12riYn5h--PUadrMfOYuNjpqmb4P-d8Qu-ZYhH</recordid><startdate>202109</startdate><enddate>202109</enddate><creator>Co, Noelle Easter C.</creator><creator>Burns, James T.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>202109</creationdate><title>Effects of micro-scale corrosion damage features and local microstructure on fatigue crack initiation location</title><author>Co, Noelle Easter C. ; Burns, James T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c392t-f02a0c39274b244e433ce9f384e70ecaabd1256e33746602f90fb1ff30ea2013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aluminum</topic><topic>Corrosion</topic><topic>Corrosion effects</topic><topic>Corrosion fatigue</topic><topic>Corrosion morphology</topic><topic>Corrosion resistance</topic><topic>Corrosion tests</topic><topic>Crack initiation</topic><topic>Crack propagation</topic><topic>Damage</topic><topic>Fatigue crack growth</topic><topic>Fatigue failure</topic><topic>Fatigue initiation</topic><topic>Fatigue strength</topic><topic>Fracture mechanics</topic><topic>Fracture surfaces</topic><topic>Grains</topic><topic>Materials fatigue</topic><topic>Microstructure</topic><topic>Misalignment</topic><topic>Morphology</topic><topic>Scale (corrosion)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Co, Noelle Easter C.</creatorcontrib><creatorcontrib>Burns, James T.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>International journal of fatigue</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Co, Noelle Easter C.</au><au>Burns, James T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of micro-scale corrosion damage features and local microstructure on fatigue crack initiation location</atitle><jtitle>International journal of fatigue</jtitle><date>2021-09</date><risdate>2021</risdate><volume>150</volume><spage>106301</spage><pages>106301-</pages><artnum>106301</artnum><issn>0142-1123</issn><eissn>1879-3452</eissn><abstract>•Corrosion and microstructure characterized a fatigue initiation sites in AA7050.•No independent correlation between individual features and initiation locations.•Strongly suggests a coupled interaction of features governs the initiation behavior.
The fatigue resistance of aerospace structures is degraded by the presence of corrosion damage. This work characterizes the micro-scale (<50 µm) corrosion morphologies and the underlying microstructure of AA7050 that impact fatigue crack formation. Corroded specimens were cycled to failure using a fracture surface marking spectrum. Pre-test corrosion characterization, fractography and EBSD were performed. No corrosion damage or microstructure metric independently correlates to the location of fatigue crack initiation from corroded surfaces. However, there is a modest correlation between the grain that initiates the fatigue crack and grains that have a high misorientation angle with respect to adjacent grains.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijfatigue.2021.106301</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0142-1123 |
| ispartof | International journal of fatigue, 2021-09, Vol.150, p.106301, Article 106301 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Aluminum Corrosion Corrosion effects Corrosion fatigue Corrosion morphology Corrosion resistance Corrosion tests Crack initiation Crack propagation Damage Fatigue crack growth Fatigue failure Fatigue initiation Fatigue strength Fracture mechanics Fracture surfaces Grains Materials fatigue Microstructure Misalignment Morphology Scale (corrosion) |
| title | Effects of micro-scale corrosion damage features and local microstructure on fatigue crack initiation location |
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