期刊
CORROSION
卷 72, 期 10, 页码 1215-1219出版社
NATL ASSOC CORROSION ENG
DOI: 10.5006/2132
关键词
aluminum alloy 7050-T7451; fatigue; pit morphology
资金
- Office of Naval Research [ONR: N00014-14-1-0012]
Electrochemical experiments were used to create morphologies representative of galvanically-induced corrosion between aluminum alloy (AA) 7050-T7451 (UNS A97050) and Type 316 steel (UNS S31600) in a fastener configuration. The effects of these corrosion damage morphologies on the fatigue behavior were investigated. Results showed that severe macroscale metrics considered for discrete pits and general corrosion with surface recession do not correlate with the location of fatigue crack initiation. However, for intergranular corrosion, the plane that had higher number of fissure and higher total fissure depth tended to correlate to the location of fatigue crack formation.
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