2018
DOI: 10.1016/j.corsci.2017.12.001
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On the AA2198-T851 alloy microstructure and its correlation with localized corrosion behaviour

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Cited by 94 publications
(61 citation statements)
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“…But, because of lithium addition, they are highly susceptible to localized corrosion, mainly to a type known as severe localized corrosion (SLC) with peculiar characteristics, such as hydrogen evolution and fast penetration through the thickness of the alloy, named, SLC. This high susceptibility to localized corrosion has been associated with T1 phase (Al 2 CuLi) in Al‐Cu‐Li alloys, which is preferentially located in regions of high‐dislocation density because of intense deformation . According to Li et al, the T1 phase is initially anodic in relation to the matrix, but because of the high reactivity of lithium, the selective dissolution of the T1 phase occurs, causing copper enrichment and, consequently, a reversion of polarity with respect to the matrix.…”
Section: Introductionmentioning
confidence: 99%
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“…But, because of lithium addition, they are highly susceptible to localized corrosion, mainly to a type known as severe localized corrosion (SLC) with peculiar characteristics, such as hydrogen evolution and fast penetration through the thickness of the alloy, named, SLC. This high susceptibility to localized corrosion has been associated with T1 phase (Al 2 CuLi) in Al‐Cu‐Li alloys, which is preferentially located in regions of high‐dislocation density because of intense deformation . According to Li et al, the T1 phase is initially anodic in relation to the matrix, but because of the high reactivity of lithium, the selective dissolution of the T1 phase occurs, causing copper enrichment and, consequently, a reversion of polarity with respect to the matrix.…”
Section: Introductionmentioning
confidence: 99%
“…This high susceptibility to localized corrosion has been associated with T1 phase (Al 2 CuLi) in Al-Cu-Li alloys, which is preferentially located in regions of high-dislocation density because of intense deformation. [6][7][8][9][10][11] According to Li et al, 12 the T1 phase is initially anodic in relation to the matrix, but because of the high reactivity of lithium, the selective dissolution of the T1 phase occurs, causing copper enrichment and, consequently, a reversion of polarity with respect to the matrix.…”
Section: Introductionmentioning
confidence: 99%
“…Por outro lado, a acidificação é resultado da hidrólise promovida pelos íons de alumínio (Al 3+ ), principalmente em áreas de CLS. As regiões associadas à cor laranja correspondem a áreas de CLS circundadas por uma região protegida, características deste tipo de ataque [9,14,15,108].…”
Section: Avaliação Da Resistência à Corrosãounclassified
“…Embora toda a amostra tenha sofrido ataque localizado, menor quantidade de produtos de corrosão foi formada sobre a ZM Figura 48 (e) do que sobre o MB Figura 48 (d). Convém ressaltar que, devido à elevada agressividade da solução utilizadaneste ensaio, algumas das características da CLS (tais como: área protegida catodicamente ao redor do centro do pite e anel de produtos de corrosão[9,14,15,108,127]) não foram observadas.…”
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