Review of micro-scale and atomic-scale corrosion mechanisms of second phases in aluminum alloys

Localized corrosion of aluminum (Al) alloys, such as pitting corrosion, intergranular corrosion, and stress corrosion cracking is closely related to the micro-galvanic corrosion between the second phase and the Al matrix. Using high-resolution transmission electron microscopy and first principles ca...

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Bibliographic Details
Published inTransactions of Nonferrous Metals Society of China Vol. 31; no. 11; pp. 3205 - 3227
Main Authors JI, Yuan-yuan, XU, Yun-ze, ZHANG, Bin-bin, BEHNAMIAN, Yashar, XIA, Da-hai, HU, Wen-bin
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2021
Subjects
Al alloys
corrosion
dealloying
first principles calculations
corrosion
first principles calculations
dealloying
Al alloys
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Summary:Localized corrosion of aluminum (Al) alloys, such as pitting corrosion, intergranular corrosion, and stress corrosion cracking is closely related to the micro-galvanic corrosion between the second phase and the Al matrix. Using high-resolution transmission electron microscopy and first principles calculations, the factors that affect corrosion mechanisms of the second phase in Al alloys at micro-scale and atomic-scale were examined, including the composition and structure of second phase, pH of the environment, stress and adsorption behavior of adsorbates (such as Cl−, H2O, OH− and O2−).
ISSN:1003-6326
DOI:10.1016/S1003-6326(21)65727-8