...Ankur Kumar; Arushi Garg; Gajanan P. Chaudhari Exfoliation corrosion susceptibility of rolled sheets of 7068 and 5059 aluminum alloys is investigated using immersion tests. The evolution of exfoliation attack with immersion time is ascertained by observing the depth of attack. Cross-sectional...

... environments—exfoliation corrosion (EXCO) and 3.5 wt% NaCl—were used for the exposure of tensile and prenotched compact-tension C(T) specimens of AA2024-T3. Different embrittlement mechanisms are noticed for the two investigated corrosive environments. Significant intergranular corrosion (IGC) and grain...

... × 5 cm or 5 cm × 2.5 cm. ^‡ Corresponding author. E-mail: [email protected] . 17 July 2019 14 November 2019 14 November 2019 © 2020, NACE International 2020 aluminum alloy ASTM G85-A2 exfoliation corrosion salt spray chamber design...

... corrosion known as exfoliation. Exfoliation corrosion (EC) occurs in sheet, plate, and extruded materials that have a laminar grain structure. When attack occurs along grain boundaries or other susceptible microstructural features parallel to the material surface, corrosion products accumulate under...

... the G34 and ANCIT testing environments and to explain the electrochemical impact of each testing variable on the exfoliation corrosion of AA2060. Understanding the role of each component of the testing environment will allow more intelligent design of future immersion tests, reducing the need for time...

... (MASTMAASIS), which were used to predict the alloy system’s exfoliation corrosion (EFC) susceptibility. Here, results show that exposure to the first two environments failed to accurately predict EFC during seacoast exposure while the latter was successful. The final attacks in the 2060 alloy varied from...

...Shuangqing Sun; Shenghui Chen; Yunfei Ma; Qifei Zheng; Songqing Hu Exfoliation of extruded AA2024-T4 (UNS A92024) in the industrial and coastal-industrial environments was investigated by the field test and laboratory-accelerated test. Results show that the exfoliation corrosion was influenced...

... and the corrosion products were mainly aluminum sulfate hydroxide hydrates (Al₂SO₄[OH]·H₂O and AlSO₄[OH]·5H₂O), respectively. aluminum atmospheric corrosion exfoliation corrosion scanning electron microscopy weight loss x-ray diffraction Among...

...X. Zhao; G.S. Frankel Exfoliation corrosion (EFC) of AA7178 (UNS A97178) has been quantitatively studied using the exfoliation of slices in humidity (ESH) test, which measures exfoliation layer thickness of the specimens as a function of time in a humid environment after an electrochemical...

...X. Zhao; G.S. Frankel; B. Zoofan; S.I. Rokhlin In situ x-ray radiography was used to characterize inter-granular and exfoliation corrosion in high-strength Al alloys. The samples were either exposed to sodium chloride (NaCl) solution at a controlled potential or to high humidity after...

... rapidly and continued with a decreasing rate. Pitting density (in pits/m²) and maximum depth of attack are given in Figure 2 . Between 5 h and 24 h, the pitting density increased slowly. Between 24 h and 36 h, pitting density increased even more. After 48 h, exfoliation corrosion commenced...

..., intergranular corrosion, and exfoliation corrosion was shown to be influenced by heat treatment, which reduced from natural aging, through overaging to peak aging. Materials with peak aging showed low corrosion resistance. The decreased corrosion resistance corresponded to decreased corrosion potential...