S.E. Morozova, I.A. Volkov, M.A. Koltsova Influence of inter-operational storage on metallographic evaluation of intergranular corrosion // Proceedings of VIAM. 2026. No. 8 (162). С. 159-168. URL: https://www.viam-works.ru. DOI: 10.18577/2307-6046-2026-0-8-159-168.

Influence of inter-operational storage on metallographic evaluation of intergranular corrosion

S.E. Morozova, I.A. Volkov, M.A. Koltsova
Abstract

This study investigates the effect of storage time and conditions on the changes in the morphology and depth of corrosion damage of 1163-T1 and 1441-RT1 aluminum alloy specimens during the interval between accelerated intergranular corrosion testing and metallographic section preparation. It has been determined that the mean corrosion depth increases significantly depending on storage time and conditions. Based on the experimental findings, conclusions are drawn and practical recommendations for conducting accelerated intergranular corrosion tests are provided.

Keywords
intergranular corrosion, accelerated corrosion testing, aluminum alloys, sample preparation, specimen storage condition, metallographic analysis
Reference list

1.Kablov E.N., Antipov V.V., Chesnokov D.V., Kutyrev A.E. Application of Al–Mg–Si–Cu system aluminum alloy combined anodic dissolution for prognosis of tensile strength loss during natural exposure testing. Aviacionnye materialy i tehnologii, 2020, no. 2 (59), pp. 63–73. DOI: 10.18577/2071-9140-2020-0-2-63-73.

2. Trapeznikov A.V., Leonov A.A., Vlasova K.A., Chumakova E.S. Influence of coatings on the corrosion properties of AK7ch and VAL10 aluminum alloys on specimens with defects eliminated by cold spraying. Aviation materials and technologies, 2023, no. 4 (73), pp. 55–65. Available at: http://www.journal.viam.ru (accessed: April 09, 2026). DOI: 10.18577/2713-0193-2023-0-4-55-65.

3. Cai B., Xu Z., Liu G. et al. Understanding of the occurrence of intergranular corrosion in 2024 aluminum alloy under atmospheric environment. Journal of Materials Research and Technology, 2025, vol. 35, pp. 6690–6699.

4. Zhao J., Zhao T., Zhang Y. et al. Corrosion Behavior of the 2024 Aluminum Alloy in the Atmospheric Environment of the South China Sea Islands. Coatings, 2024, vol. 14 (3), p. 331.

5. Chen J., Liu H., Li J. et al. Simultaneously improve hardness and intergranular corrosion resistance for 2024 Al alloy by using ultrasonic shot peening. Materials Today Communications, 2025, vol. 42, p. 611.

6. Meng Y., Li S., Tian W. Intergranular corrosion of spark plasma sintered 2024 aluminum alloy at different heat treatment states. Rare Metals, 2022, vol. 41, pp. 3865–3877.

7. Ogoldkov M.S., Romanenko V.A., Benarieb I., Rudchenko A.S., Grigoryev M.V. Study of industrial semi-finished products from advanced aluminum-lithium alloys for aircraft products. Aviation materials and technologies, 2023, no. 3 (72), pp. 62–77. Available at: http://www.journal.viam.ru (accessed: April 09, 2026). DOI: 10.18577/2713-0193-2023-0-3-62-77.

8. Serebrennikova N.Yu., Nefedova Yu.N., Selivanov A.A., Kovalenko A.V., Ogurtsov P.S., Soloviev V.A. Autoclave molding of lower wing panel skins from 1441 alloy plates. Aviation materials and technologies, 2021, no. 3 (64), pp. 35–44. Available at: http://www.journal.viam.ru (accessed: April 09, 2026). DOI: 10.18577/2713-0193-2021-0-3-35-44.

9. Shpagin A.S., Bazhenov A.R., Antipov K.V., Ogoldkova Yu.S. Study of rheological properties of aluminium-lithium alloy 1441 for computer modeling of metal forming processes. Aviation materials and technologies, 2025, no. 3 (80), pp. 37–46. Available at: http://www.journal.viam.ru (accessed: April 09, 2026). DOI: 10.18577/2713-0193-2025-0-3-37-46.

10. Mondou E., Proietti A., Charvillat C. et al. Understanding the mechanisms of intergranular corrosion in 2024 Al alloy at the polycrystal scale. Corrosion Science, 2023, vol. 221, p. 338.

11. Garchani E.F., Kabiri M.R. Intergranular corrosion and mechanical property evolution in AA2024 alloy through heat treatment. International Journal of Advanced Manufacturing Technology, 2023, vol. 128, pp. 3273–3282.

12. Xiang L., Tao J., Xia X. et al. Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy. Materials, 2023, vol. 16 (6), p. 2396.

13. Xiao X., Zhou Z., Liu C., Cao L. Microstructure and Its Effect on the Intergranular Corrosion Properties of 2024-T3 Aluminum Alloy. Crystals, 2022, vol. 12 (3), p. 395.

14. Adapala P., Avey T., Yuan Y. et al. Understanding the effect of microstructure and composition on localized corrosion susceptibility of 6xxx aluminum alloys. Materials Degradation (Nature), 2024, vol. 8, is. 52, p. 52.

15. Cornejo M., Hentschel T., Koschel D. et al. Intergranular corrosion testing of 6000 aluminum alloys. Materials and Corrosion, 2017, vol. 69, is. 5, pp. 626–633.