Abstract: AA5083 aluminum is widely used in ships and marine equipment owing to its excellent corrosion resistance and high strength. This work investigates the effects of ECAP pass number and Cl- concentration on the corrosion behavior of a 15 vol% FeCoCrNiMo HEA-reinforced AA5083 composite. The results show that after 1—4 ECAP passes, all specimens exhibit pronounced anodic passivation, with pitting as the do-minant corrosion mode. The three-pass condition delivers the best corrosion resistance, as evidenced by the most favorable Ecorr and Icorr. With increasing pass number, grain refinement and solute redistribution mitigate grain-boundary segregation, homogenize the electrochemical response, and strengthen interfacial metallurgical bonding; meanwhile, an appropriate density of dislocations and subgrain boundaries promotes rapid nuc-leation and self-healing of the passive film, thereby improving corrosion resistance. In electrolytes of higher ionic strength, the elevated Cl- concentration becomes the governing factor that aggravates corrosion, leading to a negative shift of Ecorr, an increase in Icorr, and a sharp rise in pitting susceptibility. This behavior is attributed to Cl- induced dissolution of the passive film, enlargement of the effective reaction area, and the intensified galvanic coupling between the Al matrix and the HEA reinforcement. These findings highlight that optimizing the ECAP processing route and controlling Cl- containing environments are critical to enhancing the marine corrosion resistance of this composite.
钱思成, 贺毅强, 郇昌宝, 顾航, 王童, 陶凯, 黄威, 贺晓, 曹颖, 卢翰文. 不同挤压道次FeCoCrNiMo/5083Al基复合材料的腐蚀性能研究[J]. 材料导报, 2026, 40(5): 24120199-6.
QIAN Sicheng, HE Yiqiang, HUAN Changbao, GU Hang, WANG Tong, TAO Kai, HUANG Wei, HE Xiao, CAO Ying, LU Hanwen. Study on the Corrosion Performance of FeCoCrNiMo/5083Al Matrix Composites with Different Extrusion Passes. Materials Reports, 2026, 40(5): 24120199-6.
1 Jaume J, Marques M, Délia M L, et al. Corrosion Science, 2022, 194, 109934. 2 Su T, Zhao Y J, Hu Z L, et al. Nonferrous Metals Engineering, 2020, 10(7), 32 (in Chinese). 苏天, 赵艳君, 胡治流, 等. 有色金属工程, 2020, 10(7), 32. 3 Aballe A, Bethencourt M, Botana F, et al. Corrosion Science, 2001, 43(9), 1657. 4 Ezuber H, El H A, El S F. Materials & Design, 2008, 29(4), 801. 5 Gimenez P, Rameau J, Reboul M. Corrosion, 1981, 37(12), 673. 6 Ananiadis E, Argyris K T, Matikas T E, et al. Applied Sciences, 2021, 11 (3), 1300. 7 Bogdanov R, Vorkel V, Ignatenko V, et al. Materials Chemistry and Physics, 2023, 295, 127123. 8 Wang N, Wu B, Wu W, et al. Materials Today Communications, 2020, 25, 101366. 9 Segal V. Materials Science and Engineering: A, 1999, 271(1-2), 322. 10 Estrin Y, Vinogradov A. Acta Materialia, 2013, 61(3), 782. 11 Singh N, Agrawal M K. Results in Engineering, 2024, 22, 102221. 12 Abd E A M I. Journal of Materials Research and Technology, 2020, 9 (6), 12525. 13 Deng C, Wang T, Wu P, et al. Nano Energy, 2023, 120, 109153. 14 Quanbing L, Zongde L, Shengyang G, et al. Journal of Chinese Society for Corrosion and Protection, 2021, 41(6), 883. 15 Yang Y, Zhou W, Tong Z, et al. Journal of Materials Engineering and Performance, 2019, 28(9), 6081. 16 Dai C, Zhao T, Du C, et al. Journal of Materials Science & Technology, 2020, 46(5), 64. 17 Jin L L, Tong X L, Chen W. Materials Letters, 2016, 171(13), 38. 18 Tobler W, Virtanen S. Corrosion Science, 2006, 48 (7), 1585. 19 Esquivel J, Murdoch H, Darling K, et al. Materials Research Letters, 2018, 6 (1), 79. 20 Mishra S, Beura V K, Singh A, et al. Materials Science and Enginee-ring: A, 2018, 729, 102. 21 Glenn A M, Hughes A E, Torpy A, et al. Surface and Interface Analysis, 2016, 48 (8), 780. 22 Duarte M J, Klemm J, Klemm S O, et al. Science, 2013, 341 (6144), 372. 23 Xiao D, Zhou P, Wu W, et al. Materials & Design, 2017, 116, 438. 24 Gollapudi S. Corrosion Science, 2012, 62, 90. 25 Rybal C O, Martynenko N, Anisimova N Y, et al. Russian Metallurgy (Metally), 202, 2022 (11), 1386. 26 Balyanov A, Kutnyakova J, Amirkhanova N, et al. Scripta Materialia, 2004, 51(3), 225. 27 Derakhshandeh M, Farvizi M, Javaheri M. Journal of Solid State Electrochemistry, 2021, 25(1), 279. 28 Xia D H, Ji Y, Zhang R, et al. Corrosion Science, 2023, 213, 110985. 29 Munoz A, Saidman S, Bessone J. Corrosion Science, 2002, 44(10), 2171. 30 Shi Y, Collins L, Balke N, et al. Applied Surface Science, 2018, 439, 533. 31 Sugimoto K, Sawada Y. Corrosion Science, 1977, 17(5), 425. 32 Wang C J, Chen Q J, Xia H X. Transactions of Nonferrous Metals Society of China, 2017, 27(12), 2663. 33 Zaid B, Saidi D, Benzaid A, et al. Corrosion Science, 2008, 50(7), 1841. 34 Li T, Li X G, Dong C F, et al. Chinese Journal of Engineering, 2009, 31(12), 1576. 35 Szklarska S Z. Corrosion Science, 1992, 33(8), 1193.