Abstract: Additive manufacturing (AM) AlSi10Mg alloy demonstrates significant potential in rail transit applications due to its design flexibility and lightweight advantages. Considering that the alloy may be affected by corrosive environments during actual service, this work investigates the effects of pre-corrosion in a 5% NaCl salt spray environment for 0 h, 64 h, 136 h, and 360 h on its microstructure, mechanical properties, and fatigue performance. The results indicate that as the pre-corrosion time increases, pits appear on the surface of the sample and gradually expand, eventually connecting to form larger areas. The pits spread faster along the surface than in depth, and this expansion stabilizes after 276 h. The surface roughness increases with corrosion time, while the hardness decreases. The yield strength, tensile strength, and elastic modulus of the samples are less affected by corrosion time, whereas fatigue performance correlates with both corrosion time and stress level. Fatigue life decreases with increasing corrosion time and stress level. The impact of pre-corrosion time on fatigue life is more pronounced at lower stress levels than at higher ones. Fracture analysis reveals that fatigue cracks initiate at defects near the surface of the samples, and corrosion enhances stress concentration at these defects, promoting crack initiation.
关新龙, 黄勉, 杨冰, 肖守讷. 盐雾预腐蚀对增材制造AlSi10Mg合金疲劳行为影响研究[J]. 材料导报, 2026, 40(9): 25010054-6.
GUAN Xinlong, HUANG Mian, YANG Bing, XIAO Shoune. Study on the Effect of NaCl Spray Pre-corrosion on the Fatigue Behavior of Additive Manufacturing AlSi10Mg Alloy. Materials Reports, 2026, 40(9): 25010054-6.
1 Yang B, Liao Z, Wu S C, et al.Journal of Traffic and Transportation Engineering, 2021, 21(1), 132 (in Chinese). 杨冰, 廖贞, 吴圣川, 等.交通运输工程学报, 2021, 21(1), 132. 2 Huang M, Yang B, Zhou Y W, et al.Journal of Materials Engineering and Performance, 2024, 34(7), 6001. 3 Liang W J, Dong Q S, Zhang X B.Materials Reports, 2025, 39(19), 24100182(in Chinese). 梁文杰, 董强胜, 章晓波.材料导报, 2025, 39(19), 24100182. 4 Zhang Y, Wang B B, Liu C, et al.Materials Reports, 2024, 38(23), 23080239(in Chinese). 张勇, 王斌斌, 刘琛, 等.材料导报, 2024, 38(23), 23080239. 5 Ni X N, Wang A S, Hu Z J, et al.Materials Reports, 2024, 10.11896/cldb.24070044(in Chinese). 倪小南, 王安森, 胡子健, 等.材料导报, 2024, 10.11896/cldb.24070044. 6 Ji C M.Study on mechanical properties and failure mechanism of 2024-T3 aluminum alloy sheet under complex damage conditions.Master’s Thesis, Civil Aviation Universiy of China, China, 2018 (in Chinese). 季春明.复杂损伤作用下2024-T3铝合金板材力学性能及失效机理研究.硕士学位论文, 中国民航大学, 2018. 7 Wu S C, Li C H, Zhang W, et al.Chinese Journal of Solid Mechanics, 2019, 40(6), 489(in Chinese). 吴圣川, 李存海, 张文, 等.固体力学学报, 2019, 40(6), 489. 8 Zhao L Y, Huang J, Chen T, et al.Materials for Mechanical Engineering, 2018, 42(9), 21 (in Chinese). 赵路远, 黄俊, 陈涛, 等.机械工程材料, 2018, 42(9), 21. 9 Wang B W, Chen X M, Su Y L, et al.Acta Aeronautica et Astronautica Sinica, 2021, 42(5), 6 (in Chinese). 王彬文, 陈先民, 苏运来, 等.航空学报, 2021, 42(5), 6. 10 Li H F.Investigation on fracture toughness and crack growth mechanism of high-strength steels.Ph.D.Thesis, University of Science and Technology of China, China, 2019 (in Chinese). 李鹤飞.高强钢断裂韧性与裂纹扩展机制研究.硕士学位论文, 中国科学技术大学, 2019. 11 Ando K, Kim M H, Nam K W.Fatigue & Fracture of Engineering Materials & Structures, 2021, 44(2), 306. 12 Tan N, Sun S L, Hua L, et al.Machinery Design & Manufacture, 2024, 395(1), 107 (in Chinese). 谭娜, 孙世磊, 华磊.机械设计与制造, 2024, 395(1), 107. 13 Fu L, Yang H, Mou J S, et al.Materials Reports, 2025, 39(19), 196(in Chinese). 付磊, 杨航, 牟杰爽, 等.材料导报, 2025, 39(19), 196. 14 Qin C G, Jiang B, Liu N Z, et al.Materials Reports, 2025, 39(9), 24030204 (in Chinese). 秦传广, 姜博, 刘乃志, 等.材料导报, 2025, 39(9), 24030204. 15 Zhang A, Wu W P, Jiang P, et al.Chinese Journal of Lasers, 2024, 51(12), 156 (in Chinese). 张澳, 吴王平, 江鹏, 等.中国激光, 2024, 51(12), 156. 16 Yang S.Research on microstructure and mechanical properties of 316L hybrid manufacturing parts on SLM process.Master’s Thesis, North of University of China, China, 2021 (in Chinese). 杨帅.基于SLM工艺的316L复合成形件微观组织与力学性能研究.硕士学位论文, 中北大学, 2021. 17 Zhu J, Li D, Chang W, et al.Journal of Materials Research and Technology, 2020, 9(4), 8104. 18 Huang H D, Li Z P, Cai X N, et al.Journal of Nanchang Hangkong University: Natural Sciences.2024, 38(2), 30 (in Chinese). 黄浩东, 李志鹏, 蔡熙楠, 等.南昌航空大学学报(自然科学版), 2024, 38(2), 30. 19 Wu Y.Research on corrosion resistance and mechanical mechanical properties of 2024 aluminum alloy.Master’s Thesis, Ningxia University, China, 2022 (in Chinese). 吴妍.2024铝合金耐腐蚀性能与力学性能研究.硕士学位论文, 宁夏大学, 2022. 20 Hou Y, Tian Y, Zhao Z P, et al.Surface Technology, 2022, 51(5), 1 (in Chinese). 侯悦, 田原, 赵志鹏, 等.表面技术, 2022, 51(5), 1. 21 Liu Y, Cao H, Chen S, et al.The Journal of Physical Chemistry C, 2015, 119(45), 25449. 22 Thijs L, Verhaeghe F, Craeghs T, et al.Acta Materialia, 2010, 58(9), 3303.
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2026, Vol. 40 
