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Stress Corrosion Cracking Susceptibility of LD10 Aluminum Alloy |
CHANG Xinlong, LIU Wanlei, LAI Jianwei, ZHANG Xiaojun |
The Second Artillery Engineering University of PLA, Xi’an 710025, China |
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Abstract The stress corrosion cracking (SCC) of the LD10 alloy with pro-cracked double cantilever beam (DCB) in 3.5%NaCl, N2O4, unsymmetric dimethyl hydrazine (UDMH) and H2O solutions was investigated by the method of stress corrosion tests. The crack growth rate and the threshold stress intensity factors were obtained. The fracture surface of the samples was observed by SEM. The results showed that the corrosion of the LD10 alloy was the most serious in 3.5%NaCl solution, secondary in N2O4 solution, and the lightest in UDMH and H2O solution.
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[1] Wang Y H, Chen H J. Stress corrosion and preventive measures of launch vehicle pipeline [J]. Missies Space Vehicles, 2005, (1): 44-49 (王英浩, 陈浩俊. 火箭管路的应力腐蚀及其预防措施 [J]. 导弹与航天运载技术, 2005, (1): 44-49) [2] Zhang X Y, Sun Z H, Liu M H, et al. Influence of different environments on stress corrosion cracking of high strength aluminum alloys [J]. J. Chin. Soc. Corros. Prot., 2007, 27(6): 354-362 (张晓云, 孙志华, 刘明辉等. 环境对高强度铝合金应力腐蚀行为的影响 [J]. 中国腐蚀与防护学报, 2007, 27(6): 354-362) [3] Yan Y G, Ma L, Zeng H J, et al. Stress cracking corrosion of 7A52 aluminum alloy [J]. Corros. Sci. Prot. Technol., 2009, 21(2): 119-121 (阎永贵, 马力, 曾红杰等. 7A52铝合金的应力腐蚀性能研究 [J]. 腐蚀科学与防护技术, 2009, 21(2): 119-121) [4] Wang H, Lv G Z, Zhang Y H. Corrosion damage evolution model of aluminum alloy [J]. Acta Aeronaut. Astronaut. Sin., 2007, 28(6): 1355-1358 (王慧, 吕国志, 张有宏. 铝合金腐蚀损伤演化数学模型 [J]. 航空学报, 2007, 28(6): 1355-1358) [5] Wu Y S, Jiang Y L, Chu H, et al. SCC susceptibility of the titanium alloy TA7 in alcohols solution [J]. J. Univ. Sci. Technol. Beijing, 2005, 25(1): 40-43 (吴荫顺, 姜应律, 褚洪等. 钛合金TA7在醇溶液中的应力腐蚀敏感性 [J]. 北京科技大学学报, 2005, 25(1): 40-43) [6] Huang K Y. Corrosion and corrosion inhibitors for aluminum and aluminum alloys in nitric acid solution [J]. Chem. Clean., 1999, 15(2): 32-36 (黄魁元. 铝及铝合金在硝酸溶液中的腐蚀及缓蚀剂 [J]. 化学清洗, 1999, 15(2): 32-36) [7] Liu J H, Li D, Zhang P F. Effect of hydrogen on stress corrosion cracking of LC4 aluminum alloy [J]. J. Chin. Soc. Corros. Prot., 2002, 22(5): 308-310 (刘继华, 李荻, 张佩芬. 氢对LC4高强铝合金应力腐蚀断裂的影响 [J]. 中国腐蚀与防护学报, 2002, 22(5): 308-310) [8] GB/T 15970.6-2007, Corrosion of metals and alloys [S] (GB/T 15970.6-2007,金属和合金的腐蚀 [S]) [9] Aviation Research Institute of China. The Manual of Stress Intensity Factor [M]. Beijing: Science Press, 1981 (中国航空研究院. 应力强度因子手册 [M]. 北京: 科学出版社, 1981)
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