LD10铝合金应力腐蚀性能的研究  

Stress Corrosion Cracking Susceptibility of LD10 Aluminum Alloy

作　　者：常新龙[1] 刘万雷 赖建伟[1] 张晓军[1] 

机构地区：[1]第二炮兵工程大学,西安710025

出　　处：《中国腐蚀与防护学报》2013年第4期347-350,共4页Journal of Chinese Society For Corrosion and Protection

摘　　要：采用预制疲劳裂纹的双悬臂梁(DCB)试样进行LD10铝合金的应力腐蚀实验,测得了LD10铝合金在3.5%NaCl溶液、N2O4、偏二甲肼和纯水中的裂纹扩展速率da/dt以及临界应力腐蚀强度因子KISCC。通过断口形貌分析了LD10铝合金在不同介质中的应力腐蚀机理。结果表明,LD10铝合金在3.5%NaCl溶液中腐蚀最为严重,在N2O4中次之,在偏二甲肼和纯水中最轻。The stress corrosion cracking （SCC） of the LD10 alloy with pro-cracked double cantilever beam （DCB） in 3.5%NaC1, N204, unsymmetric dimethyl hydrazine （UDMH） and H20 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% NaC1 solution, secondary in N204 solution, and the lightest in UDMH and H^O solution.

关 键 词：LD10铝合金 应力腐蚀 腐蚀机理 

分 类 号：TG139.6[一般工业技术—材料科学与工程]