高强铝合金应力腐蚀开裂研究进展

Research Progress in Stress Corrosion Cracking of High-strength Aluminum Alloy

综述了应力腐蚀理论的研究现状,其中氢致开裂理论和阳极溶解理论可较好解释高强铝合金的应力腐蚀开裂行为。结合应力腐蚀发生的三个必要条件,讨论了冶金因素、环境因素、应力因素对高强铝合金应力腐蚀敏感性的影响机制与作用结果。同时,介绍了国内外高强铝合金实验室模拟加速与自然环境应力腐蚀试验方法的研究进展、存在的不足及未来研究重点。

The current research status of stress corrosion theories were summarized, of which the hydrogeninduced cracking theory and anodic dissolution theory could better explain the stress corrosion cracking behavior of high-strength aluminum. According to the three necessary conditions for occurrence of stress corrosion cracking, the influencing mechanism of the metallurgy factors, environmental factors and stress factors on the susceptibility of stress corrosion cracking of high-strength aluminum alloy and the action results were discussed. Meanwhile, the research progress of laboratory simulation acceleration and natural environmental stress corrosion testing methods, existing problems and future research priorities were introduced.