应力腐蚀破裂是金属在应力和腐蚀介质共同作用下引起的一种破坏形式。最初人们并没有把这种破裂现象同腐蚀过程、特别是电化学腐蚀过程联系起来,直到1918年Bassett才指出这种破裂和腐蚀的关系,提出了“腐蚀破裂”的概念。由于大多数应力腐蚀属于电化学腐蚀,因此可以用电化学的理论和方法来分析、研究和控制应力腐蚀破裂。最早由Dix提出的“活性通道”理论 Stress corrosion cracking is a form of failure caused by the combined action of stress and corrosion media. Initially, this phenomenon of rupture was not associated with the corrosion process, especially the electrochemical corrosion process. It was not until Bassett pointed out the relationship between rupture and corrosion in 1918, and proposed the concept of “corrosion rupture.” Since most stress corrosion is electrochemical, it is possible to analyze, study and control stress corrosion cracking using electrochemical theory and methods. Originally proposed by Dix “Active Channel ” theory