应力腐蚀破裂是对金属危害最大的腐蚀形态之一,研究应力腐蚀破裂的控制途径无疑是具有重大意义的。应力腐蚀破裂是一个与金属的冶金因素,受力状态与环境条件相关的过程。因此,控制应力腐蚀的基本途径有三条:一是改变合金的成分与组织;二是改变材料的受力状态;三是改变材料所处的环境条件。改变材料所处的环境条件的方法有三种:一是改变介质的温度与把某些易引起应力腐蚀的杂质降低到临界值以下。二是采用 Stress corrosion cracking is one of the most damaging forms of metal corrosion. It is undoubtedly of great significance to study the control of stress corrosion cracking. Stress corrosion cracking is a process that is related to metallurgical factors, stress conditions and environmental conditions. Therefore, there are three basic ways to control stress corrosion: one is to change the composition and organization of the alloy; the other is to change the stress state of the material; the third is to change the environmental conditions in which the material is located. There are three ways to change the environmental conditions of the material: one is to change the temperature of the medium and reduce some of the impurities that cause stress corrosion to below the critical value. The second is adopted