一、前言应力腐蚀破裂在机械设备失效中占有较大比例。正确评定材料的抗应力腐蚀性能,正确选材和提高产品质量具有重要意义。但目前这方面的研究尚未系统地开展。国内外已有的应力腐蚀试验标准也不够完善,不一定能充分反映材料的实际性能。因此,有必要对应力腐蚀试验方法评定指标和选用原则作进一步的研究。研究应力腐蚀的试验方法可按加载形式 First, the preface Stress corrosion cracking in the failure of machinery and equipment occupy a large proportion. Correct assessment of the material stress corrosion resistance, the correct selection and improve product quality is of great significance. However, the research in this area has not been carried out systematically yet. The existing stress corrosion test standards at home and abroad are not perfect enough, may not fully reflect the actual performance of the material. Therefore, it is necessary to further study the evaluation index and selection principle of stress corrosion test. Test methods to study stress corrosion may be in the form of loading