精品文档---下载后可任意编辑690/600 合金微观结构对应力腐蚀的影响--冷加工和焊接的作用的开题报告题目：690/600 合金微观结构对应力腐蚀的影响--冷加工和焊接的作用摘要：690/600 合金在海水中具有较好的抗腐蚀性能，但在高温高压环境下，其微观结构会发生变化，导致应力腐蚀裂纹的产生。本文将讨论690/600 合金的微观结构、冷加工和焊接对抗应力腐蚀的影响。通过对冷加工的合金进行 XRD、SEM 等分析，讨论冷加工对合金微观结构的影响，同时通过腐蚀试验，分析冷加工对合金抗应力腐蚀的影响。讨论焊接对合金微观结构的影响，并通过焊接接头的拉伸试验、腐蚀试验等方法进行测试，分析焊接对合金抗应力腐蚀裂纹的影响。最后，综合分析得出结论。关键词：690/600 合金；微观结构；应力腐蚀；冷加工；焊接Abstract：690/600 alloy has good corrosion resistance in seawater, but its microstructure changes under high temperature and high pressure environment, resulting in stress corrosion cracking. This paper will study the influence of microstructure, cold working and welding on stress corrosion resistance of 690/600 alloy. Through XRD, SEM and other analysis of cold-worked alloys, the influence of cold working on the microstructure of the alloy is studied, and the influence of cold working on the stress corrosion resistance of the alloy is analyzed through corrosion tests. The influence of welding on the microstructure of the alloy is studied, and the influence of welding on the stress corrosion cracking resistance of the alloy is analyzed through tensile tests and corrosion tests of weld joints. Finally, the conclusions are drawn based on the comprehensive analyses.Keywords: 690/600 alloy; microstructure; stress corrosion; cold working; welding.
