Improvement in Stress Corrosion Cracking Resistance of Stainless Steels in Environments Conducive to Localized Pitting Damage

提高不锈钢在有利于局部点蚀损伤的环境中的抗应力腐蚀开裂性能

• 批准号: LP0349370
• 负责人: Prof Raman Singh
• 金额: $ 11.07万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-04-01 至 2010-01-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0349370
• 关键词: Improvement; Stress; Corrosion; Cracking; Resistance

Stress corrosion cracking (SCC) represents a serious threat to infrastructure exposed to chloride and caustic environments. The proposed project will characterize the chloride-SCC crack propagation parameters for a super duplex stainless steel, which is the material of construction for vessels for stripping vinyl chloride monomer in a PVC processing plant. Alarmingly high numbers the welds (nearly 50%) in the vessel had suffered extensive pitting (which is a well-known SCC initiator) and SCC cracking. For the mitigation measures, the project will also investigate pitting and SCC susceptibility of weldments of alternative varieties of stainless steels, such as Zeron 100.

应力腐蚀开裂（SCC）对暴露于氯化物和腐蚀性环境的基础设施构成严重威胁。拟议项目将表征超级双相不锈钢的氯化物-SCC裂纹扩展参数，该不锈钢是PVC加工厂中用于汽提氯乙烯单体的容器的构造材料。令人担忧的是，容器中的焊缝（近50%）出现了大量点蚀（这是众所周知的SCC引发剂）和SCC裂纹。对于缓解措施，该项目还将调查不锈钢替代品种（如Zeron 100）焊接件的点蚀和SCC敏感性。