Interplay of Microbiological Corrosion and Alloy Microstructure in Failures of Advanced Stainless Steels and their Weldments in Marine Environments

海洋环境中先进不锈钢及其焊件失效中微生物腐蚀和合金微观结构的相互作用

• 批准号: LP0347670
• 负责人: Prof Raman Singh
• 金额: $ 7.04万
• 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: 2004-04-30 至 2008-01-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0347670
• 关键词: Interplay; Microbiological; Corrosion; Alloy; Microstructure

The proposed research program investigates the role of microbiologically-induced corrosion (MIC) on stress corrosion cracking (SCC) of weldments of advanced stainless steels (SS). Extensive premature SCC failures of SS weldments have lately become increasingly significant in Australian marine industry, following the inability of advanced SCC-resistant SS to alleviate failures. Inconsistencies in SCC data call for an improved understanding of the role of MIC on SCC, particularly because recent failure analyses have indicated a profound role of microbiological activity on localised corrosion (viz., pitting) of stainless steels and their weldments, as well as because pitting is known to facilitate SCC initiation.

建议的研究计划调查的作用微生物引起的腐蚀（MIC）的应力腐蚀开裂（SCC）的焊接件的先进不锈钢（SS）。SS焊接件的广泛的过早SCC失效最近在澳大利亚海洋工业中变得越来越重要，因为先进的抗SCC SS无法减轻失效。 SCC数据的增加要求更好地理解MIC对SCC的作用，特别是因为最近的失效分析表明微生物活性对局部腐蚀的重要作用（即，点蚀），以及因为点蚀是已知的，以促进SCC的开始。