孙敏,马天军

• 1:宝钢股份研究院

摘要(Abstract)：

采用硝酸浸泡法、电化学快速评价DL-EPR方法研究了组织演变对耐蚀合金UNS N08825耐晶间腐蚀性能的影响,以及析出相的数量及分布和析出相的回溶对其腐蚀速率的影响,并借助光学显微镜、扫描电镜分析了析出相的组织成分和试验后的腐蚀形貌。结果表明:UNS N08825合金的析出相主要以M_(23)C_6型碳化物为主,晶界上析出碳化物是其耐晶间腐蚀性能降低的主要因素;固溶处理能有效修复UNS N08825合金晶界贫Cr区,改善其耐晶间腐蚀性能。另外,电化学快速评价DL-EPR方法与传统的硝酸浸泡法的趋势一致,是一种有效的评价方法。

关键词(KeyWords)： UNS N08825耐蚀合金;晶间腐蚀;组织演变;析出相

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 孙敏,马天军

DOI: 10.13289/j.issn.1009-6264.2018-0303

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