王伟,黄翔,蔡永江,李文胜,高岩

• 1:广东电网有限责任公司电力科学研究院
• 2:华南理工大学材料科学与工程学院
• 3:广东红海湾发电有限公司

摘要(Abstract)：

利用光学显微镜、扫描电子显微镜、能谱分析仪、X-射线衍射仪、拉伸试验机和电化学工作站等研究了服役36891 h的Super304H过热器管的组织及性能变化。结果表明,服役36891 h管的强度仍满足GB/T 5310-2008的规定,伸长率略低于标准。服役管基体组织为奥氏体和孪晶组织,晶粒粗大,晶界大量析出呈链状分布M23C6。经DL-EPR分析,服役36891 h管的晶间腐蚀敏感性较供货态新管显著升高。

关键词(KeyWords)： Super304H;高温运行;组织;力学性能;晶间腐蚀敏感性

Abstract:

Keywords:

基金项目(Foundation): 南方电网公司科技项目(K-GD2014-162);; 国家自然科学基金(51471072)

作者(Author): 王伟,黄翔,蔡永江,李文胜,高岩

DOI: 10.13289/j.issn.1009-6264.2015.10.015

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