刘睿,邹勇,张忠文,杜宝帅

• 1:山东大学材料液固结构演变与加工教育部重点实验室
• 2:国网山东省电力公司电力科学研究院

摘要(Abstract)：

利用光学显微镜、X射线衍射仪、扫描电镜及能谱仪和冲击试验研究了运行了8000 h的1000 MW超超临界机组主蒸汽管道P92钢的显微组织和韧性。结果表明,主蒸汽管道P92钢在600℃服役8000 h后,显微组织呈现大量析出相分布于马氏体基体之上的形貌,析出相除了供货状态(正火+高温回火)存在的MX相以及M23C6相之外,还有时效后在原奥氏体晶界和马氏体板条界处产生的Laves相;运行8000 h后,P92钢的韧性明显地下降,这主要与Laves相的析出和粗化有关。

关键词(KeyWords)： 超超临界机组;P92钢;显微组织;韧性;laves相

Abstract:

Keywords:

基金项目(Foundation): 山东省科技攻关项目(2008GG30001017)

作者(Author): 刘睿,邹勇,张忠文,杜宝帅

DOI: 10.13289/j.issn.1009-6264.2014.09.023

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