赵君,钟万里,王伟,高岩

• 1:华南理工大学材料科学与工程学院
• 2:广东电网公司电力科学研究院

摘要(Abstract)：

通过电解萃取的方法获取了不同服役时间T91钢中的碳化物粒子,利用SEM、XRD、EDS对萃取碳化物的物相、含量、形态及成分进行了分析,讨论了T91钢中碳化物随服役时间的演变规律。研究结果表明,T91钢中碳化物主要有两种:M23C6和MC,其中M23C6占绝大多数。随着服役时间延长,碳化物会发生如下变化:尺寸上,M23C6逐渐沿晶界粗化,MC则相对稳定,运行105296 h后仍未见粗化和增多;形态上,初始的棒状碳化物逐渐开始球化;成分上,Mo、Cr、V由基体逐渐向M23C6中扩散迁移,使得碳化物中Mo、Cr、V增加,Fe含量减少。

关键词(KeyWords)： T91;碳化物;电解萃取;演化规律

Abstract:

Keywords:

基金项目(Foundation): 广东省科技计划项目(2010B010900034)的资助

作者(Author): 赵君,钟万里,王伟,高岩

DOI: 10.13289/j.issn.1009-6264.2013.01.016

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