刘鸿国,李生志,熊伟,董显平,单爱党

• 1:华能玉环电厂
• 2:神华福建能源有限责任公司
• 3:上海电气电站设备有限公司汽轮机厂
• 4:上海交通大学材料科学与工程学院

摘要(Abstract)：

为研究马氏体耐热钢中的Laves相析出行为及对蠕变强度影响,利用透射电镜对全马氏体组织和含少量高温δ铁素体的马氏体组织中的Laves相进行观察与分析,研究不同组织中Laves的析出行为以及蠕变温度与应力对Laves相形貌和尺寸的影响。结果表明:在全马氏体组织中,观察到Laves相有两种形核机制,一种是在晶界上单独形核并长大,另一种是在毗邻M23C6碳化物处形核并长大;在含高温δ铁素体的马氏体组织中,Laves相则会优先在高温δ铁素体内形核,且温度和应力促进了Laves相的形核和长大。

关键词(KeyWords)： 马氏体耐热钢;Laves相;析出行为;δ铁素体

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重大项目(51034011);; 华能国际科研项目(HNKJ13-G16)

作者(Author): 刘鸿国,李生志,熊伟,董显平,单爱党

DOI: 10.13289/j.issn.1009-6264.2015.09.019

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