文献类型：期刊文献

中文题名：燃烧器喷嘴材料热疲劳性能和高温氧化性能研究

英文题名：Study on High Temperature Oxidation and Thermal Fatigue Property of Materials Used in the Jet of the Burner

作者：马刘宝[1];黄志荣[1]

机构：[1]华东理工大学化工机械研究所,上海200237

年份：2004

卷号：25

期号：2

起止页码：110

中文期刊名：郑州大学学报（工学版）

外文期刊名：Journal of Zhengzhou University（Engineering Science）

收录：CSTPCD

语种：中文

中文关键词：燃烧器;喷嘴材料;热疲劳;高温氧化;裂纹;燃煤锅炉

外文关键词：the jet of the burner; thermal fatigue; crack propagation; high temperature oxidation

摘要：采用对比试验方法,通过热疲劳裂纹扩展速率和氧化增重试验,研究了燃煤锅炉燃烧器喷嘴常用的两种材料的热疲劳性能和高温氧化性能,结果表明,铬、锰、硅等元素含量高的新材料ZG40Cr26Ni4Mn3NRe的热疲劳性能和抗高温氧化性能均明显优于原燃烧器喷嘴材料ZG40Cr20Ni5.材料的抗热疲劳性能在很大程度上取决于材料的抗高温氧化性能,热疲劳裂纹在表面缺陷处最易出现,热循环过程中氧化膜的形成和破裂加剧了热疲劳裂纹的萌生和扩展.
　In this paper, high temperature oxidation property and thermal fatigue property of ZG40Cr26Ni4Mn3NRe and ZG40Cr20Ni5 heat-resistant steels usually used in jet of the burner were studied through reference experiment in order to assess applicability of ZG40Cr26Ni4Mn3Nre and failure mechanism. The results indicate that thermal fatigue property and high temperature oxidation of ZG40Cr26Ni4Mn3Nre are much better than ZG40Cr20Ni5 because content of Cr,Mn,Si in the former steel are higher than that of the latter and thermal fatigue property of the materials depends on high temperature oxidation to a great extent. Thermal fatigue crack initiates most possibly from surface defects,and also the engendering and breaking of oxidation film during the process of thermal stress cycle result in fatigue crack initiation and propagation.