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Through-thickness creep damage in a service-exposed header of 2.25Cr1 Mo steel

 

作者: WuRui,   SandströmRolf,   StoresundJan,  

 

期刊: Materials at High Temperatures  （Taylor Available online 1992）
卷期: Volume 10, issue 3  

页码: 154-163

 

ISSN:0960-3409

 

年代: 1992

 

DOI:10.1080/09603409.1992.11689413

 

出版商: Taylor&Francis

 

关键词: creep damage;low alloy steel;microstructure;welded joint;modelling;replica technique

 

数据来源: Taylor

 

摘要:

A creep damage investigation was made on a service-exposed header of 2.25Cr 1Mo steel with a service time of 200 000 h. Weldments and the flanged parts at both outer and inner surfaces were studied as well as the damage in the through-thickness direction. Extensive cavitation was observed not only at the outer surface, but also well inside the component in the weldments. A model for the prediction of rupture position is introduced to explain the appearance of the observed creep damage.

 

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