Microstructure morphology and aging characteristics of 9% Cr martensitic heat-resistant steel after service

被引：0
|
作者：
Kun, Zhang [1 ]
Wenhe, Cai [2 ]
Zhichun, Wang [3 ]
Chen, Xin [1 ]
Shu, Fengyuan [4 ]
Yang, Shi [5 ]
Wang, Jianwei [5 ]
Weili, Li [2 ]
Xin, Zhang [6 ]
机构：
[1] China Nuclear Energy Technology Co., Ltd., Beijing,100193, China
[2] North China Electric Power Test and Research Institute, China Datang Group General Institute of Science and Technology Co., Ltd., Beijing,100040, China
[3] North China Electric Power Research Institute Co., Ltd., Beijing,100096, China
[4] School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai,519082, China
[5] China Fire and Rescue Institute, Beijing,102202, China
[6] Science and Technology Research Institute, State Power Investment Corporation, Beijing,102209, China
来源：
Materials Science-Poland | 2024年 / 42卷 / 04期
关键词：
9% cr martensitic heat-resistant steel - 9% Cr steel - After-service - Aging characteristics - Aging mechanism - Evaluation methods - Martensitic heat resistant steel - Microstructure morphologies - Microstructures and mechanical properties - Strengthening mechanisms;
D O I：
10.2478/msp-2024-0044
中图分类号：
学科分类号：
摘要：
Herein, based on the strengthening mechanism and aging mechanism of 9% Cr steel, changes in the microstructure and mechanical properties during long-term high-temperature service are analyzed. The limitations of current microstructure observation in the aging rating process and the defects of the aging evaluation system are expounded. It is proposed that the aging evaluation of 9% Cr martensitic heat-resistant steel can distinguish between the abnormal microstructure and the aging phenomenon occurring during long-term operation, and the combination of higher resolution microscopy observation such as laser confocal scanning microscopy with mechanical property tests could provide a comprehensive judgement. © 2024 the Zhang Kun et al.
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页码：50 / 65
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