Home Journals Articles Updates About
CN
image
收藏切换
Cause analysis of abnormal aging rate of P91 pipe based on EBSD characteristic parameters
收藏切换
Yunfei SUN1, Liming XIE1, Lei LÜ1, Xiaomeng TAN1, Qi WANG2
Pressure Vessel Technology | 2026, 43(1) : 67 - 76
Less
收藏切换
Pressure Vessel Technology | 2026, 43(1): 67-76
• Safety Analysis •
Cause analysis of abnormal aging rate of P91 pipe based on EBSD characteristic parameters
Full
Yunfei SUN1, Liming XIE1, Lei LÜ1, Xiaomeng TAN1, Qi WANG2
Affiliations
  • 1Inner Mongolia Electric Power Research Institute Branch，Inner Mongolia Electric Power （Group） Co.，Ltd.， Hohhot 010020，China
  • 2School of Chemical Safety，University of Emergency Management，Langfang 065201，China
Published: 2026-01-30 doi: 10.3969/j.issn.1001-4837.2026.01.008
Outline
收藏切换

To address the problem of premature aging failure of some domestic P91 pipes in process industry due to excessive aging rates under high‑temperature and high‑pressure environments，a scheme is proposed to identify abnormal aging rates based on the distribution state of grain boundary misorientation angles from electron backscatter diffraction（EBSD） testing.The results indicate that high‑mobility high‑angle grain boundaries generated when the high‑temperature tempering temperature exceeds the actual heating phase equilibrium temperature Ac1 are one of the causes of abnormal aging rates in P91.When such abnormal aging rates occur，abnormal “spikes” appear near 30° and 45° on the EBSD grain boundary misorientation angle distribution map.Based on the above characteristics，the problem of abnormal aging rates in P91 caused by excessively high high‑temperature tempering temperatures can be identified.This study provides a reference for improving the manufacturing quality inspection of P91 pipes and avoiding premature aging failure.

P91 pipe  /  aging damage  /  high‑temperature tempering  /  electron backscatter diffraction
孙云飞, 谢利明, 吕磊, 谭晓蒙, 王琪. 基于EBSD特征参量的P91管道老化速率异常致因分析. 压力容器, 2026 , 43 (1) : 67 -76 . DOI: 10.3969/j.issn.1001-4837.2026.01.008
Yunfei SUN, Liming XIE, Lei LÜ, Xiaomeng TAN, Qi WANG. Cause analysis of abnormal aging rate of P91 pipe based on EBSD characteristic parameters[J]. Pressure Vessel Technology, 2026 , 43 (1) : 67 -76 . DOI: 10.3969/j.issn.1001-4837.2026.01.008
Appendix
Less
Year 2026 volume 43 Issue 1
97
37
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.1001-4837.2026.01.008
  • Receive Date：2025-10-23
  • Online Date：2026-10-23
  • Published：2026-01-30
Article Data
Affiliations
History
  • Received：2025-10-23
  • Revised：2025-12-27
Affiliations
    1Inner Mongolia Electric Power Research Institute Branch，Inner Mongolia Electric Power （Group） Co.，Ltd.， Hohhot 010020，China
    2School of Chemical Safety，University of Emergency Management，Langfang 065201，China
References
Share
https://castjournals.cast.org.cn/joweb/ylrq/EN/10.3969/j.issn.1001-4837.2026.01.008
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House