含缺陷在役P92蒸汽管道与时间相关的失效评定曲线及缺陷评定

doi:10.11930/j.issn.1004-9649.2016.05.067.05

中国电力 ›› 2016, Vol. 49 ›› Issue (5): 67-71.DOI: 10.11930/j.issn.1004-9649.2016.05.067.05

含缺陷在役P92蒸汽管道与时间相关的失效评定曲线及缺陷评定

刘毅¹，张国栋²，赵彦芬²，李建¹，周昌玉¹

1.南京工业大学机械与动力工程学院，江苏南京211816；
2.苏州热工研究院，江苏苏州215004

收稿日期:2015-09-10 出版日期:2016-05-16 发布日期:2016-05-16
作者简介:刘毅（1990—），男，江苏如皋人，硕士研究生，从事P92焊接接头高温蠕变疲劳裂纹扩展行为研究。E-mail: 294998312@qq.com

The Time Dependent Failure Assessment Diagram and Defect Assessment of in-Service P92 Steam Pipe Containing Defects

LIU Yi¹, ZHANG Guodong², ZHAO Yanfen², LI Jian¹, ZHOU Changyu¹

1. School of Mechanical and Power Engineering Nanjing University of Technology, Nanjing 211816, China;
2. Suzhou Nuclear Power Research Institute, Suzhou 215004, China

Received:2015-09-10 Online:2016-05-16 Published:2016-05-16

摘要/Abstract

摘要： 基于服役30 000 h P92焊接接头610 ℃下高温短时力学性能试验和蠕变试验，获得了材料的稳态蠕变速率公式，并得到了相应的等时应力应变曲线。在此基础上建立了P92焊接接头时间相关失效评定图（TDFAD）。基于TDFAD分析讨论了不同应力水平下P92蒸汽管道环向外表面裂纹临界尺寸。研究发现：在较大裂纹尺寸与较低应力水平下，裂纹临界尺寸受时间影响显著；而在较大应力水平下，通用失效评定曲线（R6 option 1）与时间相关失效评定曲线（TDFAC）所确定的临界尺寸无明显差别。对长期服役于高温工况下的蒸汽管道使用TDFAC进行缺陷评定才能获得更安全的评定结果。

关键词: 超超临界火电机组, P92焊接接头, 时间相关失效评定曲线, 裂纹临界尺寸

Abstract: Based on the high-temperature short-time mechanics test at 610 ℃ and the creep tensile test conducted on the 30 000-h P92 welded joint, the isochronous stress-strain curve and the steady-state creep rate formula are obtained. Then, the time dependent failure assessment diagram(TDFAD) is drawn. By adopting the TDFAD, the critical crack sizes of P92 steam pipe under different stresses are analyzed. The results show that the critical crack size is affected by the time significantly when the crack sizes are large and the stresses are low. The critical crack size determined by the currency failure assessment curve(R6 option 1) and TDFAC has no significant difference under high stresses. Using TDFAD for the defect assessment of the equipment serving long under high-temperature conditions can obtain safer and more conservative assessment results.

Key words: supercritical thermal power generation unit, P92 welded joint, time dependent failure assessment diagram, critical crack size

中图分类号:

刘毅，张国栋，赵彦芬，李建，周昌玉. 含缺陷在役P92蒸汽管道与时间相关的失效评定曲线及缺陷评定[J]. 中国电力, 2016, 49(5): 67-71.

LIU Yi, ZHANG Guodong, ZHAO Yanfen, LI Jian, ZHOU Changyu. The Time Dependent Failure Assessment Diagram and Defect Assessment of in-Service P92 Steam Pipe Containing Defects[J]. Electric Power, 2016, 49(5): 67-71.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.05.067.05

https://www.electricpower.com.cn/CN/Y2016/V49/I5/67

参考文献

[1] 张国栋，赵彦芬，薛飞，等. P91钢蠕变-疲劳交互作用应变特征与寿命预测[J]. 中国电力，２０１１，４４（１０）：５４－５９．
ZHANG Guodong, ZHAO Yanfen, XUE Fei, et al. Strain characteristics and life prediction of P91 steel under creep- fatigue interaction conditions[J]. Electric Power, 2011, 44(10): 54-59.
[2] 张国栋，薛飞. P91钢蠕变-疲劳交互作用下断裂特性研究[J]. 机械强度，２０１２，３４（６）：８８６－８９１．
ZHANG Guodong, XUE Fei. Fracture characteristics of P91 steel under creep-fatigue interaction conditions[J]. Journal of Mechanical Strength, 2012, 34(6): 886-891.
[3] 周荣灿，范长信．超超临界火电机组材料研究及选材分析[J]．中国电力，２００５，３８（８）：４１－４７．
ZHOU Rongcan, FAN Changxin. Ultra supercritical thermal power unit material research and material analysis[J]. Electric Power, 2005, 38(8): 41-47.
[4] Czyrska-Filemonowicz A. Modified 9%Cr steels for advanced power generation: microstructure and properties[J]． Journal of Achievements in Materials and Manufacturing Engineering, 2006, 19(2): 43-48．
[5] 轩福贞，涂善东，王正东，等. 高温含缺陷结构与时间相关的失效评定图[J]. 核动力工程，２００３，２４（６）：５０８－５１２．
XUAN Fuzhen, TU Shandong, WANG Zhengdong, et al. High temperature structure containing defects and time dependent failure assessment diagram [J]. Nuclear Power Engineering, 2003, 24(6): 508-512.
[6] R5. Assessment procedure for the high temperature response of structures[S]. Procedure R5, Issue 2. Gloucester, UK: Nuclear Electric Ltd, 1997.
[7] British Standards BS 7910: 1999. Guide to methods of assessing the acceptability of flaws in fusion welded structures [S]. London: BSI, 1999.
[8] DRUBAY B, MOULIN D, FAIDY C, et al. Defect assessment procedure: a French approach[J]. ASME PVP, 1993, 266: 113-118.
[9] ASME section III-Class I Components in elevated temperature service [S]. Code Case N47-29. New York: ASME, 1990.
[10] EWALD J, SHENG S, KLENK A, et al. Engineering guide to assessment of creep crack initiation on components by two- criteria-diagram[J]. International Journal of Pressure Vessels and Piping, 2001, 78(11-12): 937-949.
[11] 轩福贞，涂善东，王正东，等. 高温环境下在用压力容器检测与安全评估技术研究进展（ＩＩ）评估方法[J]. 压力容器，２００２，１９（１０）：1-5，12，20.
XUAN Fuzhen, TU Shandong, WANG Zhengdong, et al. Technical progress of safety assessment and non-destructive measurement for pressure vessel at high temperature(Ⅱ)-Integrity Assessment Approaches[J]. Pressure Vessel Technology, 2002, 19(10): 1-5, 12, 20.
[12] 涂善东，轩福贞，王卫泽. 高温蠕变与断裂评价的若干关键问题[J]. 金属学报，２００９，４５（７）：７８１－７８７．
TU Shandong, XUAN Fuzhen, WANG Weize. Some critical issues in creep and fracture assessment at high temperature[J]. Acta Metallurgica Sinica, 2009, 45(7): 781-787.
[13] R6. Assessment of the integrity of structures containing defects[S]. Procedure R6-Revision 4, Gloucester, UK: Nuclear Electric Ltd, 2000.

含缺陷在役P92蒸汽管道与时间相关的失效评定曲线及缺陷评定

The Time Dependent Failure Assessment Diagram and Defect Assessment of in-Service P92 Steam Pipe Containing Defects

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

模态框（Modal）标题

含缺陷在役P92蒸汽管道与时间相关的失效评定曲线及缺陷评定

The Time Dependent Failure Assessment Diagram and Defect Assessment of in-Service P92 Steam Pipe Containing Defects

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics