Long-Life and High-Reliability Welded Structures

被引：0
|
作者：
Xu L. [1 ,2 ,3 ]
机构：
[1] School of Materials Science and Engineering, Tianjin University, Tianjin
[2] Tianjin Key Laboratory of Advanced Joining Technology, Tianjin
[3] State Key Laboratory of Engines, Tianjin University, Tianjin
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2022年 / 55卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Collaborative improvement; Forming manufacturing; Long life; Reliability; Welded structure;
D O I：
10.11784/tdxbz202104056
中图分类号：
学科分类号：
摘要：
Progress in research on the design and forming manufacturing of modern equipment structures is often challenged by extremely complex environments and requirements of long life and safe service. The weakest points of welded structures are the welded joints. This work proposes a collaborative microstructural control principle to improve the comprehensive performance of welded joints in complex environments by considering the characteristics of thermal power steam pipes, deep-sea oil and gas pipelines, and other energy equipment in the main line. Common problems related to the service safety of main pipelines in extremely complex environments are addressed by examining the material micro-damage mechanism of pipeline failure. Accurate life prediction theory for pipelines with defects is presented, and the corresponding standards are established. Finally, a long-life and high-reliability welded structure design, forming technology, evaluation theory, and technical system that integrates material joint structures is demonstrated. © 2022, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
引用
收藏
页码：1 / 10
页数：9
相关论文
共 67 条
  • [1] Hasegawa Y, Ohgami M, Okamura Y., Creep properties of heat affected zone of weld in W containing 9%-12% chromium creep resistant martensitic steels at elevated temperature, Advanced Heat Resistant Steels for Power Generation, pp. 655-667, (1999)
  • [2] Xu Lianyong, Jing Hongyang, An Junchao, Et al., Creep constitutive relation of P92 steel welded joint, Transactions of the China Welding Institution, 30, 12, pp. 29-32, (2009)
  • [3] Xiao B, Xu L Y, Zhao L, Et al., Tensile mechanical properties, constitutive equations, and fracture mechanisms of a novel 9% chromium tempered martensitic steel at elevated temperatures, Materials Science and Engineering: A, 690, pp. 104-119, (2017)
  • [4] Smith D J, Walker N S, Kimmins S T., Type Ⅳ creep cavity accumulation and failure in steel welds, International Journal of Pressure Vessels and Piping, 80, 6, pp. 617-627, (2003)
  • [5] Albert S K, Matsui M, Watanabe T, Et al., Variation in the type Ⅳ cracking behaviour of a high Cr steel weld with post weld heat treatment, International Journal of Pressure Vessels and Piping, 80, pp. 405-413, (2003)
  • [6] Francis J A, Mazur W, Bhadeshia H K D H., Type Ⅳ cracking in ferritic power plant steels, Materials Science and Technology, 22, 12, pp. 1387-1395, (2006)
  • [7] Abe F, Tabuchi M, Kondo M, Et al., Suppression of type Ⅳ fracture and improvement of creep strength of 9Cr steel welded joints by boron addition, International Journal of Pressure Vessels and Piping, 84, 1, pp. 44-52, (2007)
  • [8] Xiao Bo, Creep Microscopic Damage Mechanism and Constitutive Model of New Martensitic Heat Resistant Steel G115
  • [9] Zhao L, Jing H Y, Xu L Y, Et al., Investigation on mechanism of type Ⅳ cracking in P92 steel at 650℃, Journal of Materials Research, 26, 7, pp. 934-943, (2011)
  • [10] Zhao L, Jing H Y, Xu L Y, Et al., Experimental study on creep damage evolution process of Type Ⅳ cracking in 9Cr-0.5Mo-1.8W-VNb steel welded joint, Engineering Failure Analysis, 19, pp. 22-31, (2012)
1234567