Results 11 to 20 of about 536 (159)

Effect of Nanosized NbC Precipitates on Hydrogen Diffusion in X80 Pipeline Steel [PDF]

Materials, 2017
In this paper, the effects of dispersed 3~10 nm NbC precipitates on hydrogen diffusion in X80 pipeline steel were investigated by means of high resolution transmission electron microscopy (HRTEM), electrochemical hydrogen permeation, and thermal desorption spectroscopy (TDS).
Qiaoqi Cui, Junsheng Wu, Donghan Xie, Xiaoguang Wu, Yunhua Huang, Xiaogang Li   +5 more
openaire   +3 more sources

Hydrogen Damage Behavior of X80 Pipeline Steel Under AC Interference [PDF]

Materials
X80 pipeline steel is a key material in the field of oil and gas transportation. Its damage behavior in a hydrogen-filled environment directly affects pipeline safety. In this study, through hydrogen permeation experiments and slow strain rate tensile tests, the electrochemical responses and hydrogen-induced cracking behaviors of X80 base metal and ...
Tong Li, Zhihui Li, Kejun Jiang, Yuxiang Cai, Wan Sun, Ziyong He, Jun Zhao, Tao Cao, Junjun Jin, Wenjing Chen, Guoqing Gou   +10 more
openaire   +3 more sources

Investigating the effect of microstructure difference on hydrogen embrittlement sensitivity of X80 pipeline [PDF]

Scientific Reports
This work aims to reveal the complex relationship between hydrogen embrittlement behavior and microstructure of X80 pipeline. The influence of the microstructure difference between X80 pipeline base metal and weld metal on the hydrogen induced damage and hydrogen permeation behavior of the material are investigated by fracture toughness testing ...
Zhang, Shuai, Bi, Zuozhang, Li, Juan
openaire   +3 more sources

In Situ Ultrasonic Characterization of Hydrogen Damage Evolution in X80 Pipeline Steel [PDF]

Materials
A nondestructive evaluation of the hydrogen damage of materials in a hydrogen environment is important for monitoring the running conditions of various pieces of equipment. In this work, a new thermostatic electrolytic hydrogenation in situ ultrasonic test system (In Situ TEH-UT) was developed.
Bing Chen, Feifei Qiu, Li Xia, Lintao Xu, Junjun Jin, Guoqing Gou   +5 more
openaire   +3 more sources

Study on anisotropy of B+F dual-phase X80 pipeline steel under slow strain tensile in simulated seawater

Journal of Hebei University of Science and Technology, 2020
In order to study the effect of anisotropy on the safe service of B+F dual-phase X80 pipeline steel, the slow strain tensile and polarization behaviors of hot rolled ferrite + bainite dual-phase X80 pipeline steel at three angles(0°, 45° and 90°) with ...
Jing MA, Shenhao WANG, Shuangjie ZHANG, Lifeng FAN   +3 more
doaj   +1 more source

Phenomenological 2D and 3D Models of Ductile Fracture for Girth Weld of X80 Pipeline

Buildings, 2023
Welding is the main method for oil/gas steel pipeline connection, and a large number of girth welds are a weak part of the pipeline. Under extremely complex loads, a steel pipeline undergoes significant plastic deformations and eventually leads to ...
Naixian Li, Bin Jia, Junhong Chen, Ying Sheng, Songwen Deng   +4 more
doaj   +1 more source

Effect of Low Water Content and Temperature on Corrosion Behavior of X80 Pipeline Steel in Shenyang Soil Simulated Solution [PDF]

Cailiao Baohu, 2023
Aiming at exploring the effect of low water content and temperature on the electrochemical corrosion behavior of X80 pipeline steel in Shenyang soil simulated solution，the data of impedance spectrum and polarization curve were measured by weight loss ...
ZHANG Xiaolong
doaj   +1 more source

Effects of in-service strain on girth weld failure of an X80 pipeline

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2023
Abstract In general, transmission pipelines are designed by hoop stress induced by internal pressure, and maximum longitudinal stress. The paper is mainly about the failure analysis of an X80 pipeline brittle fracture on girth weld under in-service strain.
Hongyuan Chen, Gao Xiongxiong, Yu Dongliang, Feng Hui, Chi Qiang, Wang Lei, Huo Chunyong   +6 more
openaire   +1 more source

Strain model and experimental study of elastic viscoplastic for crack-tip zone of X80 steel pipe

Journal of Pipeline Science and Engineering, 2022
The mechanical state of the process zone at the crack-tip is one of the main factors that affect crack initiation and growth in the long-term safe operation of oil and gas pipelines. Many tests showed that the stress and strain fields in the fracture-tip
Shaohua Dong, Feng Li, Donghua Peng, Hang Zhang, Shiwen Guo, Haotian Wei, Xuan Sun, Yasir Mukhtar   +7 more
doaj   +1 more source

Progress and prospects of research and application of X80 pipeline steel and steel pipe in China

You-qi chuyun, 2020
With the rapid development of oil and gas pipeline construction, X80 pipeline steel and steel pipe have been applied on large scale. The research and application history and main progress of X80 high-grade pipeline steel and steel pipe in China were ...
Yaorong FENG, Lingkang JI, Weiwei LI, Yinglai LIU, Chunyong HUO   +4 more
doaj   +1 more source