Results 1 to 10 of about 25,385 (265)

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

Materials (Basel)
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.
Chen B, Qiu F, Xia L, Xu L, Jin J, Gou G.   +5 more
europepmc   +4 more sources

Influence of H₂S on the Hydrogen Embrittlement Susceptibility of X80 Pipeline Steel in Hydrogen-Doped Natural Gas. [PDF]

ACS Omega
This study investigated the behavior of H2S on the hydrogen embrittlement susceptibility of X80 pipeline steel in hydrogen-doped natural gas and thoroughly discussed the mechanism of its influence.
Zhou J, Wu M, Qiu J, Cheng R, Tian M.
europepmc   +2 more sources

Effect of Post-Weld Heat Treatment on Microstructure and Fracture Toughness of X80 Pipeline Steel Welded Joint. [PDF]

Materials (Basel), 2022
In the current study, post-weld heat treatment (PWHT 580 °C) was used for an X80 pipeline steel-welded joint, and the fracture toughness of the welded joint was investigated using a crack tip opening displacement (CTOD) test.
Wang X, Wang D, Dai L, Deng C, Li C, Wang Y, Shen K.   +6 more
europepmc   +2 more sources

Research on Hydrogen-Induced Induced Cracking Sensitivity of X80 Pipeline Steel under Different Heat Treatments. [PDF]

Materials (Basel)
X80 pipeline steel has played a vital role in oil and gas transportation in recent years. However, hydrogen-related issues frequently lead to pipeline failures during service, resulting in significant losses of properties and lives.
Wu C, Yan C, Zhang S, Zhou L, Shen M, Tian Z.   +5 more
europepmc   +2 more sources

Effect of Cr Content on the Microstructure and Toughness of the Supercritically Coarse-Grained Heat-Affected Zone in X80 Pipeline Steel. [PDF]

Materials (Basel)
The existing studies mainly focus on the coarse-grained heat-affected zone and the inter-critically reheated coarse-grained heat-affected zone, while the studies on other sub-zones are relatively low.
Qin Y, Wang F, Li Z, Hu Z, Zhao L, Yin S, Jia S.   +6 more
europepmc   +2 more sources

Residual Stress Measurement Using EMAT for X80 Pipeline Steel: Effects of Coating Thickness and Surface Roughness Under Low Surface Preparation Requirements. [PDF]

Materials (Basel)
The residual stress significantly affects the operational safety of oil and gas pipelines. Traditional ultrasonic stress measurement methods require pipeline surface pretreatment, which reduces detection efficiency.
Luo C, Chen B, Xia L, Xu L, Liu X, Zou S, Peng D, Gou G.   +7 more
europepmc   +2 more sources

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

Materials (Basel), 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).
Cui Q, Wu J, Xie D, Wu X, Huang Y, Li X.
europepmc   +4 more sources

Relationship between coercivity and stress of X80 pipeline steel

You-qi chuyun, 2022
The operation environment along the long-distance oil and gas pipelines is complex, and the abnormal external load during pipeline operation may lead to local stress concentration, which will increase the operation risk of pipeline.The coercivity-based ...
CHENG Fanju, LI Kun, DING Rong, PENG Qifeng, LI Yukun, HAN Bin   +5 more
doaj   +2 more sources

Quantitative Study on Hydrogen Concentration–Hydrogen Embrittlement Sensitivity of X80 Pipeline Steel Based on Hydrogen Permeation Kinetics

Metals
The hydrogen concentration in steel is directly related to the hydrogen embrittlement (HE) sensitivity of the steel. This study combined electrochemical hydrogen charging, the slow strain rate test (SSRT), and hydrogen permeation experiments to ...
Rundong Zhang, Songyuan Ai, Mujun Long, Lihua Wan, Yifan Li, Danbin Jia, Huamei Duan, Dengfu Chen   +7 more
doaj   +2 more sources

Quantitative Evaluation of Mechanical Properties of Hydrogen Transmission Pipelines Based on Weak Magnetic Detection [PDF]

Sensors
With the rapid development of the hydrogen energy industry, long-distance hydrogen transportation based on natural gas pipelines has emerged as a crucial technique.
Siyang Wang, Xianglong Sun, Xingyuan Miao, Haimu Ye   +3 more
doaj   +2 more sources