Results 41 to 50 of about 536 (159)

Effect of Microstructural Constituents on Hydrogen Embrittlement Resistance of API X60, X70, and X80 Pipeline Steels [PDF]

Archives of Metallurgy and Materials
This study describes how microstructural constituents affected the hydrogen embrittlement resistance of high-strength pipeline steels. The American Petroleum Institute (API) X60, X70, and X80 pipeline steels demonstrated complicated microstructure ...
Seung-Hyeok Shin, Dong-Kyu Oh, Sang-Gyu Kim, Byoungchul Hwang   +3 more
doaj   +3 more sources

Effect of Base Metal Microstructure on Softening Behavior of the Heat-Affected Zone of X80 GMAW Girth Weld

Metals
Softening in the heat-affected zone (HAZ) of high-strength pipeline welds compromises its service safety but the corresponding softening mechanism is not well-understood.
Xueda Li, Zhangyi She, Xunyun Lv, Zeyang Zhang, Liying Li, Bin Han   +5 more
doaj   +1 more source

Strain capacity analysis of the mismatched welding joint with misalignments of D 1,422 mm X80 steel pipelines: An experimental and numerical investigation

Journal of Pipeline Science and Engineering, 2021
Anomalies as misalignment, microcrack are inevitable for large diameter high strength steel pipelines. To ensure the strain capacity of mismatched welding joint with misalignments of D 1,422 mm X80 steel pipeline, a comprehensive study via wide plate ...
Yue Yang, Hong Zhang, Kai Wu, Pengchao Chen, Yongli Sui, Die Yang, Xiaoben Liu   +6 more
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Corrosion behavior of X80 pipeline steel in a simulated soil solution at different temperatures

International Journal of Electrochemical Science
For the X80 pipeline steel, electrochemical impedance spectroscopy and potentiodynamic polarization curves were employed to examine the electrochemical corrosion behaviors of its base metal and weld joint under varying test in NS4 simulated soil solution.
Guoqi Ren, Xiaoyu Shi, Yuna Xue, Yongji Zhao, Ming Liu, Chenchao Tian, Sheji Luo   +6 more
doaj   +1 more source

Effects of pH on the Electrochemical Behavior and Stress Corrosion Cracking of X80 Pipeline Steel in Simulated Alkaline Soil Solution

International Journal of Electrochemical Science, 2019
The electrochemical behavior of X80 pipeline steel in alkaline soil solution with different pH value was studied by mean of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS).
Ping Liang, Yier Guo, Hua Qin, Yanhua Shi, Fei Li, Lan Jin, Zheng Fang   +6 more
doaj   +1 more source

Mechanical Properties of High-Nb X80 Steel Weld Pipes for the Second West-to-East Gas Transmission Pipeline Project

Advances in Materials Science and Engineering, 2017
The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been ...
Gui-ying Qiao, Xiao-wei Chen, Zhi-en Zhang, Xiu-lin Han, Xu Wang, Bo Liao, Fu-ren Xiao   +6 more
doaj   +1 more source

Characteristic investigation of stress-hydrogen coupling hydrogen diffusion of X80 steel based on finite element simulation [PDF]

MATEC Web of Conferences
Since hydrogen atoms are enriched in the corrosion defect regions of steel pipelines under stress-induced effects when transporting gaseous hydrogen, this leads to the hydrogen embrittlement (HE) phenomenon.
Shen Jiaping, Zhou Haiting, Zhu Xinwei, Yang Jianhua, Miu Haibo, Cai Zhihui, Wang Qiang, Song Yun   +7 more
doaj   +1 more source

Determination of the design parameters of X80 cold bending pipe with 1 422 mm diameter in China-Russia Eastern Gas Pipeline

You-qi chuyun, 2020
In order to satisfy the actual construction needs of China-Russia Eastern Gas Pipeline Project, it is necessary to research the design parameters of the cold bending pipe of X80 pipeline with 1 422 mm diameter. In this paper, the maximum bending angle of
Xiaoqiang ZHANG, Yu HOU, Qingmei JIANG, Wei FENG   +3 more
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Structural Design of Demagnetization Detection Robot in Oil and Gas Pipeline

Shiyou jixie, 2020
The oil and gas pipelines in service will produce certain residual magnetism due to the influence of various factors. To quickly and efficiently eliminate the residual magnetism, according to the theory of dynamic demagnetization of permanent magnets, a ...
Jia Shihao, Zhao Hong
doaj  

Hydrogen Embrittlement Sensitivity of X80 Pipeline Steel Welded Joints in Hydrogen Environment [PDF]

Cailiao Baohu
In order to explore the changes in fracture mechanical properties of pipeline steel welded joints in hydrogen environment, the notched tensile in-situ hydrogen charging method was used to study the hydrogen embrittlement susceptibility of X80 steel base ...
LI Tianlei, LI Ke, SHI Daiyan, FENG Min, YANG Zhiwen, CHEN Yingfeng, WANG Xiuyun, LIN Yuanhua, YU Zifeng
doaj   +1 more source