Results 71 to 80 of about 646 (183)

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

open access: yesMetals
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   +7 more
doaj   +1 more source

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

open access: yesAdvances 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   +6 more
doaj   +1 more source

Corrosion behavior of X80 pipeline steel in a simulated soil solution at different temperatures

open access: yesInternational 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   +6 more
doaj   +1 more source

Effect of inclusions on DWTT properties of thick gauge X80 hot rolled steel strip

open access: yes工程科学学报, 2018
The 22 mm thick X80 hot-rolled coil production process replaces the traditional wide and thick plate production process, which has remarkable advantages in improving the yield, reducing the cost of manufacturing, and improving the outer diameter ...
WANG Hao   +5 more
doaj   +1 more source

Relationship between coercivity and stress of X80 pipeline steel

open access: yesYou-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 stress measurement method is a new technology to evaluate the safety margin and prevent the safety ...
CHENG Fanju   +5 more
openaire   +1 more source

Study of phase transformations In API 5L X80 Steel in order to increase its fracture toughness

open access: yesMaterials Research, 2013
Phase transformations in API 5L X80 steel were studied in different thermomechanical sequences with a view to increasing the fracture toughness of this steel.
Igor Rafael Vilarouco Pedrosa   +3 more
doaj  

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