Results 31 to 40 of about 1,080 (202)
Hydrogen Damage Behavior of X80 Pipeline Steel Under AC Interference. [PDF]
Materials (Basel)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 ...
Li T +10 more
europepmc +3 more sources
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 +6 more
openaire +1 more source
Metals, 2020 Heavy gauge pipeline steels experience a low qualification in drop-weight-tear test properties because of the low cooling capability of conventional thermomechanical controlled processing.
Xue-qiang Wang +3 more
doaj +1 more source
Investigating the effect of microstructure difference on hydrogen embrittlement sensitivity of X80 pipeline. [PDF]
Sci RepThis 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 S, Bi Z, Li J.
europepmc +3 more sources
steel research international, Volume 94, Issue 6, June 2023., 2023 Herein, a new method is developed by combining scanning Kelvin probe force microscopy measurements with finite‐element modeling, studying the hydrogen atom diffusion and distribution in ferrite and bainite phases contained in X80 pipeline steel. The hydrogen atom concentrations in lattice and trap sites in the two phases are determined.
Qing Hu, Yufeng Frank Cheng
wiley +1 more source
Precipitates in Nb and Nb–V Microalloyed X80 Pipeline Steel [PDF]
Microscopy and Microanalysis, 2013 AbstractPrecipitates in two X80 pipeline steels were studied by transmission electron microscopy equipped with an energy filtering system. The steels are microalloyed with niobium and niobium–vanadium (Nb–V), respectively, and produced by continuous hot rolling.
Zhongyi, Li +3 more
openaire +2 more sources
Energy Science &Engineering, Volume 11, Issue 1, Page 398-409, January 2023., 2023 A new analytic method for the buried pipeline crossing the normal fault based on the shape function. Abstract Oil and gas pipelines that go through an active normal fault often deform largely and cause serious disasters. On the basis of the beam theory of the elastic foundation and assuming a shape function for the deformed pipeline, a new analytical ...
Wen‐jun Hu +4 more
wiley +1 more source
International Journal of Electrochemical Science, 2018 The corrosion behavior of X80 pipeline steel in 3.5 wt.% NaCl solution and simulated Dagang soil solution under different alternating current (AC) electrical densities was studied using the weight loss method, and was tested and analyzed using the ...
Xinhua Wang +3 more
doaj +1 more source
Research on Material Selection Method and Brittle Fracture Mechanism of High‐Pressure Pipeline
Shock and Vibration, Volume 2023, Issue 1, 2023., 2023 Aiming at the problem of the brittle fracture of pressure pipeline, the elastic constraint structure is described by using members and engineering building structures, and the concept of elastic constraint is proposed. Through the stress field analysis of the pressure pipeline under internal pressure, it is found that the pressure pipeline under ...
Yulin Li, Zhihui Li, Guangjian Dong
wiley +1 more source
You-qi chuyun, 2020 China-Russia Eastern Gas Pipeline is characterized by ultra-large diameter, high grade steel (X80) and high pressure rating. It is located in the area with geologically active permafrost and semi-permafrost zones in the north, where is prone to ...
Yukun LI +4 more
doaj +1 more source