Results 31 to 40 of about 1,410 (212)
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
The Initial Stage Corrosion of X80 Steel in Saturated Sandy Soil Containing Cl- and SO42-
International Journal of Electrochemical Science, 2021 The corrosion differences of X80 steel are exhibited by electrochemical impedance spectroscopy, polarization curves, and scanning electron microscopy in saturated sandy soil containing different concentrations of NaCl and Na2SO4 under indoor simulation ...
Funan Sun +5 more
doaj +1 more source
Corrosion Behavior of X70 and X80 Pipeline Steels in Simulated Soil Solution
International Journal of Electrochemical Science, 2018 Corrosion behavior of X70 and X80 steel in simulated soil solution with AC interference was studied by applied open circuit potential, polarization curve, scanning electron microscope and gravimetry.
Xinhua Wang +4 more
doaj +1 more source
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
Study on Improving the Performance of X80 Pipeline Steel
DEStech Transactions on Engineering and Technology Research, 2017 This paper analyzes the methods of improving the performance of X80 pipeline steel. In the process of manufacturing piping, the right temperature of coiling the steel can improve the comprehensive mechanical properties of X80 pipeline steel. The proper cooling rate can make heat affected zone get the good performance.
Yan Liu +3 more
openaire +2 more sources
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
The effect of hydrogen on the fracture toughness of friction‐stir welded API 5L X70 pipeline steels
Fatigue &Fracture of Engineering Materials &Structures, Volume 45, Issue 10, Page 3009-3024, October 2022., 2022 Abstract The hydrogen embrittlement (HE) leads to severe steel degradation of mechanical properties. The hydrogen atoms diffuse into the steel and get positioned into reversible and irreversible trap sites. The pipe to transport oil and gas needs to be welded to construct long‐distance pipeline projects; thus, friction‐stir welding (FSW) has proven an ...
Joseane M. Giarola +5 more
wiley +1 more source
International Journal of Electrochemical Science, 2018 An orthogonal experimental group of saline soils with soluble salt anions (Cl-, SO42-and HCO3-) was designed by orthogonal assistant and IBM SPSS statistics 21 software.
Fuli Ma +3 more
doaj +1 more source