Results 31 to 40 of about 650 (181)

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, Julian A. Avila, Osvaldo M. Cintho, Haroldo C. Pinto, Marcelo F. de Oliveira, Waldek W. Bose Filho   +5 more
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, YongMan Chen, JianMing Wang, ChunLin He   +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, Delu, Liu, Jianping, Zhang, Wenhuai, Tian   +3 more
openaire   +2 more sources

Study of the Initial Corrosion of X80 Steel in a Saturated Saline Soil Co-Contaminated with Cl-, SO42-and HCO3-

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, Ruizhen Xie, Pengju Han, Xiaohong Bai   +3 more
doaj   +1 more source

Influence of Temperature on the Corrosion Behavior of X80 Steel in an Acidic Soil Environment

International Journal of Electrochemical Science, 2020
The influence of temperature on the corrosion behavior of X80 steel in an acidic soil environment was determined using electrochemical and surface analysis methods.
Yuanhui Wu, Suxing Luo, Qingsong Mou
doaj   +1 more source

Corrosion Behavior of X80 Pipeline Steel under Thin Electrolyte Layer of Acidic Soil Simulated Solution

International Journal of Electrochemical Science, 2016
Corrosion behavior of X80 steel under thin electrolyte layer (TEL) of acidic soil simulated solution were studied by utilizing polarization curves, EIS, SEM and XRD.
Shuaixing Wang, Daoxin Liu, Nan Du, Qing Zhao, Jinhua Xiao   +4 more
doaj   +1 more source

Simulation analysis of X80 pipeline steel welding

Metalurgija, 2023
In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding. The peak temperature of different passes was compared, and the change trend of temperature field in the welding ...
Li, M. M., Ji, H. C., Lin, Q. S., Wu, C. D., Cai, S.   +4 more
openaire   +2 more sources

A study on corrosion of X80 steel in a simulated tidal zone

Journal of Materials Research and Technology, 2021
In the paper, an experimental technique simulating tidal rhythm for studying the tidal zone corrosion of metals was developed and the tidal zone corrosion of X80 pipeline steel was studied via the technique using weight loss, electrochemical measurement, X-ray diffraction (XRD), and scanning electron microscope (SEM).
Xiaobao Zhou, Tangqing Wu, Lin Tan, Jiahao Deng, Cong Li, Wei Qiu   +5 more
openaire   +2 more sources

Study on Repairing and Reinforcing Effect of Steel Epoxy Sleeve on Girth Weld Defects

Shiyou jixie, 2022
In order to study the repairing and reinforcing effect of steel epoxy sleeve on girth weld defects of X80 pipeline,ANSYS is applied to establish the nonlinear finite element models of X80 pipeline with girth weld defects and pipeline reinforced by steel ...
Yu Dongliang, Yang Chuan, Wu Dongrong, Jiang Yi, Fang Yingchao   +4 more
doaj  

Effect of Temperature on the Corrosion Behavior of API X80 Steel Pipeline

International Journal of Electrochemical Science, 2015
The electrochemical behavior of API X80 pipeline steel in 3.5% of NaCl solution containing different concentrations of H2S at different temperatures was investigated.
C. Okonkwo Paul, Essam Ahmed, A.M.A. Mohamed   +2 more
doaj   +1 more source