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Effect of Nb on microstructure and corrosion resistance of X80 pipeline steel
International Journal of Pressure Vessels and Piping, 2023Yonggang Zhao, Xuping Su
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Splitting susceptibility in modern X80 pipeline steels
Materials Science and Engineering: A, 2020Abstract The microstructure and crystallographic texture of modern industrially produced API X80 grade pipeline steels were studied to identify the factors associated with the phenomenon known as splitting, which can occur on the fracture surfaces of Charpy, drop-weight tear test and full-scale fracture propagation tests.
Gervasyev, Alexey +4 more
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Fracture Toughness and Application of X80 Pipeline Steel
Materials Science Forum, 2019The fracture toughness of X80 pipeline steel, which has been widely used in China, plays a key role in pipeline safety insurance. In order to know the accurate fracture toughness of X80, the methods of acoustic emission and high K ratio have been carried out to judge the initiation of crack propagation and improve flatness of fatigue pre-crack front ...
Hua Zhang, Hong Zhang, Cai Hong Lu
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Control of Element and Inclusion for X80 Pipeline Steel
Advanced Materials Research, 2013According to the present situation of production X80 pipeline steel, the performance requirements of X80 pipeline steel, and the effect and control technology of various elements in steel, and the size and shape control technology of inclusions are reviewed.
Qi Chun Peng +3 more
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Quantification of Splitting in X80 Pipeline Steel
Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, 2018The results of in-depth analysis of microstructure and crystallographic texture of several industrial batches of line pipes with known full-scale burst test results are presented. Several microstructural features promoting splitting are highlighted and quantified using electron back-scattered diffraction (EBSD) data.
Alexey Gervasyev +4 more
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Hydrogen induced cracking of X80 pipeline steel
International Journal of Minerals, Metallurgy, and Materials, 2010The hydrogen-induced cracking (HIC) behavior of X80 pipeline steel was studied by means of electrochemical charging, hydrogen permeation tests, tension test, and scanning electron microscopy (SEM). The experimental results indicate that the increase of charging time and charging current density or the decrease of the solution pH value leads to an ...
Chao-fang Dong +4 more
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Study on Microstructure and Properties of X80 Pipeline Steel
Advanced Materials Research, 2014Experimental methods, such as OM, SEM and X-EDS, were used to study the microstructure of X80 pipeline steel. It mainly consists of fine acicular ferrite (AF). X80 pipeline steel possesses high strength and impact energy at-30°C approaches to 400J.
Xiang Dong Huo, Feng Dong, Lie Jun Li
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Effect of Pseudomonas sp. on simulated tidal corrosion of X80 pipeline steel
Bioelectrochemistry, 2023Microbiologically influenced corrosion of pipeline steel in seawater has long been concerned by scholars all over the world, but there were few reports on the microorganism effect on marine tidal corrosion of steels. In this work, the effect of Pseudomonas sp. on static tidal corrosion of X80 pipeline steel were systematically studied using weight-loss,
Xiaobao, Zhou +5 more
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Precipitation behaviors of X80 acicular ferrite pipeline steel
International Journal of Minerals, Metallurgy, and Materials, 2011The precipitation behaviors of X80 acicular ferrite pipeline steel were investigated by using transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). The results show that dendritic precipitates in the as-cast steel slabs precipitate mainly in grain boundaries, and these dendritic precipitates dissolve and re-precipitate to two
Ai-min Zhao +5 more
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Study on Mechanical Properties Anisotropy of X80 Pipeline Steel
Advanced Materials Research, 2013The microstructure of X80 pipeline steel in different directions were observed by SEM technique and its effective grain size and misorientation were statistically analyzed by EBSD system. Based on these results, the mechanical properties at 0°, 45° and 90° to the rolling direction of X80 pipeline steel were studied.
Qiang Duan +3 more
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