Results 171 to 180 of about 2,006 (215)

Hydrogen embrittlement sensitivity of X100 pipeline steel under different pre-strain

International Journal of Hydrogen Energy, 2019
Abstract In the present study, the influences of hydrogen on the mechanical properties as well as the pre-strain on the HE susceptibility of X100 pipeline steel were investigated by combining electrochemical hydrogen charging and tensile experiments. Both the yield and tensile strength decrease with the increasing hydrogen charging time no matter the
Y.D. Han, R.Z. Wang, H. Wang, L.Y. Xu
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Microstructure and Mechanical Properties of X80/X100 High Deformability Pipeline Steel

Advanced Materials Research, 2011
In the present study, X80 and X100 grade high deformability pipeline steels have been processed by using TMCP and followed two-stage cooling process. The microstructures of the X80HD (HD, high deformability) and X100HD steels were both characterized by ferrite-bainite dual phase.
Dian Xiu Xia, De Liang Meng, Shou Yong An, Yong Lin Kang   +3 more
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Hybrid intelligent method for fuzzy reliability analysis of corroded X100 steel pipelines

Engineering with Computers, 2020
Epistemic uncertainties are critical for reliable design of corroded pipes made of high-strength grade steel. In this work, corrosion defects geometries and operating pressure are provided as the epistemic uncertainties in reliability analysis. A framework of an iterative approach-based bi-loop is presented for fuzzy reliability analysis (FRA) of ...
Mansour Bagheri, Shun-Peng Zhu, Mohamed El Amine Ben Seghier, Behrooz Keshtegar, Nguyen-Thoi Trung   +4 more
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Adsorption of Oil onto API-X100 Pipeline Steel in CO2-Saturated Solutions

Metallurgical and Materials Transactions B, 2013
This research explores the validity of Langmuir adsorption theorem in analyzing the natural corrosion inhibition by an aromatic C10H12 compound, in a hydrocarbon fuel, in 1-bar CO2-saturated solutions. The adsorption isotherms were constructed from the efficiencies of inhibition, by 10, 20, and 30 vol pct of the fuel, of the corrosion rates calculated ...
Faysal Fayez Eliyan, Akram Alfantazi
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A New Corrosion Mechanism for X100 Pipeline Steel Under Oil-Covered Chloride Droplets

Corrosion, 2018
A 1.7 mM NaCl droplet on X100 pipeline steel covered by paraffin oil is used to simulate the corrosive environment encountered in heavy oil or bitumen pipelines. The development of corrosion under the droplet was monitored and explored in two stages. In the initial stage (1 h), the distribution of corrosion pits was heterogeneous with one area under ...
Liang, Hongxing, Liu, Jing, Schaller, Rebecca Filardo, Asselin, Edouard   +3 more
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Measurement and Analysis of Impact Test Data for X100 Pipeline Steel

Applied Mechanics and Materials, 2006
Charpy upper shelf energy is widely used as a fracture controlling parameter to estimate the crack arrest/propagation performance of gas transportation pipeline steels. The measurement of this fracture criterion particularly for modern steels and its apportion into different components, i.e.
S.H. Hashemi, I.C. Howard, J.R. Yates, R.M. Andrews   +3 more
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Experimental Investigation of Slant Crack Propagation in X100 Pipeline Steel

2008
Failure information from full-thickness burst experiments on long distance gas transportation pipelines has shown that unstable fractures propagating in the pipeline axial direction are dominated by ductile slant shearing [1]–[3]. Different test samples, e.g.
S. H. Hashemi, I. C. Howard, J. R. Yates, R. M. Andrews   +3 more
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A nanoindentation study on the micromechanical characteristics of API X100 pipeline steel

Metals and Materials International, 2009
The hardness characteristics of constituent micro-phases (ferrite and bainite) in a dual-phase API X100 pipeline steel were analyzed by nanoindentation experiments. The measured nano-hardness of the bainite phase is from 3.8 GPa to 4.9 GPa, which is much higher than that of the ferrite phase, which ranged from 1.75 GPa to 2.3 GPa. With the hardness and
Byoung-Wook Choi, Dong-Han Seo, Jae-il Jang   +2 more
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Corrosion of Welded X100 Pipeline Steel in a Near-Neutral pH Solution

Journal of Materials Engineering and Performance, 2009
In this work, electrochemical corrosion behavior of a welded X100 pipeline steel was studied in a near-neutral pH solution by electrochemical scanning vibrating electrode technique combined with metallographic and scanning electron microscopy/energy dispersive x-ray analysis.
C. Zhang, Y. F. Cheng
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Modeling the fatigue crack growth of X100 pipeline steel in gaseous hydrogen

International Journal of Fatigue, 2014
Abstract This work proposes a phenomenological fatigue crack propagation (FCP) model for API-5L X100 pipeline steel exposed to high-pressure gaseous hydrogen. The semi-empirical model is predicated upon the hypothesis that one of two mechanisms dominate the fatigue crack growth (FCG) response depending upon the crack extension per cycle ( da / dN ...
Robert L. Amaro, Neha Rustagi, Kip O. Findley, Elizabeth S. Drexler, Andrew J. Slifka   +4 more
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