Results 131 to 140 of about 380 (162)
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A nanoindentation study on the micromechanical characteristics of API X100 pipeline steel
Metals and Materials International, 2009The 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 +2 more
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Measurement and Analysis of Impact Test Data for X100 Pipeline Steel
Applied Mechanics and Materials, 2006Charpy 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 +3 more
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Microstructure and corrosion performance of X100 steel in the oilfield produced water
Corrosion Engineering, Science and Technology, 2019ABSTRACTThe corrosion performances of X100 steels in the oilfield produced water with different temperature (30°C, 40°C, 60°C) under the simulated working conditions were studied by potentiodynamic...
Jie Zhao +4 more
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Hybrid intelligent method for fuzzy reliability analysis of corroded X100 steel pipelines
Engineering with Computers, 2020Epistemic 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 +4 more
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Effects of Chloride and Carbonate on Corrosion of API-X100 Pipeline Steel
Journal of Materials Engineering and Performance, 2019Effects of chloride, introduced with 0.03, 0.05, 0.10, 0.12, 0.22, 0.25 M, on the corrosion behavior of API-X100 pipeline steel in 0.15 M carbonate solutions were studied. The evaluations were carried out with monitoring the open-circuit potentials and electrochemical impedance spectroscopy (EIS).
Faysal Fayez Eliyan, Hatem M. Alsyouri
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Evaluating the Passivation of Corrosion of API-X100 Steel with Cyclic Voltammetry
Metallurgical and Materials Transactions B, 2017In this research, cyclic voltammetry, in oxygen-free low bicarbonate-carbonate solutions, was used to study the corrosion reactions of a high-strength steel, API-X100. With cycles of different scan ranges, the effects of cycling, transpassivation, and cathodic reduction on the electrochemistry of the passive films were analyzed.
Faysal Fayez Eliyan, Akram Alfantazi
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Effect of coiling temperature on microstructure and properties of X100 pipeline steel
Materials Science and Engineering: A, 2016Abstract Multiphase structure of bainite and M/A(martensite/austenite constituent) can be obtained through coiling continuous-HOP (Heating On-line Partitioning) technology, resulting in excellent deformability for X100 pipeline steel. The microstructure and properties of the steel at different coiling temperatures were investigated by means of ...
Shixia Cheng +5 more
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Effect of Prestrain and Aging on Mechanical Properties of X100 Pipeline Steels
ICPTT 2013, 2013Harsh environments that may displace a given pipeline beyond the elastic limit include: seismic areas (that may be susceptible to soil liquefaction, fault displacement or soil instabilities), continuous or discontinuous permafrost (that may result in thaw settlement and frost heave), and construction.
Weiwei Zhang +4 more
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Experimental Investigation of Slant Crack Propagation in X100 Pipeline Steel
2008Failure 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 +3 more
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Modeling the fatigue crack growth of X100 pipeline steel in gaseous hydrogen
International Journal of Fatigue, 2014Abstract 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 +4 more
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