Results 151 to 160 of about 453 (191)
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Effect of Cooling Process on Microstructure and Mechanical Properties of X100 Pipeline Steel
Steel Research International, 2016Xiao-Guang Zhou +2 more
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CTOA Measurements of Welds in X100 Pipeline Steel
2008 7th International Pipeline Conference, Volume 3, 2008A suite of tests characterizing X100 pipeline steels was initiated at the National Institute of Standards and Technology (NIST) in Boulder. Part of the test matrix included testing the toughness of the base metal, welds, and heat-affected zones (HAZ) by use of modified double cantilever beam specimens for crack tip opening angle (CTOA) testing.
Elizabeth Drexler +9 more
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Study on the Weldability of X100 Pipeline Steel on Scene
Advanced Materials Research, 2013With the long-distance oil and gas pipelines are to development of the direction of large-diameter, high-pressure, high grade pipeline steel applications gradually become the trend of the development of the oil and gas pipeline construction. The welding process of the X100 line pipe which is about to industrial application is not yet to be determined ...
Pin Yi Wang, Zong Yuan Mou
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Microstructure and Properties of X100 High Strength Pipeline Steel
Materials Science Forum, 2015In order to study the effect of welding process on the microstructure and properties of weld joint of X100 pipeline steel, GMAW was used to prepare the weld joint with low-carbon high manganese-molybdenum-nickel flux cored welding wire. SEM and XRD were used to analyze the microstructure and phase morphology of HAZ and weld metal.
Yu Xiao Tian +4 more
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Research on Hot Deformation Behavior of the X100 Pipeline Steel
Applied Mechanics and Materials, 2014The hot deformation of X100 pipeline steel was studied in the temperature range of 800~1200 °C and strain rate of 0.1~40s-1 on Gleeble-1500 thermal mechanical simulating tester. The effect of deformation conditions on the flow stress was analyzed. The constitutive equation of hyperbolic sine including Z parameter was used to describe the relationship ...
Wan Hua Yu +3 more
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The Underoil Droplet Corrosion Behavior of X100 Pipeline Steel
ECS Meeting Abstracts, 2018Canadian natural bitumen production will reach a peak of 112 million barrels per day in 2078 [1]. Pipelines are primarily used to transport this bitumen. Bitumen must be diluted in order to be pumped through a pipeline effectively because it is otherwise too viscous to flow [2].
Hongxing Liang +3 more
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Microstructures and Mechanical Properties of X100 Pipeline Steel Strip
Journal of Iron and Steel Research International, 2014Abstract Dynamic CCT (continuous cooling transformation) curves and effects of microstructures and M/A islands of X100 hot rolled strip on mechanical properties were studied by means of a thermal simulator, a scanning electron microscope (SEM), a transmission electron microscope (TEM), a digital micro-hardness tester and Image-Pro Plus analysis ...
Lin-na Duan +4 more
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Characterization of fiber laser welds in X100 pipeline steel
Materials & Design, 2009Recent developments in steel grades for pipeline applications have lead to new high strength grades, such as API5L-X100. Higher strength enables the use of thinner walled pipe, with greater operating pressures and reduced overall costs. The base material presents good toughness values; however there are still limitations regarding the weldability of ...
R. Miranda +4 more
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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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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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