Mitigation of microbial degradation of X80 carbon steel mechanical …
The test matrix for mitigating D. ferrophilus MIC deterioration of X80 mechanical properties using THPS is listed in Table 1.Each coupon was painted with Epoxy resin leaving 1 cm 2 of exposed surface on each square coupon and 4 cm 2 total exposed surface area (4 sides in the middle section) of each 76 mm long standard X80 dogbone coupon (ASTM E8, 2013).
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Mechanical and Metallurgical Properties of Heavy Wall …
In this paper, 27mm thick molybdenum and boron free Grade X80 high strain steel plate, was developed to reduce materials manufacturing cost. Steel plates were manufactured …
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Mechanical Construction & Consulting, INC
Since 1997 Mechanical Construction & Consulting has been a leading mechanical contractor serving the greater Anchorage area as well as remote areas of Alaska.Our experience includes a vast range of projects including office complexes, hospitals, large airplane hangers, schools, federal and state facilities, churches, parking garages, universities and many technically …
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iMICE MK-X80 RGB Blue Switch Mechanical Keyboard price …
The iMICE MK-X80 RGB Backlight is a Mechanical Gaming Keyboard with Blue Switches. It's easy to use, thanks to the USB plug-and-play feature that eliminates the need for a driver. Waterproof and anti-skid construction. ABS material, laser-etched design, non-slip, splash-resistant, and long-lasting. Rainbow Color Backlight Effects this improves ...
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Material development for grade X80 heavy-wall hot …
A new steel for grade X80 heavy wall thickness hot induction bends was designed based on the chemical compositions of commercial X80 steels in this work. Then, its continuous cooling transformation (CCT) diagram was determined with …
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Effect of heat treatment on the microstructure and mechanical
In this work, the effect of heat treatment conditions on the microstructure and mechanical properties of an American Petroleum Institute (API) X80 steel with a low carbon content of ~0.02% wt ...
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API 5L Pipes for Pipelines (Gr. B/X80, PSL1/2)
Execution: seamless or welded (seamless pipes may be used up to 24 inches, LSAW above 24 inches, ERW up to 20 inches); Specification level (API PSL1, PSL2): PSL1 is a standard quality used for pipelines, whereas PSL2 sets …
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Microstructure characteristics and mechanical properties of X80 …
The relation between microstructure characteristics and mechanical properties of X80 pipeline steels was investigated using optical microscopy, scanning electron microscopy, etc. It is shown that the structure consists of polygonal ferrite (PF), quasi-polygonal ferrite (QPF), acicular ferrite (AF), and granular bainitic ferrite (GF). With increasing volume …
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Volumes | International Pipeline Conference | American …
View Article titled, Optimization of Through Thickness Microstructural Grain Size, Homogeneity and Niobium Metallurgy Performance for Cost Effective Improved API X80 Heavy Gauge Large Diameter Pipe Body and Weld Mechanical Property Stability
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Investigation on Mechanical Properties of X80 Pipeline Girth …
Abstract. The traditional manual welding in pipeline construction is being gradually replaced by semi-automatic and automatic welding in China. Semi-automatic welding is especially applied to X80 pipeline girth weld welding widely. Compared with semi-automatic welding, automatic welding has features of more efficiency, better quality and higher reliability. As the …
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Microstructural and Mechanical Properties of X80 Girth …
X80 pipelines have developed rapidly, and the corresponding welding materials, methods and procedures have improved. Relevant studies have shown that the welding arc energy directly …
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Mechanical Properties and Microstructure of X80 Hot …
Mechanical Properties and Microstructure of X80 Hot-Rolled Steel Strip for the Second West-East Gas Pipeline Junhua Kong, Lin Zheng, Lixin Wu, Xiaoguo Liu, and Liwei Li ... efficiency and reduce construction cost of pipeline project. Since the first application of X80 steel in Germany in 1985 [1], more and more efforts were concentrated on ...
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Effects of RE on the microstructure and mechanical properties of X80
The effects of Ce on the microstructure, inclusions and mechanical properties of X80 pipeline steel were studied by optical microscope (OM), scanning electron microscopy (SEM) and EDS analysis.
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Welding of the high Grade Pipeline-Steel X80 and …
Nowadays already a lot of large onshore-projects have been implemented for the steel X80 with, as it seems, fully satisfactory results. The high grade pipeline-steel X80 is discussed in detail in this paper as well as the various projects performed with X80. A lot of money is spent worldwide in finding the right joining process for the circumferential welds of these …
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Numerical analysis EF of resilience impact test behavior for …
This comprehensive analysis distinguishes the research by offering a complete assessment of the mechanical properties of X80 steel, which can have significant implications …
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Microstructure and Property Analysis of X80 Pipeline …
With the development of pipeline engineering, long distance pipeline construction is more and more extensive, high strength and high steel grade pipeline steel has been rapidly developed. Nowadays, X80 pipeline steel welding technology is widely used in ... influence of X80 microstructure on mechanical properties was studied. The results show ...
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Volumes | International Pipeline Conference | American …
View Article titled, An Integrated Model to Predict Microstructure and Mechanical Properties in the Heat Affected Zone for X80 Linepipe PDF Topics: Heat, Mechanical properties, Gas metal arc welding, Solid solutions, Steel, Welding, Chemistry, Ferrites (Magnetic materials), Grain size, Thermomechanics
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Effect of volume fraction of bainite on microstructure and mechanical …
The dual-phase X80 can be obtained by accelerating cooling in the intercritical zone. The strength and the Y/T increase of dual-phase X80 with the increase of VB. The n and ductility of dual-phase X80 decrease monotonously with the increase of VB. The impact toughness of dual-phase X80 decreases little with the increase of VB. The dual-phase X80 …
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Dr. Robot X80 WiFi Mobile Development Platform (w/ Head)
WHD8010 - Animated Head Mechanical Construction Set x 1; X80-ME X80 - Mechanical Construction Set x 1; PMS5005 - Robot Sensing and Motion Controller x 1; PMB5010 - Multimedia Controller x 1; MDM5253 - DC Motor Driver …
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Root cause analysis of cracking in buried X80 natural gas …
In 2021, cracks formed in an onshore buried X80 natural gas pipeline with a diameter of 1219 mm. The present study investigated the cause of this failure through environmental and operational assessment, metallurgical evaluation, mechanical testing, material testing, stress analysis, and hydrogen embrittlement (HE) sensitivity testing.
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Study on the mechanical properties of X80 pipeline steel …
The mechanical properties of X80 steel were studied after H 2 pre-charging followed by mechanical properties tests and fracture morphologies observation. Results indicated that the hydrogen saturation time of X80 steel was roughly 48 h. H 2 pre-charging induced a decline in strength, plasticity, and fatigue properties, while hydrogen-assisted ...
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Influence of H2S interaction with prestrain on the mechanical
The influence of H 2 S interaction with prestrain on the mechanical properties of high-strength X80 steel was investigated by slow strain rate tensile tests and hydrogen content measurements. Results showed that elongation to failure first decreased and then increased with increasing prestrain. Moreover, hydrogen content decreased but the relative …
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Tempering microstructure and mechanical properties of pipeline steel X80
The tempering microstructure and mechanical properties of X80 steel used for heating-bent pipe were analyzed. The results show that the microstructure of X80 steel tempered at 550 °C and 600 °C is bainitic ferrite (BF)+granular bainite (GB), and partial ferrite laths in BF merge and broaden. The interior sub-lath boundary of some GB begins to ...
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Microstructure and Mechanical Properties of Fiber Laser …
Fiber laser-metal active gas (MAG) hybrid welding process was explored to join X80 pipeline steel to improve the efficiency and performance of pipeline welding. During the hybrid welding process, five different positions are applied to simulate the practical pipe girth welding. The weldability is evaluated concerning the bead shape, hardness, tensile, impact properties, …
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Comparative Study of Microstructure and Mechanical Properties of X80
The present work investigated the effect of weld composition and welding heat input on the microstructure and mechanical properties of two submerged arc welded (SAW) joints of API 5L-X80 pipeline ...
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Microstructure and Mechanical Properties of X80 Girth …
X80 pipeline steels were employed to investigate the effects of two different welding processes (swing welding and row welding) on the quality of weld joints.
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Possibilities of using X80, X100, X120 high-strength steels …
The mechanical properties of the steel according to PN-EN ISO 3183:2013(E) ... Basic mechanical parameters of X80, X90, X100, X120 steels. Steel grade Yield strength, R t0.5 [MPa] Tensile strength, R m [MPa] ... X80ME steel in PN-EN-ISO 3183 (PN-EN ISO 3183:2013(E), 2013) was used for the first time in Europe for pipeline construction in the ...
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Microstructure and Property Analysis of X80 Pipeline …
The X80 pipeline steel with good comprehensive mechanical properties is obtained by the comprehensive strengthening methods of solid solution strengthening, fine grain …
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Mechanical Properties of High‐Nb X80 Steel Weld Pipes for …
In this work, the chemical composition and mechanical properties of high-Nb X80 grade steel pipes with a diameter of ϕ 1,219 mm and a wall thickness of 22 mm, which are …
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Mechanical Properties and Component Behaviour of X80 …
The paper discusses the development and processing of hot rolled X80 coil material and its conversion into thick-walled helical seam welded pipes. Microstructure, texture and mechanical properties of strips and pipes produced are characterized and compared. High strength characteristics and good deformability as a result of the fine homogenous mainly …
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