Results 111 to 120 of about 310 (159)
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Static strain aging behavior of an X100 pipeline steel
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2012Abstract The effect of static strain aging on the microstructure and mechanical properties of an industrially produced X100 pipeline steel was investigated. It was found that strain aging plays an important role in the tensile property and features of stress–strain curves, with the increase of either pre-strain or aging temperature, the strength ...
Wengui Zhao +3 more
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Ductile failure of X100 pipeline steel – Experiments and fractography
Materials & Design, 2013Abstract Ductile failure of X100 pipeline steel is studied. In order to study the effect of anisotropy, triaxiality factor and Lode angle on the failure, a series of specimens with different geometries are tested. Measurements of deformation in three dimensions are done to check the variation of elongation and lateral deformations during loading ...
Rahmatollah Ghajar, Guiseppe Mirone
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Precipitation Behavior and Its Strengthening Effect of X100 Pipeline Steel
Journal of Iron and Steel Research International, 2010Abstract Using TEM (transmisson electron microscopy), electron diffraction, EDX (energy dispersive X-ray) analysis and physicochemical phase analysis, the morphology, crystal structure, size distribution and chemical composition of precipitates in the microstructure of high strength Nb-microalloyed X100 pipeline steel were investigated, and the ...
Yong-Lin Kang
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Effect of coiling temperature on microstructure and properties of X100 pipeline steel
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 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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Girth Welding of X100 Pipeline Steels
4th International Pipeline Conference, Parts A and B, 2002Girth welding trials involving pipes of minimum proof strength 690 MPa (X100) from several linepipe manufacturers have been conducted. Welding consumable selections for the trials were based on background data generated at Cranfield University coupled with potential weld metal mechanical property requirements thought necessary for the implementation of
Mark G. Hudson +3 more
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Welding X100 steels for gas pipelines
Welding International, 2004Abstract The increasing demand for high strength steel (to date not included in the standards for pipe material specifications) for dedicated long distance pipelines for natural gas transportation at high pressure (≥ 10 Mpa) has prompted studies of the overall integrity of both the pipe and the girth welds used, fundamental parts of the structural ...
R Aristotele, L F Di Vito, L Barsanti
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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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Effect of Cooling Process on Microstructure and Mechanical Properties of X100 Pipeline Steel
Steel Research International, 2016Xiao-Guang Zhou +6 more
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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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