Results 31 to 40 of about 468 (174)
Elimination and Control of δ Ferrite in M50NiL Bearing Steel
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 In this study, the effects of the annealing temperature and holding time on the δ ferrite content in M50NiL bearing steel are evaluated. The results indicate that when the temperature increases from 900°C to 1200°C, the δ ferrite content increases as a result of the increase in the Cr equivalent in the matrix, which decreases the stability of austenite
Bing Li +8 more
wiley +1 more source
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 Long‐distance pipelines are threatened by a variety of natural geological hazards. A stress monitoring system driven by the strain‐stress solution algorithm was proposed; it can achieve real‐time maximum axial stress measurement by installing vibrating wire gauges (VWGs) on the surface of the pipe.
Xinze Li +4 more
wiley +1 more source
Journal of Materials Research and Technology, 2023 The stress corrosion cracking (SCC) behavior of X80 pipeline steel under Desulfovibrio desulfurican (D. desulfurican), alternating current (AC) and cathodic protection (CP) was studied by the constant load tests and slow strain rate tensile (SSRT) test ...
Qi Fu +5 more
doaj +1 more source
Simulation analysis of X80 pipeline steel welding
Metalurgija, 2023 In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding. The peak temperature of different passes was compared, and the change trend of temperature field in the welding ...
Li, M. M. +4 more
openaire +2 more sources
International Journal of Electrochemical Science, 2017 In buried pipeline steel, soil environmental factors cause corrosion, which greatly affects the safe operation of pipe networks. The effects of HCO3− on the corrosion behaviour of X80 pipeline steel in Liaohe Oilfield simulated soil solution was ...
Fei Xie +4 more
doaj +1 more source
You-qi chuyun, 2020 In the China–Russia Eastern Gas Pipeline Project, large diameter (OD 1 422 mm), high pressure (12 MPa) and high grade steel (X80) pipelines were used to transport huge amounts of natural gas, so as to meet the needs of energy strategy.
Yunlan YANG +7 more
doaj +1 more source
Study on Repairing and Reinforcing Effect of Steel Epoxy Sleeve on Girth Weld Defects
Shiyou jixie, 2022 In order to study the repairing and reinforcing effect of steel epoxy sleeve on girth weld defects of X80 pipeline,ANSYS is applied to establish the nonlinear finite element models of X80 pipeline with girth weld defects and pipeline reinforced by steel ...
Yu Dongliang +4 more
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Hydrogen embrittlement behavior of typical hydrogen-blended natural gas pipeline steel
You-qi chuyun, 2022 Currently, it is most economical to transport hydrogen with the existing natural gas pipelines by blending it into the natural gas among the storage and transportation technologies of hydrogen energy, and thus the transportation technology of hydrogen ...
Yu-xing LI +8 more
doaj +1 more source
Tempering microstructure and mechanical properties of pipeline steel X80
Transactions of Nonferrous Metals Society of China, 2009 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 ℃ and 600 ℃ is bainitic ferrite (BF)+granular bainite (GB), and partial ferrite laths in BF merge and broaden.
Jing NIU +5 more
openaire +1 more source
Influence of Hydrogen Environment on Mechanical Properties of High-Grade Pipeline Steel
Shiyou jixie, 2023 Under the context of carbon peaking and carbon neutrality targets, hydrogen blending in natural gas pipelines will become the primary means of large-scale, long-distance hydrogen transportation in the future.However, the introduction of hydrogen will ...
Ai Hongni +6 more
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