Results 131 to 140 of about 541 (179)
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Precipitate phases in normalized and tempered ferritic/martensitic steel P92
Journal of Nuclear Materials, 2015Abstract Ferritic/martensitic steel P92 is a promising candidate for cladding and duct applications in Sodium-Cooled Fast Reactor. The precipitate phases of the P92 steel normalized at 1323 K (1050 °C) for 30 min and tempered at 1038 K (765 °C) for 1 h have been investigated using transmission electron microscopes.
Yinzhong Shen
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Microstructural evolution of P92 steel in IN740H/P92 dissimilar weld joints during creep deformation
Materials Science and Engineering: A, 2021Abstract In this study, we report the microstructural development of heat-affected zone in P92 heat-resistant steel during creep deformation in cross-weld specimens with dissimilar weld joints between IN740H/P92 materials. Different specimens were prepared via the interruption of creep testing at 50, 70, and 90% of the measured creep-rupture life and
Wi-Geol Seo +6 more
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Creep rupture behaviour of P92 steel weldment
Engineering Failure Analysis, 2011Abstract This paper describes the creep rupture behaviour, hardness distribution and microstructure of weldment made by submerge arc welding for W strengthened P92 steel. The cross-weld creep tests were carried out at 923 K and at stress ranging from 100 to 130 MPa. For stress below 120 MPa, weld-joints ruptured by the type IV crack, which located in
Wang Xue +4 more
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Characteristics of Residual Stress in P92 Steel Welds
Advanced Materials Research, 2007Welding residual stress has important influence on the performance of engineering components. In this paper, the residual stress and FWHM were measured by X-ray diffraction method to investigate characteristics for P92 steel welds. The aim of the study is to estimate the residual stress and FWHM distribution characteristics.
Keun Bong Yoo +3 more
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Failure Analysis of Weld Crack of P92 Steel
Key Engineering Materials, 2017In order to find out the causes of weld cracks in the main steam pipe welded joint of a power plant, a series of relevant tests are specially formulated, which include room temperature tensile and high temperature tensile test, room temperature impact test, the crack tip metallographic observation, crack fracture scanning electron microscope ...
Shao Hua Yin +5 more
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Microstructural Evolution of P92 Steel during Creep
Advances in Materials Technology for Power Plants, 2010Abstract In this paper, the microstructural evolution of P92 steel were studied in the viewpoint of degradation mechanism based on the creep rupture experiment results obtained at elevated temperature by means of macroscopic, metallographic, electronic microscope, energy spectrum, XRD and TEM examination.
Qinxin Zhao +3 more
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Microstructure and creep behaviour of P92 steel after HPT
Materials Science and Engineering: A, 2018Abstract The influence of the application of severe plastic deformation on microstructure changes and creep deformation behaviour was investigated in P92 creep-resistant pipe steel. P92 steel in its as-received state, with a microstructure typical of tempered martensite, was subjected to high-pressure torsion at room temperature.
Petr Kral +7 more
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Aging Mechanism of Welded Joints of P92 Steels
Volume 3: Design, Materials and Manufacturing, Parts A, B, and C, 2012This paper concerns the study of aging mechanism of welded joints of P92 steels. Alloys like P92 steel are commonly used in ultra-supercritical (USC) power plants. Depending on the service conditions, the welded joints may become a critical weak link between component connections, showing crack openings and even failures.
Changzheng Huang +3 more
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Precipitate Phases in Normalized Ferritic/Martensitic Steel P92
Key Engineering Materials, 2018Precipitate phases in the P92 F/M steel after normalization at 1323 K (1050 °C) for 30 min followed by air cooling to room temperature have been investigated by transmission electron microscopy (TEM). Three types of phases consisting of M3C, MX and M2C have been identified.
Zhi Qiang Xu +3 more
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Effect of temperature on fatigue crack growth in P92 steel
Metals and Materials International, 2003Fracture at high temperature has become a critical problem for such high temperature components as those used in power plants or oil refinery plants, because both high operating temperature and pressure are required for better thermal efficiency. Therefore, it is very important to approach such problems from the viewpoint of high temperature material ...
Byeong Soo Lim +2 more
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