Results 151 to 160 of about 541 (179)
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Investigation of Creep Damage and Cavitation Mechanisms in P92 Steels
Advances in Materials Technology for Power Plants, 2013Abstract Contrary to expectations, long-term performance of creep stress enhanced ferritic steels (CSEF) falls short of predictions based on short-term data. This discrepancy is attributed to the formation and growth of creep voids, leading to reduced ductility.
Y. Gu +3 more
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Effect of Aging on the Creep Properties and Microstructural Evolution of P92 Steel
Key Engineering Materials, 2017The P92 steels were aged at 632°C for 500hrs and 1,000hrs, and creep ruptured at 650°C~625°C with stress of 120~110 MPa. The creep rupture life (CRL) of the aged samples was decreased with the aged time. The microstructure of the P92 steel was observed as fine tempered lath with dispersion of Cr-rich M23C6 along various grain boundaries. Upon aging and
Yin Sheng He +3 more
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Influence of tungsten on transformation characteristics in P92 ferritic–martensitic steel
Journal of Alloys and Compounds, 2016Abstract Present study demonstrates by experiments and computation that a fully martensitic microstructure does not form in 9 Cr steels containing 1.9 wt% W (P92). The presence of a magnetic transition prior to the martensitic transformation during fast cooling supports the co-existence of ferrite and martensite.
Raj Narayan Hajra +4 more
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Corrosion behavior of ferritic/martensitic steel P92 in supercritical water
The Journal of Supercritical Fluids, 2009Abstract The corrosion behavior of a ferritic/martensitic steel P92 exposed to supercritical water (SCW) at 500–600 °C and 25 MPa was investigated by means of gravimetry, scanning electron microscope/energy dispersive X-ray spectroscopy and X-ray diffraction.
Kaiju Yin +4 more
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Creep Crack Growth in P92 and P122 Alloy Steel Weldment
Key Engineering Materials, 2005The structures connected by welding are fractured often in Heat Affected Zone (HAZ) when cracks grow under high-temperature and high-pressure conditions. In this study, the creep crack growth tests of P92 and P122 steels were performed and the creep fracture characteristics were evaluated. Degradation rate by cavities was investigated and the influence
C.S. Jeong, Si Yon Bae, Byeong Soo Lim
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Microstructural characterization of oxide scales formed on steels P91 and P92
Materials at High Temperatures, 2011AbstractIn this paper, an in-depth study of steam oxidation of two 9Cr ferritic-martensitic steels (P91 and P92), for advanced power plant, has been carried out. The steels investigated were exposed to a 100% flowing steam environment at 650°C for 1,000 – 3,000 hours.
E.O. Mogire +3 more
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Oxide scale damage and spallation in P92 martensitic steel
Materials at High Temperatures, 2000Abstract9 Cr martensitic steels are widely used in high temperature steam environments for their combination of creep strength and oxidation resistance. These materials are pushed to their limit in the quest for higher efficiencies in boilers and steam turbines and loss of the protective oxide scale may result in premature failure of critical ...
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Elevated Temperature Behavior of Creep and Fatigue in Welded P92 Steel
International Journal of Modern Physics B, 2003Fatigue strength and life of weldment at high temperature is very important for high temperature materials used in power plants. In this study, creep properties of weld metal, HAZ and base metal of P92 steel were evaluated by SP (small punch) creep test method.
Byeongsoo Lim +3 more
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Creep deformation and rupture behaviour of thermal aged P92 steel
Materials at High Temperatures, 2016Creep deformation and rupture behaviour of thermal aged P92 steel have been investigated over a stress range of 110–130 MPa at 923 K. Laves phase was observed in the thermal aged steel. Laves phase predominantly coarsens towards the intra-lath region assisted by substructure within the lath region.
T. Sakthivel +3 more
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