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Thermo-mechanical analysis of laser welding of Grade 91 steel plates
Optik, 2021Abstract Generation of residual stresses and distortion in weld component is a major concern in Grade 91 steel thin plates. In the present study, FEM based Laser welding analysis of Grade 91 steel is carried out for 3 thick plates using SYSWELD software.
M Zubairuddin, Baharin Ali
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Thermal analysis of Laser welding of Grade 91 steel
Materials Today: Proceedings, 2022M Zubairuddin, Baharin Ali
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Assessment of the Tempering Behavior of Grade 91 Steel
Materials Performance and Characterization, 2013Abstract At any point in the fabrication and installation of Grade 91 components, undesirable metallurgical conditions can develop as a result of incorrect heat treatment. Industry techniques for locating and evaluating these microstructures using nondestructive methods are necessary.
Jonathan Parker +2 more
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Characterisation of the Microstructure Evolution of Aged Grade 91 Steel
Volume 6: Materials and Fabrication, 2020Abstract Grade 91 steel has high creep strength and has been used as the material of piping in 600°C USC power plants in China. The Grade 91 materials used in actual power plants are useful in estimating the changes of material properties caused by long-term aging and damage at low stress conditions.
Chang Che +4 more
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Performance of Grade 91 Steels in Boiler Applications
CORROSION 2005, 2005Abstract Advanced steels are finding increased use in high-energy applications. These steels are metallurgically more complex than the traditional chromium-molybdenum based alloys and this complexity introduces challenges to fabricators and operators. Key issues associated with using Grade 91 steel (9% Chromium creep resistant steel) are
W. Weiss, J. Parker
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Dissimilar Metal Welds in Grade 91 Steel
Advances in Materials Technology for Power Plants, 2016Abstract Unpredictable failures near the phase boundary in Grade 91 dissimilar metal welds (DMW) with nickel based filler metals represent a significant problem for the power generation industry. In order to determine the root cause for these failures, it is necessary to understand the formation of the microstructure in the weld regions ...
Michael W. Kuper +3 more
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Evaluation of the creep cavitation behavior in Grade 91 steels
International Journal of Pressure Vessels and Piping, 2016Abstract Even in properly processed Grade 91 steel, the long term performance and creep rupture strength of base metal is below that predicted from a simple extrapolation of short term data. One of the mechanisms responsible for this reduction in strength is the development of creep voids.
J.A. Siefert, J.D. Parker
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Evaluation of Creep Deformation Property of Grade 91 Steels
Volume 6B: Materials and Fabrication, 2015Creep deformation property of Grade T91 steels over a range of temperatures from 550 to 625°C was analyzed by means of the empirical creep equation reported in the previous study [1]. The creep equation consists of four time dependent terms and one constant and time to rupture is estimated as a time to total strain of 10%.
Kazuhiro Kimura +2 more
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Phase transformation behavior of Grade 91 ferritic steel
Materials Science and Engineering: A, 2009The phase transformation behavior of Grade 91 steel, which is an advanced ferritic steel, has been investigated using differential thermal analysis (DTA). In our DTA experiments, disk-shaped samples were normalized at 1080 °C, and then tempered at temperatures between +10 ° C and -40 °C of the ferrite to austenite transformation temperature (A c1 ...
T. Tokunaga, K. Hasegawa, F. Masuyama
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A Summary of 10 Years Research on Grade 91 and Grade 92 Steel
Advances in Materials Technology for Power Plants, 2019Abstract In response to the strong needs for the life assessment of various components in fossil power plants, studies on Grade 91 and Grade 92 steels have been jointly performed by EPRI and CRIEPI for a last decade. These studies have been covering the effects of load variation (creep- fatigue) and stress multiaxiality as well as the ...
Yukio Takahashi +3 more
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