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Cavitation erosion behavior of Inconel 690 alloy
Materials Science and Engineering: A, 2008 The cavitation erosion behavior of Inconel 690 alloy was investigated using 20-kHz vibratory cavitation test equipment and analyzed by scanning electron microscopy (SEM). To clarify the development of cavitation damage with time, scanning electron photographs were recorded for various test durations, where the time was measured from the commencement of
Jie-Hao Chen, Weite Wu
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Effects of PbO on the repassivation kinetics of alloy 690
Corrosion Science, 2006 Effects of PbO on the repassivation kinetics of alloy 690 were examined to elucidate the reason why the alloy, otherwise immune, is susceptible to stress corrosion cracking (SCC) in high temperature water contaminated with a small amount of Pb compounds.
Ahn, S +3 more
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Low Cycle Fatigue of Alloy 690 in the PWR Environment
Volume 2: Design & AnalysisAbstract Environmentally Assisted Fatigue (EAF) is one of the concerns for the extended operation of nuclear power plants. Over time, certain components experience thermal cycling while being exposed to the chemically active environment of Pressurized Water Reactors (PWRs).
Kushal Gowda Jayaram +4 more
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Corrosion behavior for Alloy 690 and Alloy 800 tubes in simulated primary water
Corrosion Science, 2013Abstract Corrosion behavior for Alloy 690 and Alloy 800 in simulated primary water is studied by open-circuit potential (OCP) measurement, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Rise of pressure and temperature lead to negative shift of corrosion potential for both Alloy 690 and Alloy 800. EIS results show that
Jianqiu Wang
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Carbide Faceting in Alloy 690: HRTEM Study
Materials Performance and Characterization, 2020Abstract Alloy 690 (Unified Numbering System [UNS] No. 6690) in thermally treated (TT) condition is an advanced steam generator tubing material that offers high corrosion resistance with tailored carbide morphology and chromium concentration adjacent to the grain boundary.
Sumita Santra +3 more
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Corrosion Performance of Alloy 690
CORROSION 1989, 1989Abstract Alloy 690 steam generator tubing with continuous grain boundary carbides has consistently the lowest caustic stress corrosion rates at 332-343°C. This microstructure is effected by mill annealing at >1050°C and subsequent thermal treatment for 5-20 h at 725°C.
R. G. Aspden, T. F. Grand, D. L. Harrod
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SCC of Alloy 690 and Its Weld Metals
CORROSION 2012, 2011Abstract Extensive SCC growth rate testing of Alloy 690 base metal, HAZ and weld metal was performed in representative PWR primary water at 290 to 360 °C. Intergranular cracking was observed in all materials. Growth rates as high as 1.2 x 10-6 mm/s were observed in the S-L orientation with microstructural banded material after cold ...
Peter L. Andresen +2 more
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Microstructural and corrosion aspects of alloy 690
British Corrosion Journal, 1999AbstractUndissolved particles in alloy 690 were identified as titanium nitrides with a hexagonal crystal structure. On subsequent thermal treatment of the alloy these inclusions were found to act as preferred sites for the precipitation of chromium carbide.
R.S. Dutta, R. Tewari
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Microstructural characterization of inconel alloy 690
Proceedings, annual meeting, Electron Microscopy Society of America, 1988Inconel 690 is a nickel-base superalloy which, because of its superior corrosion resistance, is being considered as a substitute for Inconel 600. The composition of Alloy 690 is nominally 30wt.%Cr-10wt.%Fe-0.3wt.%Ti-bal Ni. This alloy is generally used in the thermally treated condition: solution anneal in the range 1030-1120*C for ∼0.07-lh followed by
M. G. Burke, B. Z. Hyatt
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