Results 201 to 210 of about 1,533 (254)

Microstructural characterization of inconel alloy 690

Proceedings, annual meeting, Electron Microscopy Society of America, 1988
Inconel 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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New Etching Procedure for Alloy 690 Ein neues Ätzverfahren für die Legierung 690

Practical Metallography, 1998
Alloy 690 for steam generator tubing is now etched in bromine-methanol for the microstructural examination prior to delivery. A number of etching methods have been tested to find an alternative procedure that is highly reproducible, that clearly reveals all grain boundaries and carbides and that does not involve too harmful chemicals.
Agneta Östberg, Johan Frodigh
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Corrosion Performance of Alloy 690

CORROSION 1989, 1989
Abstract 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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Microstructural and corrosion aspects of alloy 690

British Corrosion Journal, 1999
AbstractUndissolved 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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SCC of Alloy 690 and Its Weld Metals

CORROSION 2012, 2011
Abstract 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, Martin M. Morra, Kawaljit Ahluwalia   +2 more
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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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Constitutive model for nickel alloy 690 (Inconel 690) at various strain rates and temperatures

International Journal of Plasticity, 2016
no ...
Blaizot, Jérôme, Chaise, Thibaut, Nélias, Daniel, Perez, Michel, Cazottes, Sophie, Chaudet, Philippe   +5 more
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Wear behavior of plasma nitrided inconel 690 alloy

AIP Conference Proceedings, 2019
In this study an effort has been made for the plasma ion nitriding (PIN) of inconel 690 alloy. After plasma nitriding, samples were investigated by various characterization techniques such as; micro-hardness measurement, X-ray diffraction analysis and pin on disk wear test.
Ravindra Kumar, Yogesh Chandra Sharma, Vajja Vidyasagar, Dheeraj Bhardwaj   +3 more
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Research on M23C6 precipitation of 690 alloy

2014
Precipitation M23C6 of 690 alloy was studied in this paper. Firstly, M23C6 precipitation and evolution of chromium-depleted zone of 690 alloy during TT were studied. Evolution of chromium-depleted zone of 690 alloy was affected markedly by TT.The test results showed that the lowest chromium concentration in chromium-depleted zone raised dramatically ...
Song Zhigang, Feng han, Zheng Wenjie, Zhang Lihong, Ma Mingjuan, Sang Weijun   +5 more
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Degradation of Alloy 690 After Relatively Short Times

Corrosion, 2016
The purpose of this work is to understand quantitative processes which underlie the initiation of stress corrosion cracking (SCC) of cold-worked, thermally treated Alloy 690 after long-term exposures in high-temperature water. Long-term stress corrosion cracking initiation tests up to 34,484 h have been performed on cold-worked, thermally treated Alloy
Koji Arioka, Roger W. Staehle, T. Yamada, T. Miyamoto, T. Terachi   +4 more
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