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Structure and properties of nickel-based alloy EP718 in the process of manufacturing
https://doi.org/10.22349/1994-6716-2019-100-4-42-52
Abstract
The influence of the semi-finished products manufacturing process (forging, solution annealing and ageing) on the structure and corrosion properties of the EP718 nickel-based alloy (KhN45MVTYuBR) used in the oil and gas industry is investigated. The corrosion-electrochemical properties of the alloy were determined using gravimetric and electrochemical techniques. Microstructure was studied by optical and transmission electron microscopy. It is shown that the EP718 alloy in the delivery state (without heat treatment) has the highest corrosion resistance, and corrosion properties degrade during subsequent solution annealing at 1080°C.
About the Authors
E. L. Gyulikhandanov
Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
Dr Sc (Eng)
29 Polytechnicheskaya St, 195251 St Petersburg
E. L. Alekseeva
Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
29 Polytechnicheskaya St, 195251 St Petersburg
A. V. Shakhmatov
Weatherford Ltd
Russian Federation
Russian Federation
Cand Sc. (Eng)
4 Fourth Lesnoy Lane, 125047 Moscow
A. S. Loshachenko
St Petersburg State University
Russian Federation
Russian Federation
7–9 University Embankment, 199034 St Petersburg
A. A. Lapechenkov
Peter the Great St Petersburg Polytechnic University
Russian Federation
Russian Federation
29 Polytechnicheskaya St, 195251 St Petersburg
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Review
For citations:
Gyulikhandanov E.L., Alekseeva E.L., Shakhmatov A.V., Loshachenko A.S., Lapechenkov A.A. Structure and properties of nickel-based alloy EP718 in the process of manufacturing. Voprosy Materialovedeniya. 2019;(4(100)):42-52. (In Russ.) https://doi.org/10.22349/1994-6716-2019-100-4-42-52
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