Structure and Properties of a Welded Joint of a Corrosion-Resistant Nickel Alloy Used for Work in Molten Salts

In this paper, an isothermal diagram of the second phase formation in the Hastelloy G35 alloy was constructed to understand possible phase transformations during welding. A welded joint has been studied in three areas: fusion zone (FZ), the heat affected zone (HAZ), and the base metal (BM). The FZ i...

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Bibliographic Details
Published in:Russian physics journal 2024-09, Vol.67 (9), p.1463-1469
Main Authors: Chuquimarca, P. K., Pyrin, D. V., Ivanov, K. O., Eltysheva, K. S., Zhilyakov, A. Yu, Belikov, S. V.
Format: Article
Language:English
Subjects:
Base metal
Condensed Matter Physics
Corrosion resistance
Corrosion resistant alloys
Dendritic structure
Hadrons
Hardness
Hastelloy (trademark)
Heat affected zone
Heavy Ions
Intermetallic compounds
Lasers
Mathematical and Computational Physics
Molten salts
Nuclear Physics
Optical Devices
Optics
Phase transitions
Photonics
Physics
Physics and Astronomy
Sigma phase
Temperature effects
Theoretical
Welded joints
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Summary:In this paper, an isothermal diagram of the second phase formation in the Hastelloy G35 alloy was constructed to understand possible phase transformations during welding. A welded joint has been studied in three areas: fusion zone (FZ), the heat affected zone (HAZ), and the base metal (BM). The FZ is represented by a dendritic structure; in addition, σ-phase intermetallic compounds are present in the FZ and HAZ. Furthermore, the FZ and BM present similar hardness values, while the hardness increases in the HAZ. It has been established that thermal effects for different areas are characterized by different rates of increase up to 650°C.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-024-03269-z