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Effect of High-Temperature Annealing on the Microstructure of the W–Cr–Y Alloy.

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Title: Effect of High-Temperature Annealing on the Microstructure of the W–Cr–Y Alloy.
Authors: Nikitin, A. A.1,2 (AUTHOR) nikitin@itep.ru, Rogozhkin, S. V.1,2 (AUTHOR), Ogorodnikova, O. V.1,2 (AUTHOR), Lyamkin, P. V.1 (AUTHOR)
Source: Physics of Atomic Nuclei. Dec2025, Vol. 88 Issue 9, p1784-1790. 7p.
Subjects: Microstructure, Recrystallization (Metallurgy), Heat treatment, Yttrium oxides, Transmission electron microscopy, Alloys, Atom-probe tomography, Grain size
Abstract: Atom probe tomography and transmission electron microscopy have been used to analyze changes in the microstructure, grain size, and local chemical composition of the W–Cr–Y alloy as a result of vacuum annealing at temperatures of 1000 and 1200°C. In the initial state, the alloy is characterized by grains with an average size of ~1 µm. Particles enriched in yttrium and oxygen with sizes ranging from 10 to 180 nm are located along the grain boundaries. The annealing leads to recrystallization of the material, resulting in decrease in the average grain size to 100 nm at 1000°C and to 270 nm at 1200°C. Additionally, the dissolution of yttrium oxides and the formation of new nanoscale clusters in the intragranular region have been observed. The composition and number density of these clusters depend on the annealing conditions. [ABSTRACT FROM AUTHOR]
Copyright of Physics of Atomic Nuclei is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Atom probe tomography and transmission electron microscopy have been used to analyze changes in the microstructure, grain size, and local chemical composition of the W–Cr–Y alloy as a result of vacuum annealing at temperatures of 1000 and 1200°C. In the initial state, the alloy is characterized by grains with an average size of ~1 µm. Particles enriched in yttrium and oxygen with sizes ranging from 10 to 180 nm are located along the grain boundaries. The annealing leads to recrystallization of the material, resulting in decrease in the average grain size to 100 nm at 1000°C and to 270 nm at 1200°C. Additionally, the dissolution of yttrium oxides and the formation of new nanoscale clusters in the intragranular region have been observed. The composition and number density of these clusters depend on the annealing conditions. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Physics of Atomic Nuclei is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Dec2025
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