EFFECT OF HIGH-TEMPERATURE ANNEALING ON THE MICROSTRUCTURE OF W–CR–Y ALLOY
https://doi.org/10.56304/S2079562925060193
EDN: PRDQRN
Abstract
In this work, results of atom probe tomography and transmission electron microscopy of changes in the microstructure, grain sizes and chemical composition of the W–Cr–Y alloy as a result of vacuum annealing at temperatures of 1000°C and 1200°C, are represented. In the as-received condition of the alloy average grain size is equal to 1 µm and the grain boundaries are decorated with nanoscale (10 to 180 nm) particles enriched with yttrium and oxygen. Annealing causes recrystallization of the material with a decrease in the average grain size down to 100 nm. In addition, re-dissolution of yttrium oxides and the formation of nanosized clusters are observed, the composition and number density of which depend on the annealing conditions.
About the Authors
A. A. Nikitin
National Research Centre “Kurchatov Institute”;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
S. V. Rogozhkin
National Research Centre “Kurchatov Institute”;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
O. V. Ogorodnikova
National Research Centre “Kurchatov Institute”;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
P. V. Lyamkin
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
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For citations:
Nikitin A.A., Rogozhkin S.V., Ogorodnikova O.V., Lyamkin P.V. EFFECT OF HIGH-TEMPERATURE ANNEALING ON THE MICROSTRUCTURE OF W–CR–Y ALLOY. Nuclear Physics and Engineering. 2025;16(6):887-894. (In Russ.) https://doi.org/10.56304/S2079562925060193. EDN: PRDQRN
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