Recrystallization Kinetics of Niobium with Submicrocrystalline Structure


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Abstract—Transmission and scanning electron microscopy have been used to study the kinetics of recrystallization at 400 and 700°C of niobium in which a submicrocrystalline structure was created as a result of high-pressure torsion. It has been shown that the recrystallization at 700°C occurs in accordance with the kinetics of normal grain growth. A decrease in the rate constant with an increase in the duration of annealing to more than 1 h is due to textural changes, rather than the completion of primary recrystallization. Upon the low-temperature recrystallization (400°C), a stable fine-grained structure is formed, which remains almost unchanged with increasing duration of annealing.

Sobre autores

L. Voronova

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Autor responsável pela correspondência
Email: highpress@imp.uran.ru
Rússia, Ekaterinburg, 620108

M. Degtyarev

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Email: highpress@imp.uran.ru
Rússia, Ekaterinburg, 620108; Ekaterinburg, 620002

T. Chashchukhina

Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Email: highpress@imp.uran.ru
Rússia, Ekaterinburg, 620108; Ekaterinburg, 620002

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