Recrystallization Kinetics of Niobium with Submicrocrystalline Structure

被引：0
|
作者：
L. M. Voronova
M. V. Degtyarev
T. I. Chashchukhina
机构：
[1] Mikheev Institute of Metal Physics,
[2] Ural Branch,undefined
[3] Russian Academy of Sciences,undefined
[4] Ural Federal University Named after the First President of Russia B.N. Yeltsin,undefined
来源：
Physics of Metals and Metallography | 2019年 / 120卷
关键词：
niobium; submicrocrystalline structure; recrystallization; kinetics; grain growth; texture;
D O I：
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学科分类号：
摘要：
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.
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页码：949 / 955
页数：6
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