Recrystallization Kinetics of Niobium with Submicrocrystalline Structure

被引:4
作者
Voronova, L. M. [1 ]
Degtyarev, M. V. [1 ,2 ]
Chashchukhina, T. I. [1 ,2 ]
机构
[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia
[2] Ural Fed Univ, Ekaterinburg 620002, Russia
关键词
niobium; submicrocrystalline structure; recrystallization; kinetics; grain growth; texture; HIGH-PRESSURE TORSION; LOW-TEMPERATURE RECRYSTALLIZATION; THERMAL-STABILITY; DEFORMATION; EVOLUTION; BEHAVIOR; METALS; NICKEL; SHEAR; IRON;
D O I
10.1134/S0031918X19100144
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Transmission and scanning electron microscopy have been used to study the kinetics of recrystallization at 400 and 700 degrees 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 degrees 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 degrees C), a stable fine-grained structure is formed, which remains almost unchanged with increasing duration of annealing.
引用
收藏
页码:949 / 955
页数:7
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