Effect of Annealing Temperature on the Recrystallization of Nickel with Different Ultradisperse Structures

被引：20
|
作者：
Krasnoperova, Yu. G. [1 ]
Degtyarev, M. V. [1 ]
Voronova, L. M. [1 ]
Chashchukhina, T. I. [1 ]
机构：
[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ul S Kovalevskoi 18, Ekaterinburg 620990, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2016年 / 117卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
nickel; shear under pressure; submicrocrystalline structure; recrystallization; grain growth; SEVERE PLASTIC-DEFORMATION; STRUCTURE EVOLUTION; THERMAL-STABILITY; HIGH-PRESSURE; PURE IRON; COPPER; COLD;
D O I：
10.1134/S0031918X16030078
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Various structures (cellular, mixed, and submicrocrystaline) were realized in samples of single-crystal nickel (99.98 wt % purity) using shear deformation under a pressure at room temperature. The presence of microcrystallites in the nickel structure after deformation was shown to lead to the development of recrystallization during annealing in the temperature range of 250-350A degrees C via both continuous and discontinuous mechanisms. In the case of the continuous mechanism, the microcrystallites formed during deformation are recrystallization centers; in the case of the discontinuous mechanism, the recrystallization centers are the thermoactivated nuclei formed during annealing. A nonmonotonous dependence of the average recrystallized-grain size on the heating temperature was found and causes for this dependence are discussed.
引用
收藏
页码：267 / 274
页数：8
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