Evolution of the Nickel Structure during Deformation by Shear under High Pressure at 150°C

被引：6

作者：

Degtyarev, M. V. ^{[1
]}

Voronova, L. M. ^{[1
]}

Chashchukhina, T. I. ^{[1
]}

Pilyugin, V. P. ^{[1
]}

Resnina, N. N. ^{[2
]}

机构：

[1] Russian Acad Sci, Ural Branch, Mikheev Inst Met Phys, Ul S Kovalevskoi 18, Ekaterinburg 620990, Russia

[2] St Petersburg State Univ, Univ Skaya Nab 7-9, St Petersburg 199034, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2017年 / 118卷 / 03期

关键词：

nickel; large plastic deformation; dynamic recrystallization; calorimetry; stored energy of deformation; DYNAMIC RECRYSTALLIZATION; THERMAL-STABILITY; TEMPERATURE; TORSION; COLD; HARDNESS;

D O I：

10.1134/S0031918X17030024

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Initial single-crystal nickel deformed by shear under pressure at the temperature of 150 degrees C has been studied. It has been found that, under these conditions, dynamic recrystallization develops in nickel. As a result, after true strain in the range of 4 < e < 9, a heterogeneous structure that consist of recrystallized grains of different defectiveness and microcrystallites is formed. Calorimetric studies have shown that the stored energy varies nonmonotonically with increasing true strain, which is associated with the cyclic character of dynamic recrystallization. In the calorimetric dependence, several peaks of heat release have been revealed that are connected with the nonsimultaneous occurrence of static recrystallization upon heating in nickel with a heterogeneous structure formed upon dynamic recrystallization.

引用

页码：256 / 263

页数：8

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