Thermomechanical Properties of Ni50Ti50 Alloy after ECAE and High-Pressure Torsion

被引：0

作者：

V. S. Kalashnikov

V. A. Andreev

V. V. Koledov

D. V. Gunderov

A. V. Petrov

V. G. Shavrov

D. V. Kuchin

R. M. Gizatullin

机构：

[1] V. A. Kotel’nikov Institute of Radio Engineering and Electronics,

[2] Russian Academy of Sciences,undefined

[3] Industrial center MATÉK-SPF,undefined

[4] JSC,undefined

[5] Institute of Molecule and Crystal Physics,undefined

[6] Ural Federal Research Center of the Russian Academy of Sciences,undefined

[7] NANO-DENT Research Center,undefined

[8] JSC,undefined

[9] St. Petersburg State University,undefined

[10] A. A. Baikov Institute of Metallurgy and Materials Science,undefined

来源：

Metal Science and Heat Treatment | 2021年 / 63卷

关键词：

phase transitions; shape memory effect; thermoelastic martensitic transformation; equal channel angular extrusion; high-pressure torsion; x-ray diffraction analysis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The thermomechanical properties of shape memory alloy Ni50Ti50 are studied after equal channel angular extrusion, torsion at a pressure of 6 GPa with 0.5 and 2 turns, and subsequent heat treatment (quenching or annealing). Parameters of the thermoelastic phase transformation of specimens in different conditions are determined. X-ray diffraction analysis is performed. It is shown that an increase in the degree of the high-pressure torsional deformation to two turns increases the degree of specimen structure amorphization and critical stresses to 3000 MPa, while deformation up to half a turn makes it possible to increase reversible bending strain to 16% at stresses up to 1210 MPa.

引用

页码：258 / 263

页数：5

共 28 条

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