Role of structure refinement and electropulse current in the mechanical behavior of shape memory alloy

被引：0

作者：

Stolyarov V.V. ^{[1
,2
]}

机构：

[1] Blagonravov Institute of Machines Science of the Russian Academy of Sciences, Malyi Kharitonievskii per. 4, Moscow

[2] National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 31, Kashirskoe shosse, Moscow

来源：

Journal of Machinery Manufacture and Reliability | 2015年 / 44卷 / 08期

关键词：

deformation; mechanical properties; microstructure; pulse current;

D O I：

10.3103/S1052618815080063

中图分类号：

学科分类号：

摘要：

The influence of structure refinement and electropulse current on strength, ductility, and deformability during cold rolling of over stoichiometric shape memory TiNi alloy is investigated. It was shown that strength increases but ductility decreases with grain refinement to nanosize scale. However, deformability and ductility may be enhanced significantly for electropulse and electroplastic processing. The introduction of pulse current at tension is accompanied by a stress jump, caused by phase transformation and electroplastic effects. © 2015, Allerton Press, Inc.

引用

页码：704 / 709

页数：5

共 11 条

[1]

Koch C., Optimization of strength and ductility in nanocrystalline and ultrafine grained metals, Scripta Mater., 49, pp. 657-662, (2003)

[2]

Valiev R.Z., Recent developments of SPD processing for fabrication of bulk nanostructured materials, Mater. Sci. Forum, 426-432, pp. 237-244, (2003)

[3]

Baranov Y.V., Troitskii O.A., Avraamov Y.S., Shlyapin A.D., Fizicheskie osnovy electroimpulsnoi i electroplasticheskoi obrabotok i novye materialy, (2001)

[4]

Khmelevskaya I., Prokoshkin S., Trubitsyna I., Belousov M., Dobatkin S., Tatyanin E., Korotitskiy A., Brailovski V., Stolyarov V., Prokofiev E., Structure and properties of Ti-Ni-based alloys after equal-channel angular pressing and high-pressure torsion, Mater. Sci. Eng. A, 481-482, pp. 119-122, (2008)

[5]

Stolyarov V., Ugurchiev U., Trubitsyna I., Prokoshkin S., Prokofiev E., Severe electroplastic deformation of TiNi alloy, J. High Pressure Phys. Techn., 4, 16, pp. 64-67, (2006)

[6]

Stolyarov V., Nanostructured shape memory TiNi alloy processed by severe electroplastic deformation, Mater. Sci. Forum, 584-586, pp. 507-512, (2008)

[7]

Conrad H., Electroplasticity in metals and ceramics, Mater. Sci. Eng. A, 287, pp. 276-287, (2000)

[8]

Stolyarov V., Deformability and nanostructuring of shape memory TiNi alloys during the electroplastic rolling, Mater. Sci. Eng. A, 503, pp. 18-20, (2009)

[9]

Trubitsyna I.B., Prokoshkin S.D., Korotitskii A.V., Inaekyan K.E., Stolyarov V.V., Makushev S.Y., Khmelevskaya I.Y., Chirkova A.V., Bugaev A.V., Levin D.G., Ugurchiev U.K., Structure formation in TiNi alloys processed by intensive plastic and electroplastic deformation, Zh. Funkts. Mater., 1, 2, pp. 66-71, (2007)

[10]

Gleiter H., Nanostructured materials: basic concepts and microstructure, Acta Mater., 48, pp. 1-29, (2000)

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