The Structure and Properties of Hardened Stainless Steels with a Shape Memory Effect

S. V. Afanasiev; E. G. Volkova; V. V. Sagaradze

doi:10.17804/2410-9908.2015.6.019-026

S. V. Afanasiev, E. G. Volkova, V. V. Sagaradze

THE STRUCTURE AND PROPERTIES OF HARDENED STAINLESS STEELS WITH A SHAPE MEMORY EFFECT

DOI: 10.17804/2410-9908.2015.6.019-026

A possibility of obtaining the shape memory effect has been investigated as a result of γ→ε→γ transformations in stainless steels hardened by VC carbides. Age hardening conditions at 650 and 720 °C for stainless steels containing (in mass %) 0.20 – 0.35 C, 1 V, 3 – 4 Si, 9 and 13 – 14 Cr are presented. The values of reversible strain e determined after heating to 400 °C in specimens preliminarily deformed by 3.5 – 4 % vary from 0.15 to 2.7 % depending on the composition of the steels and the conditions of stabilizing and destabilizing aging.

Keywords: shape memory effect, stainless steel, VC carbide, martensite transformation, ε-phase, electron microscopy

Bibliography:

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С. В. Афанасьев, Е. Г. Волкова, В. В. Сагарадзе

СТРУКТУРА И СВОЙСТВА УПРОЧНЕННЫХ НЕРЖАВЕЮЩИХ СТАЛЕЙ С ЭФФЕКТОМ ПАМЯТИ ФОРМЫ

Исследована возможность получения эффекта памяти формы (ЭПФ) в результате γ→ε→γ превращений в стареющих нержавеющих сталях, упрочняемых карбидами VC. Представлены режимы упрочняющего старения при 650 и 720 °С нержавеющих сталей, преимущественно содержащих (мас. %) 0,20–0,35 С, 1 V, 3–4 Si, 9 и 13–14 Cr. Значения обратимой деформации е (величины ЭПФ), определенные после нагрева до 400 °С в предварительно деформированных на 3,5–4 % образцах, изменяются от 0,15 до 2,7 % в зависимости от состава сталей и режимов стабилизирующего и дестабилизирующего старения.

Ключевые слова: эффект памяти формы, стареющие нержавеющие стали, карбид VC, мартенситное превращение, ε-фаза, электронная микроскопия

Библиография:

The shape memory effect in high-strength precipitation-hardening austenitic steels / V. V. Sagaradze, Ye. V. Belozerov, N. L. Pecherkina, M. L. Mukhin, Yu. R. Zaynutdinov // Materials Science and Engineering: A. – 2006. – Vol. 438–440. – P. 812–815. – DOI:10.1016/j.msea.2006.01.113.
A new approach to creation of high-strength austenitic steels with a controlled shape memory effect / V. V. Sagaradze, E. V. Belozerov, M. L. Mukhin, Yu. R. Zainutdinov, N. L. Pecherkina, V. A. Zavalishin // The Physics of Metals and Metallography. – 2006. – Vol. 101, iss. 5. P. 506–512. – DOI: 10.1134/S0031918X06050127.
Controlled shape memory effect in high strength Mn and Cr-Mn steels / V. V. Sagaradze, M. L. Mukhin, E. V. Belozerov, Yu. R. Zainutdinov, N. L. Pecherkina, Yu. I. Filippov //Materials Science and Engineering: A. – 2008. – Vol. 481–482. – P. 742–746. – DOI: 10.1016/j.msea.2007.02.155.
High-strength precipitation-hardening austenitic Fe-Mn-V-Mo-C steels with shape memory effect / V. V. Sagaradze, I. I. Kositsyna, M. L. Muкhin, E. V. Belozerov, Yu. R. Zaynutdinov // Materials Science and Engineering: A. – 2008. – Vol. 481–482. – P. 747–751. – DOI: 10.1016/j.msea.2007.02.158.
Martensitic transformations γ-ε(α) and the shape-memory effect in aging high-strenght manganese austenitic steels / V. V. Sagaradze, V. I. Voronin, Yu. I. Filippov, V. A. Kazantsev, M. L. Mukhin, E. V. Belozerov, N. L. Pecherkina, N. V. Kataeva, A. G. Popov // The Physics of Metals and Metallography. – 2008. –Vol. 106, iss.6. – P. 630–640. – DOI: 10.1134/S0031918X08120120.
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Effect of pre-deformation at room temperature on shape memory properties of stainless type Fe-15Mn-5Si-9Cr-5Ni-(0.5–l.0)NbC alloys / Z. Z. Dong, S. Kajiwara, T. Kikuchi, T. Sawaguchi // Acta Materialia. – 2005. – Vol. 53, iss. 15. – P. 4009–4018. – DOI: 10.1016/j.actamat.2005.04.035.
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Библиографическая ссылка на статью

Afanasiev S. V., Volkova E. G., Sagaradze V. V. The Structure and Properties of Hardened Stainless Steels with a Shape Memory Effect // Diagnostics, Resource and Mechanics of materials and structures. - 2015. - Iss. 6. - P. 19-26. -
DOI: 10.17804/2410-9908.2015.6.019-026. -
URL: http://dream-journal.org/issues/2015-6/2015-6_59.html
(accessed: 31.10.2024).