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The Physics of Metals and Metallography

, Volume 117, Issue 2, pp 160–166 | Cite as

Precipitation-hardening stainless steels with a shape-memory effect

  • V. V. Sagaradze
  • S. V. Afanasiev
  • E. G. Volkova
  • V. A. Zavalishin
Structure, Phase Transformations, and Diffusion

Abstract

The possibility of obtaining the shape-memory effect as a result of the γ → ε → γ transformations in aging stainless steels strengthened by VC carbides has been investigated. Regimes are given for strengthening aging (at 650 and 720°C) for stainless steels that predominantly contain (in wt %) 0.06–0.45C, 1–2V, 2–5Si, 9 and 13–14Cr. The values of reversible deformation e (amount of shape-memory effect) determined after heating to 400°C in samples preliminarily deformed to 3.5–4% vary from 0.15 to 2.7%, depending on the composition of the steels and regimes of stabilizing and destabilizing aging.

Keywords

shape-memory effect (SME) aging stainless steels vanadium carbide VC martensitic transformation ε phase electron microscopy 

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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • V. V. Sagaradze
    • 1
  • S. V. Afanasiev
    • 1
  • E. G. Volkova
    • 1
  • V. A. Zavalishin
    • 1
  1. 1.Institute of Metal Physics, Ural BranchRussian Academy of SciencesEkaterinburgRussia

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