Shape memory effect and superelasticity in single crystals of iron-based alloys Z. V. Pobedennaya, K. A. Reunova, I. V. Kireeva, Y. I. Chumlyakov
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ArticleSubject(s): память формы | сверхэластичность | сплавыGenre/Form: статьи в журналах Online resources: Click here to access online
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IOP Conference Series: Materials Science and Engineering Vol. 93. P. 012044 (1-6)Abstract: It was demonstrated that in single crystals of disordered iron-based (Fe-28%Ni-17%Co-11.5%Al-2.5%Х (at. %) (X = Ti, Ta, Ti + Ta) alloys, which undergoing γ-α' thermoelastic martensitic transformation (γ – fcc – face-centered cubic lattice, α' – bct – body-centered tetragonal lattice), the precipitation of ordered γ'-phase particles at aged at 973 K for 0.5 h and 7 h results in the shape memory effect and superelasticity. It was experimentally discovered, that the both mechanical and functional properties – the shape memory effect and superelasticity – can be controlled by changing the chemical composition, the size and the volume fraction of dispersed particles of γ'-phase.
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It was demonstrated that in single crystals of disordered iron-based (Fe-28%Ni-17%Co-11.5%Al-2.5%Х (at. %) (X = Ti, Ta, Ti + Ta) alloys, which undergoing γ-α' thermoelastic martensitic transformation (γ – fcc – face-centered cubic lattice, α' – bct – body-centered tetragonal lattice), the precipitation of ordered γ'-phase particles at aged at 973 K for 0.5 h and 7 h results in the shape memory effect and superelasticity. It was experimentally discovered, that the both mechanical and functional properties – the shape memory effect and superelasticity – can be controlled by changing the chemical composition, the size and the volume fraction of dispersed particles of γ'-phase.
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