One-way and two-way shape memory effect in ferromagnetic NiFeGaCo single crystals E. E. Timofeeva, E. Y. Panchenko, Y. I. Chumlyakov [et.al.]
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ArticleSubject(s): память формы | ферромагнитные сплавы | мартенситные превращенияGenre/Form: статьи в журналах Online resources: Click here to access online
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Materials science and engineering A Vol. 640. P. 465-470Abstract: The effects of stress-free and stress-assisted aging at 673 K for 4 h on the one-way and two-way shape memory effect (TWSME) in ferromagnetic Ni49Fe18Ga27Co6 (at%) single crystals were investigated. Thermal cycling in the interval of stress-induced martensitic transformation was used to induce a two-way shape memory effect. A large reversible TWSME strain of up to 4.5% was observed after stress-assisted aging, which is attributed to the selection of certain precipitate variants and the corresponding favorably oriented internal stress fields formed.
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The effects of stress-free and stress-assisted aging at 673 K for 4 h on the one-way and two-way shape memory effect (TWSME) in ferromagnetic Ni49Fe18Ga27Co6 (at%) single crystals were investigated. Thermal cycling in the interval of stress-induced martensitic transformation was used to induce a two-way shape memory effect. A large reversible TWSME strain of up to 4.5% was observed after stress-assisted aging, which is attributed to the selection of certain precipitate variants and the corresponding favorably oriented internal stress fields formed.
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