Study of Two-Way Shape Memory Behavior of Amorphous-Crystalline TiNiCu Melt-Spun Ribbons

Alexander Shelyakov; Nikolay Sitnikov; Sergey Saakyan; Alexey Menushenkov; Razhudin Rizakhanov; Alexander Korneev

doi:10.4028/www.scientific.net/MSF.738-739.352

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HomeMaterials Science ForumMaterials Science Forum Vols. 738-739Study of Two-Way Shape Memory Behavior of...

Study of Two-Way Shape Memory Behavior of Amorphous-Crystalline TiNiCu Melt-Spun Ribbons

Abstract:

Recently we reported on the development of a composite material exhibiting reversible shape memory effect. A Ti–25Ni–25Cu (at.%) alloy was obtained by the melt spinning technique as amorphous–crystalline ribbons with a thickness of approximately 40 μm. The thickness of the amorphous and crystalline layers (d_а and d_c, respectively) was varied by electrochemical polishing. It has been ascertained that with varying the relationship d_c/d_а the martensite transformation and shape-recovery temperatures do not actually change, while the minimum radius of the ribbon bending decreases from 8.0 mm to 2.4 mm with increasing the relationship d_c/d_а from 0.33 to 1.40. The maximum reversible strain comprises 0.4% at d_c/d_а = 0.82. On the basis of experimental data obtained the phenomenological description, providing an explanation for nature of the phenomena taking place in the rapidly quenched amorphous-crystalline ribbon composite, has been proposed.

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Periodical:

Materials Science Forum (Volumes 738-739)

Pages:

352-356

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.738-739.352

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Online since:

January 2013

Authors:

Alexander Shelyakov, Nikolay Sitnikov, Sergey Saakyan, Alexey Menushenkov, Razhudin Rizakhanov, Alexander Korneev

Keywords:

Amorphous-Crystalline Structure, Composite Material, Martensitic Transformation (MT), Melt-Spun Ribbon, Shape Memory Alloy (SMA), Two-Way Shape Memory Effect

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