Two-Directional TiNi Shape Memory Alloy Film

A change from a memorized convex to a concave curvature between 10 °C for the martensitic and 50 °C for the austenitic transition is the important feature of a novel two‐directional shape TiNi memory alloy film fabricated by sputtering. The key to two‐directional actuation is Ti3Ni4 precipitate form...

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Veröffentlicht in:	Advanced engineering materials 2003-10, Vol.5 (10), p.732-735
Hauptverfasser:	Takagi, H., Okano, K., Juodkazis, S., Matsuo, S., Misawa, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Laser Processing Martensitic transformations Materials science Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Photonic Crystals Physics Shape memory alloys Shape memory alloys, two directional two directional Ultrafast Spectroscopy
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Beschreibung
Zusammenfassung:	A change from a memorized convex to a concave curvature between 10 °C for the martensitic and 50 °C for the austenitic transition is the important feature of a novel two‐directional shape TiNi memory alloy film fabricated by sputtering. The key to two‐directional actuation is Ti3Ni4 precipitate formation attained by an Ni enrichment (55.6 %) in the alloy. The Figure shows the bending of a strip placed over a steaming cup of tea after 0.1 to 0.4 seconds.
ISSN:	1438-1656 1527-2648
DOI:	10.1002/adem.200300347