An Experimental Study on Shape Memory Characteristics of Casted Ti-Ni Shape Memory Alloy

An Experimental Study on Shape Memory Characteristics of Casted Ti-Ni Shape Memory Alloy

The shape memory properties of a cast Ti-Ni shape memory alloy (SMA) were studied. Base materials were prepared as a melting method ingot and a self-propagating high-temperature synthesis (SHS) ingot. The composition of these ingots was Ti-50.5 at%Ni. Each ingot was cast into a rod shape by centrifu...

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Veröffentlicht in:Journal of the Japan Institute of Metals and Materials 2005, Vol.69(8), pp.604-607
Hauptverfasser: Kitamura, Kazuhiro, Kuchida, Toshio, Inaba, Tadashi, Tokuda, Masataka, Yoshimi, Yukiharu
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
casting alloy
shape memory alloy
titanium-nickel
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Zusammenfassung:The shape memory properties of a cast Ti-Ni shape memory alloy (SMA) were studied. Base materials were prepared as a melting method ingot and a self-propagating high-temperature synthesis (SHS) ingot. The composition of these ingots was Ti-50.5 at%Ni. Each ingot was cast into a rod shape by centrifugal casting. The heat-treatment conditions were 773 K for -1.8 ks and 873 K for -3.6 ks. Shape memory characteristics were measured by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and a tensile test. All cast specimens have good shape memory characteristics. According to DSC measurements, the specimens made by melting show gravity segregation.
ISSN:0021-4876
1880-6880
DOI:10.2320/jinstmet.69.604