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Martensitic Characterization of the Ti<sub>45.3</sub>Ni<sub>54.7</sub> Melt Spun Alloy

Author(s): Geroge C. S. Anselmo | Walman Benicio de Castro | Carlos J. de Araújo

Journal: Materials Sciences and Applications
ISSN 2153-117X

Volume: 02;
Issue: 09;
Start page: 1256;
Date: 2011;
Original page

Keywords: Shape Memory Ni-Ti Alloy | Rapid Solidification | Martensitic Transformation

The ribbons of the Ti45.3Ni54.7 shape memory alloy were prepared through the melt spinning technique. The study was focused on investigating the effect of the rapid solidification and grain size at characteristic start martensitic (Ms), final martensitic (Mf), start austenite (As) and final austenite (Af) transformation temperatures. Changes on martensitic transformation temperatures in Ti45Ni55 melt spun ribbons were observed as grain size is reduced. Results of optical microscopy and differential scanning calorimetry (DSC) were used to associate grain size with transformation temperatures.
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