Martensitic Characterization of the Ti_45.3Ni_54.7 Melt Spun Alloy

Geroge C. S. Anselmo, Walman Benicio de Castro, Carlos J. de Araújo

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DOI: 10.4236/msa.2011.29169                

Abstract

The ribbons of the Ti_45.3Ni_54.7 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 (M_s), final martensitic (M_f), start austenite (A_s) and final austenite (A_f) 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.

Keywords

Shape Memory Ni-Ti Alloy, Rapid Solidification, Martensitic Transformation

Conflicts of Interest

The authors declare no conflicts of interest.

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