journal article·2014-07

Non-Conventional Techniques for the Study of Phase Transitions in NiTi-Based Alloys

Adelaide Nespoli, Elena Villa, Francesca Passaretti, Franca Albertini, Riccardo Cabassi, Massimo Pasquale, Carlo Paolo Sasso, Marco Coïsson

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Abstract

Differential scanning calorimetry and electrical resistance measurements are the two most common techniques for the study of the phase transition path and temperatures of shape memory alloys (SMA) in stress-free condition. Besides, it is well known that internal friction measurements are also useful for this purpose. There are indeed some further techniques which are seldom used for the basic characterization of SMA transition: dilatometric analysis, magnetic measurements, and Seebeck coefficient study. In this work, we discuss the attitude of these techniques for the study of NiTi-based phase transition. Measurements were conducted on several fully annealed Ni50-x Ti50Cu (x) samples ranging from 3 to 10 at.% in Cu content, fully annealed at 850 A degrees C for 1 h in vacuum and quenched in water at room temperature. Results show that all these techniques are sensitive to phase transition, and they provide significant information about the existence of intermediate phases.
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Research context

OpenAlex topics: Shape Memory Alloy Transformations · Magnetic and transport properties of perovskites and related materials · High Entropy Alloys Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (11)

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