Shape memory properties and transformation temperature of Ti50-XVXPt50 alloy

Improvement of functional properties of binary TiPt shape memory alloy by adding a third element to partially substitute for Ti, has to date resulted in a decreased martensitic transformation temperature. In this study, the effect of substituting titanium (Ti) with varying amounts of vanadium (V) on...

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Bibliographic Details
Published in:Intermetallics 2021-06, Vol.133, p.107154, Article 107154
Main Authors: Daswa, P., Chikosha, S., Siyasiya, C.W.
Format: Article
Language:English
Subjects:
Binary alloys
Crystal structure
Functional properties
Lithium
Martensitic transformation
Martensitic transformations
Materials substitution
Platinum base alloys
Shape memory alloys
Ternary alloying
Titanium
Transformation temperature
Vanadium
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Summary:Improvement of functional properties of binary TiPt shape memory alloy by adding a third element to partially substitute for Ti, has to date resulted in a decreased martensitic transformation temperature. In this study, the effect of substituting titanium (Ti) with varying amounts of vanadium (V) on microstructure, crystal structure and phase transformation was investigated using scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the addition of V to TiPt improved the functional properties and increased the martensitic transformation temperature. •Ternary alloying of Ti-Pt with vanadium substituting for titanium increased the martensitic transformation temperature.•The addition of vanadium improved the functional properties of Ti-Pt high temperature SMA.•The ternary (Ti-V)-Pt alloys were found to be thermally stable with respect to the transformation behavior.•Substitution of vanadium retained the low temperature orthorhombic B19 crystal structure.
ISSN:0966-9795
1879-0216
DOI:10.1016/j.intermet.2021.107154