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Differences between the R-phase and the commensurate phase in iron-doped Ti-Ni shape memory alloys.
- Source :
-
Philosophical Magazine . 6/1/2008, Vol. 88 Issue 16, p2449-2460. 12p. 1 Black and White Photograph, 10 Graphs. - Publication Year :
- 2008
-
Abstract
- A Ti-44Ni-6Fe (at. %) alloy was recently reported to exhibit a second order-like incommensurate-commensurate transformation. Whether or not the commensurate (C) phase and the R-phase in Ti-Ni alloys are the same phase has now been investigated. Transformation behaviour was examined in a series of Ti-(50 - x)Ni-xFe (at. %) alloys with x = 2.0, 4.0, 5.0, 5.5, 5.7, 6.0. Transformation temperature, entropy change and the transformation strain decrease continuously as x increases up to x = 5.7, where the product phase is apparently the R-phase. However, there is an obvious discontinuity in these values between x = 5.7 and x = 6.0. In addition, electron diffraction experiments have revealed that the intensity of satellite reflections of the C-phase is obviously weaker than that of the R-phase. These results strongly suggest that the C-phase is different from the R-phase. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14786435
- Volume :
- 88
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Philosophical Magazine
- Publication Type :
- Academic Journal
- Accession number :
- 34507094
- Full Text :
- https://doi.org/10.1080/14786430802353409