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Thermal stability of the R phase of a rapidly solidified Ti-47.3Ni (at%) alloyopen access
- Authors
- Moon, H.-J.; Chun, S.-J.; Nam, T.-H.; Liu, Y.; Yang, H.; Kim, Y.-W.
- Issue Date
- 2012
- Keywords
- Martensitic transformation; Rapid solidification; Shape memory alloys; X-ray diffraction
- Citation
- Transactions on Electrical and Electronic Materials, v.13, no.1, pp 19 - 22
- Pages
- 4
- Indexed
- SCOPUS
KCI
- Journal Title
- Transactions on Electrical and Electronic Materials
- Volume
- 13
- Number
- 1
- Start Page
- 19
- End Page
- 22
- ISSN
- 1229-7607
2092-7592
- Abstract
- Transformation behavior of rapidly solidified Ti-47.3Ni (at%) alloy ribbons and thermal stability of the R phase in the ribbons were investigated by means of differential scanning calorimetry (DSC), X-ray diffraction, and transmission electron microscopy. Rapidly solidified Ti-47.3Ni alloy ribbons showed the two-stage B2-R-B19' martensitic transformation behavior. The B2-R transformation in the ribbons was observed even after annealing at 1,223 K, which was attributed to the fact that a specific orientation relationship between Ti 2Ni and matrix in the ribbons is maintained after annealing at 1,223 K. The DSC peak temperature of the B2-R transformation (T R *) decreased with raising annealing temperature, which was attributed to the increased volume fraction of Ti 2Ni, thus causing an increased Ni content in the matrix. ? 2012 KIEEME. All rights reserved.
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