| Numéro |
J. Phys. IV France
Volume 112, October 2003
|
|
|---|---|---|
| Page(s) | 1035 - 1038 | |
| DOI | https://doi.org/10.1051/jp4:20031058 | |
J. Phys. IV France 112 (2003) 1035
DOI: 10.1051/jp4:20031058
Martensitic transformation in Ti 50Pd 50.0-XFe X alloy
S. li1, M. Nishida1, Y. Murakami1 and D. Shindo21 Kumamoto University, Graduate School of Science and Technology, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
2 Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
Abstract
In order to clarify the transformation sequence in Ti
50.0Pd
Fe
alloy in detail, in-situ heating TEM observations and electron diffraction experiments were carried out in JEM-2010 microscope equipped with omega
type energy-filter. Mf temperature of Ti
50.0Pd
43.0Fe
7.0 alloy is about 520 K and martensite of 2H and 9R structures are observed at room temperature. The 9R martensite directly
reverts to the B2 parent phase via no intermediate state. Only incommensurate (IC) phase is confirmed at room temperature
in Ti
50.0Pd
40.0Fe
10.0 and Ti
50.0Pd
36.0Fe
l4.0 alloys, although Mf temperatures ofthese alloys are above room temperature. The IC phase transforms to the B2 parent phase
without any shift of intensity maximum position of IC reflections with heating. Therefore, the low temperature phase in the
alloys with more than 8.0 at % of Fe is the IC phase. Based on these results, systematical transformation phase diagram is
proposed.
© EDP Sciences 2003