- Tytuł:
- NiTi shape memory marformed alloy studied by electron beam precession TEM orientation mapping method
- Autorzy:
-
Świec, P.
Zubko, M.
Lekston, Z.
Stróż, D. - Powiązania:
- https://bibliotekanauki.pl/articles/1055112.pdf
- Data publikacji:
- 2017-05
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
62.20.fg
62.20.F-
61.43.Dq
61.66.Bi
68.37.Ef
62.25.-g
64.70.Nd - Opis:
- Severe plastic deformation by cold-rolling in martensitic state was applied to Ni_{50.4}Ti_{49.6} shape memory alloy. Received materials with 17, 20, 25, and 35% deformation were further annealed at 450°C for 15 min. After such treatment hardness of this alloy increased significantly reaching 365 HV0.5 for highest deformation degree. Calorimetric studies revealed two-stage and two-step character of martensitic transformation occurring in all specimens. Nanocrystalline structure with average grain size 53, 34, 28, and 24 nm was obtained. In material with 35% of deformation amorphous regions containing a nuclei of B2 parental phase with average size of 5 nm were observed. To determine the crystallographic orientation of observed nanograins and for better phase analysis, electron beam precession transmission electron microscopy orientation mapping was performed.
- Źródło:
-
Acta Physica Polonica A; 2017, 131, 5; 1307-1310
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł