Pinning of nanocrystals growth at Fe-Ni-B amorphous alloy crystallization: Atom probe investigations
Artikel i vetenskaplig tidskrift, 2015
The crystallization processes in Fe
50
Ni
33
B
17
amorphous alloy have been investigated by transmission electron microscopy (TEM) and a three dimensional atom probe (3DAP). The γ-Fe,Ni FCC crystals, 25 nm in size, were found in the amorphous alloy annealed at temperatures ranging 360-400 °C for 1 h. TEM demonstrates that the nanocrystals growth stops as the temperature rises. The formation of an amorphous layer enriched in boron at the border of γ-Fe,Ni nanocrystals responsible for the pinning of nanocrystals size was observed by 3DAP. The composition of an amorphous barrier by 3DAP was found to be Fe
50
Ni
29
B
21
. It was proposed that this composition reveals higher crystallization temperature, which is the reason of pinning nanocrystals growth.
Amorphous materials
Fe-Ni-B
Crystallization
Three-dimensional atom probe (3DAP)
Författare
A. M. Glezer
National University of Science & Technology (MISIS)
Bardin Institute for Ferrous Metallurgy
M. V. Gorshenkov
National University of Science & Technology (MISIS)
D. G. Zhukov
National University of Science & Technology (MISIS)
O. A. Korchuganova
National Research Nuclear University
A. A. Aleev
National Research Nuclear University
Torben Boll
Chalmers, Teknisk fysik, Materialens mikrostruktur
N. A. Shurygina
Bardin Institute for Ferrous Metallurgy
I. V. Shchetinin
National University of Science & Technology (MISIS)
Materials Letters
0167-577X (ISSN) 18734979 (eISSN)
Vol. 160 339-342 19351Ämneskategorier
Den kondenserade materiens fysik
DOI
10.1016/j.matlet.2015.07.153