In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness

Mulone A, Ennen I, Hütten A, Klement U (2020)
Journal of Materials Science 56(5): 4006-4012.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Mulone, Antonio; Ennen, IngaUniBi; Hütten, AndreasUniBi; Klement, Uta
Abstract / Bemerkung
This paper describes the crystallization which occurs upon annealing of an amorphous Fe-24at.%W coatings, electrodeposited from a glycolate-citrate plating bath. A combination of Differential Scanning Calorimetry and in-situ Transmission Electron Microscopy annealing is used to study the onset of crystallization of the amorphous coating. The in-situ TEM analyses reveal the formation of first crystallites after annealing at 400 degrees C for 30 min. Upon a temperature increase to 500-600 degrees C, the crystallites develop into Fe-rich nanocrystals with similar to 40 nm grain size. The nanocrystals are dispersed in the remaining amorphous Fe-W matrix, which results in the formation of a mixed nanocrystalline-amorphous structure. The observed crystallization can be held responsible for the increase in the hardness obtained upon annealing of Fe-24at.%W coatings. In fact, the hardness of the as-deposited material increases from 11 to 13 GPa after annealing at 400 degrees C, and it reaches the maximum value of 16.5 GPa after annealing at 600 degrees C.
Erscheinungsjahr
2020
Zeitschriftentitel
Journal of Materials Science
Band
56
Ausgabe
5
Seite(n)
4006-4012
ISSN
0022-2461
eISSN
1573-4803
Page URI
https://pub.uni-bielefeld.de/record/2949206

Zitieren

Mulone A, Ennen I, Hütten A, Klement U. In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness. Journal of Materials Science . 2020;56(5):4006-4012.
Mulone, A., Ennen, I., Hütten, A., & Klement, U. (2020). In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness. Journal of Materials Science , 56(5), 4006-4012. doi:10.1007/s10853-020-05485-7
Mulone, A., Ennen, I., Hütten, A., and Klement, U. (2020). In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness. Journal of Materials Science 56, 4006-4012.
Mulone, A., et al., 2020. In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness. Journal of Materials Science , 56(5), p 4006-4012.
A. Mulone, et al., “In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness”, Journal of Materials Science , vol. 56, 2020, pp. 4006-4012.
Mulone, A., Ennen, I., Hütten, A., Klement, U.: In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness. Journal of Materials Science . 56, 4006-4012 (2020).
Mulone, Antonio, Ennen, Inga, Hütten, Andreas, and Klement, Uta. “In-situ TEM annealing of amorphous Fe-24at.%W coatings and the effect of crystallization on hardness”. Journal of Materials Science 56.5 (2020): 4006-4012.

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