This article is cited in 2 papers

Low dimensional systems

Self-organization of the structure in the Cu$_{60}$Fe$_{40}$ composite during deformation-thermal treatment

Z. A. Samoilenko^a, N. N. Belousov^a, N. N. Ivakhnenko^ab, E. I. Pushenko^a, V. N. Varyukhin<sup>a

a</sup> Galkin Donetsk Institute for Physics and Engineering, Donetsk
^b Donetsk National University of Economics and Trade named after M. I. Tugan-Baranovsky, Donetsk

Abstract: The deformation-thermal stability of a clusterized amorphous-crystalline structure prepared from a Cu$_{60}$Fe$_{40}$ powder mixture at a logarithmic strain $e$ = 4.6 and subjected to isochronous (40 min) annealings at $T_a$ = 200–800$^\circ$C has been investigated. Periodic changes ($\Delta T$ = 300$^\circ$C) in the order and disorder with a maximum ordering at $T_a$ = 300 and 600$^\circ$C and a maximum disordering at $T_a$ = 400 and 700$^\circ$C have been observed. The periodicity of the dominant crystallographic order with a period $\Delta T$ = 400$^\circ$C in the annealing temperature has been revealed for face-centered cubic copper phase planes separated by a singular point at $T$ = 500$^\circ$C characterized by the dominant body-centered cubic iron phase ordering. It has been shown that the sawtooth shape of the size distribution of strain clusters formed within the crystal structure of deformed samples slowly changes with increasing annealing temperature from exponential ($T_a$ = 200–700$^\circ$C) to linear ($T_a$ = 800$^\circ$C). This indicates a high density of internal local distortions in structural units.

Received: 01.07.2013
Accepted: 12.11.2013

 English version: Physics of the Solid State, 2014, 56:6, 1234–1238

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