This article is cited in 28 papers

Metals

Structural transformations in the Al$_{85}$Ni$_{6.1}$Co$_2$Gd$_6$Si$_{0.9}$ amorphous alloy during multiple rolling

G. Abrosimova^a, A. Aronin^a, O. Barkalov^a, D. Matveev^a, O. Rybchenko^a, V. Maslov^b, V. Tkach<sup>c

a</sup> Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region
^b G. V. Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine
^c Galkin Donetsk Institute for Physics and Engineering, Donetsk

Abstract: The effect of multiple rolling at room temperature on the structure and crystallization of the Al$_{85}$Ni$_{6.1}$Co$_2$Gd$_6$Si$_{0.9}$ amorphous alloy has been studied using transmission electron microscopy, differential scanning calorimetry, and X-ray diffraction. The total plastic strain is 33%. It has been shown that the deformation results in the formation of aluminum nanocrystals with the average size that does not exceed 10–15 nm. The nanocrystals are formed in regions of localization of plastic deformation. The deformation decreases the thermal effect of nanocrystallization ($\sim$15%) as compared to the heat release at the first stage of crystallization of the unstrained sample. The morphology, structure, and distribution of precipitates have been investigated. Possible mechanisms of the formation of nanocrystals during the deformation have been discussed.

Received: 19.05.2010
Accepted: 08.06.2010

 English version: Physics of the Solid State, 2011, 53:2, 229–233

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