This article is cited in 7 papers

Metals

Morphological transition from the Euclidean to the fractal shape of the Lüders band in the aluminum-magnesium alloy AMg6

A. A. Shibkov, A. E. Zolotov, M. A. Zheltov, A. A. Denisov

Tambov State University named after G.R. Derzhavin

Abstract: The spatio-temporal structure of the Lüders band in artificially aged and recrystallized AMg6 alloys deformed under uniaxial tension at a constant stress rate $\dot{\sigma}_0=\operatorname{const}$ has been investigated using high-speed video recording. A kinetic morphological transition has been revealed between the Euclidean and fractal shapes of the Lüders band due to a transformation of the initial microstructure of the alloy from the precipitation structure formed as a result of the artificial aging to the collective recrystallization structure. The mechanisms of formation of the dendrite-like fractal structure of the Lüders front have been discussed.

Received: 22.09.2010

 English version: Physics of the Solid State, 2011, 53:5, 887–895

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