Scaling behavior of the Portevin-Le Chatelier effect in an Al-2.5%Mg alloy.
The scaling behavior of the Portevin-Le Chatelier (PLC) effect was studied by deforming an Al-2.5%Mg alloy for a wide range of strain rates. To reveal the exact scaling nature, the time series data of true stress versus time, obtained during deformation, were analyzed by two complementary methods: the finite variance scaling method and the diffusion entropy analysis. From these analyses we could establish that, in the entire span of strain rates, the PLC effect showed the Levy-walk property.
Barat
P
P
Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata-700 064, India. pbarat@veccal.ernet.in
Sarkar
A
A
Mukherjee
P
P
Bandyopadhyay
S K
SK