V. I. Danilov, D. V. Orlova, L. B. Zuev, I. O. Bolotina, “On the localization of plastic strain at the prefailure stage and the possibility of predicting the site and time of ductile rupture”, Zhurnal Tekhnicheskoi Fiziki, 2011, Volume 81, Issue 2,Pages <nobr>51

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Solids

On the localization of plastic strain at the prefailure stage and the possibility of predicting the site and time of ductile rupture

V. I. Danilov^a, D. V. Orlova^a, L. B. Zuev^a, I. O. Bolotina^b

^a Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Tomsk
^b Tomsk Polytechnic University

Abstract: The localization of macrodeformation during the transition from plastic flow to ductile rupture is studied for a wide class of metals. It is found that the mechanism behind this process is the same as that behind plastic deformation and as such can be described as a change in the type of localized deformation autowave in the following sequence: phase autowave $\to$ steady dissipative structure $\to$ collapse of autowave or its contraction at the site of ensuing failure. The kinetic characteristics of an autowave collapsing at the prefailure stage, which can be found experimentally, allow one to predict the spatio-temporal coordinates of rupture long before its signs appear.

Received: 30.03.2010
Accepted: 18.06.2010