Training-induced criticality in martensites

Francisco Jose Perez-Reche, Lev Truskinovsky, Giovanni Zanzotto

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37 Citations (Scopus)

Abstract

We propose an explanation for the self-organization towards criticality observed in martensites during the cyclic process known as "training." The scale-free behavior originates from the interplay between the reversible phase transformation and the concurrent activity of lattice defects. The basis of the model is a continuous dynamical system on a rugged energy landscape, which in the quasistatic limit reduces to a sandpile automaton. We reproduce all the principal observations in thermally driven martensites, including power-law statistics, hysteresis shakedown, asymmetric signal shapes, and correlated disorder.

Original languageEnglish
Article number075501
Number of pages4
JournalPhysical Review Letters
Volume99
Issue number7
DOIs
Publication statusPublished - 17 Aug 2007

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