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Title: Intermittent dynamics in externally driven ferroelastics and strain glasses

Journal Article · · Physical Review E
 [1];  [1];  [2];  [3];  [1]
  1. Univ. of Barcelona, Barcelona (Spain)
  2. Polytechnic Univ. of Catalonia, Barcelona (Spain)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

The interplay of elastic anisotropy and disorder dictates many of the properties of ferroic materials, specifically martensites. Here we use a phase-field model for ferroelastic athermal materials to study their response to an increasing external stress that couples to the strain order parameter. We show that these systems evolve through avalanches and study the avalanche-size distribution for ferroelastic systems (large anisotropy and/or small disorder) and for the strain glass (small anisotropy and/or large disorder) using various statistical analysis techniques, including the maximum likelihood method. The model predicts that in the former case the distribution is subcritical or power law (in agreement with experimental observations), whereas in the latter case it becomes supercritical. Finally, our results are consistent with experiments on martensitic materials, and we predict specific avalanche behavior that can be tested and used as an alternative means to characterize strain glasses.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Barcelona (Spain); Polytechnic Univ. of Catalonia, Barcelona (Spain)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; Ministry of Science (Spain); European Regional Development Fund (ERDF); Catalan Government
Grant/Contract Number:
89233218CNA000001; MAT2016-75823-R; FIS2017-82625-P; 2017SGR-42
OSTI ID:
1494475
Alternate ID(s):
OSTI ID: 1474757; OSTI ID: 1483533
Report Number(s):
LA-UR-18-23815; LA-UR-18-23827; PLEEE8
Journal Information:
Physical Review E, Vol. 98, Issue 3; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (1)

Influence of the number of orientational domains on avalanche criticality in ferroelastic transitions journal December 2019

Figures / Tables (12)