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Title: Intermittent dynamics in externally driven ferroelastics and strain glasses

Abstract

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.

Authors:
 [1];  [2];  [3];  [4];  [2]
  1. Univ. of Barcelona (Spain). Dept. of Quantum Physics and Astrophysics
  2. Univ. of Barcelona (Spain). Dept. of Condensed Matter Physics
  3. Polytechnic Univ. of Catalonia, Barcelona (Spain). Dept. of Physics. Barcelona Research Center in Multiscale Science and Engineering
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Barcelona (Spain); Polytechnic Univ. of Catalonia, Barcelona (Spain)
Sponsoring Org.:
Ministry of Science (Spain); European Regional Development Fund (ERDF); Catalan Government; USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1494475
Alternate Identifier(s):
OSTI ID: 1474757; OSTI ID: 1483533
Report Number(s):
LA-UR-18-23827; LA-UR-18-23815
Journal ID: ISSN 2470-0045
Grant/Contract Number:  
89233218CNA000001; MAT2016-75823-R; FIS2017-82625-P; 2017SGR-42
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 98; Journal Issue: 3; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; elasticity; ferroelasticity; glass transition; microstructure; phase transitions; Material Science

Citation Formats

Porta, Marcel, Castán, Teresa, Lloveras, Pol, Saxena, Avadh, and Planes, Antoni. Intermittent dynamics in externally driven ferroelastics and strain glasses. United States: N. p., 2018. Web. doi:10.1103/PhysRevE.98.032143.
Porta, Marcel, Castán, Teresa, Lloveras, Pol, Saxena, Avadh, & Planes, Antoni. Intermittent dynamics in externally driven ferroelastics and strain glasses. United States. doi:10.1103/PhysRevE.98.032143.
Porta, Marcel, Castán, Teresa, Lloveras, Pol, Saxena, Avadh, and Planes, Antoni. Fri . "Intermittent dynamics in externally driven ferroelastics and strain glasses". United States. doi:10.1103/PhysRevE.98.032143. https://www.osti.gov/servlets/purl/1494475.
@article{osti_1494475,
title = {Intermittent dynamics in externally driven ferroelastics and strain glasses},
author = {Porta, Marcel and Castán, Teresa and Lloveras, Pol and Saxena, Avadh and Planes, Antoni},
abstractNote = {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.},
doi = {10.1103/PhysRevE.98.032143},
journal = {Physical Review E},
number = 3,
volume = 98,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
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