skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale

Journal Article · · Physical Review Letters
 [1];  [1];  [1]
  1. Univ. of California, Los Angeles, CA (United States). Mechanical and Aerospace Engineering Dept.

We demonstrate, through three-dimensional discrete dislocation dynamics simulations, that the complex dynamical response of nano- and microcrystals to external constraints can be tuned. Under load rate control, strain bursts are shown to exhibit scale-free avalanche statistics, similar to critical phenomena in many physical systems. For the other extreme of displacement rate control, strain burst response transitions to quasiperiodic oscillations, similar to stick-slip earthquakes. External load mode control is shown to enable a qualitative transition in the complex collective dynamics of dislocations from self-organized criticality to quasiperiodic oscillations.

Research Organization:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
FG02-03ER54708
OSTI ID:
1536432
Alternate ID(s):
OSTI ID: 1328249
Journal Information:
Physical Review Letters, Vol. 117, Issue 15; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

References (35)

The origin of strain avalanches in sub-micron plasticity of fcc metals journal May 2015
Dislocation arrangement in small crystal volumes determines power-law size dependence of yield strength journal June 2013
The role of the weakest-link mechanism in controlling the plasticity of micropillars journal January 2009
An experimental investigation of intermittent flow and strain burst scaling behavior in LiF crystals during microcompression testing journal September 2010
Dislocation transport and intermittency in the plasticity of crystalline solids journal January 2009
Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator journal October 2012
Scale-free behavior of displacement bursts: Lower limit and scaling exponent journal October 2012
Emergence of enhanced strengths and Bauschinger effect in conformally passivated copper nanopillars as revealed by dislocation dynamics journal April 2013
Slip statistics of dislocation avalanches under different loading modes journal April 2015
Unravelling the physics of size-dependent dislocation-mediated plasticity journal January 2015
Singularity-free dislocation dynamics with strain gradient elasticity journal August 2014
Nanoscale gold pillars strengthened through dislocation starvation journal June 2006
Effects of pre-straining and coating on plastic deformation of aluminum micropillars journal October 2012
A methodology to investigate size scale effects in crystalline plasticity using uniaxial compression testing journal July 2005
Collective behavior of earthquakes and faults: Continuum-discrete transitions, progressive evolutionary changes, and different dynamic regimes journal January 2008
Universal Quake Statistics: From Compressed Nanocrystals to Earthquakes journal November 2015
Self-Organized Branching Processes: Mean-Field Theory for Avalanches journal November 1995
Dislocation Avalanches, Strain Bursts, and the Problem of Plastic Forming at the Micrometer Scale journal October 2007
Evidence for universal intermittent crystal plasticity from acoustic emission and high-resolution extensometry experiments journal December 2007
Plasticity goes supercriticial journal June 2005
Scale-Free Intermittent Flow in Crystal Plasticity journal May 2006
Overview of experiments on microcrystal plasticity in FCC-derivative materials: selected challenges for modelling and simulation of plasticity journal February 2007
A simple analytic theory for the statistics of avalanches in sheared granular materials journal March 2011
Slip avalanches in crystal plasticity: scaling of the avalanche cut-off journal April 2007
Scale invariance in plastic flow of crystalline solids journal January 2006
Intermittent dislocation flow in viscoplastic deformation journal April 2001
Statistics of Dislocation Slip Avalanches in Nanosized Single Crystals Show Tuned Critical Behavior Predicted by a Simple Mean Field Model journal August 2012
Parametric dislocation dynamics: A thermodynamics-based approach to investigations of mesoscopic plastic deformation journal January 2000
Stochastic nature of plasticity of aluminum micro-pillars journal May 2008
Source-controlled yield and hardening of Cu(100) studied by in situ transmission electron microscopy journal February 2011
Theoretical and numerical investigations of single arm dislocation source controlled plastic flow in FCC micropillars journal April 2014
How Nature Works journal December 2020
How Nature Works journal December 1965
Intermittent dislocation flow in viscoplastic deformation text January 2001
Slip avalanches in crystal plasticity: scaling of the avalanche cutoff text January 2007

Cited By (8)

First-principles Modeling of Thermal Transport in Materials: Achievements, Opportunities, and Challenges journal December 2019
Size effects of micrometer-scaled metals—the search continues for materials containing real microstructures journal April 2017
Rotatable precipitates change the scale-free to scale dependent statistics in compressed Ti nano-pillars. text January 2019
Dislocations and Plastic Deformation in MgO Crystals: A Review journal May 2018
Rotatable precipitates change the scale-free to scale dependent statistics in compressed Ti nano-pillars journal March 2019
Dislocations and Plastic Deformation in MgO Crystals: A Review text January 2018
Avalanches and Plastic Flow in Crystal Plasticity: An Overview text January 2017
Discrete shear band plasticity through dislocation activities in body-centered cubic tungsten nanowires journal March 2018