Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

The heterogeneous nature of mechanically accelerated grain growth

Journal Article · · Journal of Materials Science
Abstract

While grain growth is traditionally viewed as a purely thermally driven process, nanocrystalline metals can undergo grain growth under mechanical loads, even at room temperature. We performed a detailed atomistic study of the heterogeneous nature of mechanically accelerated grain growth in a polycrystalline Pt nanowire. Using molecular dynamics simulations, we compared the grain-growth behavior of individual grains during tensile and shear cyclic loading, for three different equivalent strain levels, and at two temperatures. Pure thermal grain growth with no mechanical loading provided a baseline reference case. On average, grains that were already susceptible to thermal grain growth were stimulated to grow faster with mechanical loading, as expected. However, when analyzed on a grain-by-grain basis, the results were far more complex: grains that grew fastest under one stimuli were less accelerated under other stimuli. Even when the magnitude of loading changed, the relative growth of individual grains was distorted. We interpret this complexity from the perspective of superimposed growth mechanisms.

Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003525
OSTI ID:
1899751
Journal Information:
Journal of Materials Science, Journal Name: Journal of Materials Science Journal Issue: 47 Vol. 57; ISSN 0022-2461
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
United States
Language:
English

References (53)

Simulation of curvature-driven grain growth by using a modified monte carlo algorithm journal January 1995
Structural changes associated with strain-induced grain boundary migration in Si-Fe journal April 1957
The onset and evolution of fatigue-induced abnormal grain growth in nanocrystalline Ni–Fe journal October 2016
Anomalous Fatigue Behavior and Fatigue-Induced Grain Growth in Nanocrystalline Nickel Alloys journal May 2011
Tracking Microstructure of Crystalline Materials: A Post-Processing Algorithm for Atomistic Simulations journal January 2014
Cryogenic Stress-Driven Grain Growth Observed via Microcompression with in situ Electron Backscatter Diffraction journal February 2020
Stress-induced movement of crystal boundaries journal March 1953
Recent observations on the motion of small angle dislocation boundaries journal March 1954
On the theory of normal grain growth journal June 1974
Stress-enhanced grain growth in a nanocrystalline material by molecular-dynamics simulation journal April 2003
Computer simulation of the elastically driven migration of a flat grain boundary journal May 2004
Direct observation of deformation-induced grain growth during the nanoindentation of ultrafine-grained Al at room temperature journal October 2004
Stress-assisted discontinuous grain growth and its effect on the deformation behavior of nanocrystalline aluminum thin films journal May 2006
Coupling grain boundary motion to shear deformation journal November 2006
Survey of computed grain boundary properties in face-centered cubic metals—II: Grain boundary mobility journal August 2009
Fatigue-induced grain coarsening in nanocrystalline platinum films journal February 2011
Competing deformation mechanisms in nanocrystalline metals and alloys: Coupled motion versus grain boundary sliding journal October 2012
Coupled motion of asymmetrical tilt grain boundaries: Molecular dynamics and phase field crystal simulations journal November 2012
Structural instabilities during cyclic loading of ultrafine-grained copper studied with micro bending experiments journal February 2017
Stress-assisted grain growth in nanocrystalline metals: Grain boundary mediated mechanisms and stabilization through alloying journal June 2017
Mechanically enhanced grain boundary structural phase transformation in Cu journal March 2018
Initiation and stagnation of room temperature grain coarsening in cyclically strained gold films journal May 2019
High-cycle-fatigue induced continuous grain growth in ultrafine-grained titanium journal August 2019
Development of physically based atomistic microstructures: The effect on the mechanical response of polycrystals journal February 2017
Grain-resolved kinetics and rotation during grain growth of nanocrystalline Aluminium by molecular dynamics journal February 2017
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales journal February 2022
The effect of microstructural representation on simulations of microplastic ratcheting journal May 2010
A micromechanics-based model for shear-coupled grain boundary migration in bicrystals journal May 2013
Modes of grain growth and mechanism of dislocation reaction under applied biaxial strain: Atomistic and continuum modeling journal July 2020
Grain boundary migration during room temperature deformation of nanocrystalline Ni journal October 2006
Stress-driven grain growth in nanocrystalline Pt thin films journal January 2011
Grain growth and dislocation density evolution in a nanocrystalline Ni–Fe alloy induced by high-pressure torsion journal February 2011
Coupled grain boundary motion in a nanocrystalline grain boundary network journal July 2011
Deformation-induced thermally activated grain growth in nanocrystalline nickel journal July 2012
Cryogenic indentation-induced grain growth in nanotwinned copper journal May 2013
Atomistic modeling study of a strain-free stress driven grain boundary migration mechanism journal June 2017
Strain Induced Grain Boundary Migration in High Purity Aluminum journal February 1950
Rapid stress-driven grain coarsening in nanocrystalline Cu at ambient and cryogenic temperatures journal August 2005
High-pressure torsion-induced grain growth in electrodeposited nanocrystalline Ni journal January 2006
Orientation-dependent grain growth in a bulk nanocrystalline alloy during the uniaxial compressive deformation journal April 2006
Grain growth behavior at absolute zero during nanocrystalline metal indentation journal September 2006
Complete set of stochastic Verlet-type thermostats for correct Langevin simulations journal September 2019
Shear deformation kinematics of bicrystalline grain boundaries in atomistic simulations journal December 2009
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
A phase-field model of stress effect on grain boundary migration journal March 2011
Influences of triple junctions on stress-assisted grain boundary motion in nanocrystalline materials journal May 2014
Quantitative tracking of grain structure evolution in a nanocrystalline metal during cyclic loading journal January 2015
Molecular dynamics investigation of the grain boundary migration hysteresis of nanocrystalline Ni under cyclic shear loading journal December 2016
Fatigue-driven acceleration of abnormal grain growth in nanocrystalline wires journal January 2019
Highly optimized embedded-atom-method potentials for fourteen fcc metals journal April 2011
Elementary Mechanisms of Shear-Coupled Grain Boundary Migration journal June 2013
Experimental Observations of Stress-Driven Grain Boundary Migration journal December 2009
Cyclically induced grain growth within shear bands investigated in UFG Ni by cyclic high pressure torsion journal July 2017

Similar Records

Concepts on Low Temperature Mechanical Grain Growth
Technical Report · Fri Nov 01 00:00:00 EDT 2013 · OSTI ID:1325912

Fatigue-driven acceleration of abnormal grain growth in nanocrystalline wires
Journal Article · Sun Dec 09 19:00:00 EST 2018 · Modelling and Simulation in Materials Science and Engineering · OSTI ID:1501626

The radiation instability of thermally stable nanocrystalline platinum gold
Journal Article · Thu Jun 13 20:00:00 EDT 2024 · Journal of Materials Science · OSTI ID:2394711

Related Subjects