DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects

Abstract

We use atomistic simulations to investigate grain boundary (GB) phase transitions in elemental body-centered cubic (bcc) metal tungsten. Motivated by recent modeling study of grain boundary phase transitions in [100] symmetric tilt boundaries in face-centered cubic (fcc) copper, we perform a systematic investigation of [100] and [110] symmetric tilt high-angle and low-angle boundaries in bcc tungsten. The structures of these boundaries have been investigated previously by atomistic simulations in several different bcc metals including tungsten using the the γ-surface method, which has limitations. In this work we use a recently developed computational tool based on the USPEX structure prediction code to perform an evolutionary grand canonical search of GB structure at 0 K. For high-angle [100] tilt boundaries the ground states generated by the evolutionary algorithm agree with the predictions of the γ-surface method. For the [110] tilt boundaries, the search predicts novel high-density low-energy grain boundary structures and multiple grain boundary phases within the entire misorientation range. Molecular dynamics simulation demonstrate that the new structures are more stable at high temperature. We observe first-order grain boundary phase transitions and investigate how the structural multiplicity affects the mechanisms of the point defect absorption. Specifically, we demonstrate a two-step nucleation process,more » when initially the point defects are absorbed through a formation of a metastable GB structure with higher density, followed by a transformation of this structure into a GB interstitial loop or a different GB phase.« less

Authors:
ORCiD logo [1];  [2];  [1];  [3];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Nevada, Las Vegas, NV (United States)
  3. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1524287
Alternate Identifier(s):
OSTI ID: 1694060
Report Number(s):
LLNL-JRNL-749083
Journal ID: ISSN 1359-6454; 934273
Grant/Contract Number:  
AC52-07NA27344; 17-LW-012; NA0001982
Resource Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 159; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Frolov, Timofey, Zhu, Qiang, Oppelstrup, Tomas, Marian, Jaime, and Rudd, Robert E. Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects. United States: N. p., 2018. Web. doi:10.1016/j.actamat.2018.07.051.
Frolov, Timofey, Zhu, Qiang, Oppelstrup, Tomas, Marian, Jaime, & Rudd, Robert E. Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects. United States. https://doi.org/10.1016/j.actamat.2018.07.051
Frolov, Timofey, Zhu, Qiang, Oppelstrup, Tomas, Marian, Jaime, and Rudd, Robert E. Tue . "Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects". United States. https://doi.org/10.1016/j.actamat.2018.07.051. https://www.osti.gov/servlets/purl/1524287.
@article{osti_1524287,
title = {Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects},
author = {Frolov, Timofey and Zhu, Qiang and Oppelstrup, Tomas and Marian, Jaime and Rudd, Robert E.},
abstractNote = {We use atomistic simulations to investigate grain boundary (GB) phase transitions in elemental body-centered cubic (bcc) metal tungsten. Motivated by recent modeling study of grain boundary phase transitions in [100] symmetric tilt boundaries in face-centered cubic (fcc) copper, we perform a systematic investigation of [100] and [110] symmetric tilt high-angle and low-angle boundaries in bcc tungsten. The structures of these boundaries have been investigated previously by atomistic simulations in several different bcc metals including tungsten using the the γ-surface method, which has limitations. In this work we use a recently developed computational tool based on the USPEX structure prediction code to perform an evolutionary grand canonical search of GB structure at 0 K. For high-angle [100] tilt boundaries the ground states generated by the evolutionary algorithm agree with the predictions of the γ-surface method. For the [110] tilt boundaries, the search predicts novel high-density low-energy grain boundary structures and multiple grain boundary phases within the entire misorientation range. Molecular dynamics simulation demonstrate that the new structures are more stable at high temperature. We observe first-order grain boundary phase transitions and investigate how the structural multiplicity affects the mechanisms of the point defect absorption. Specifically, we demonstrate a two-step nucleation process, when initially the point defects are absorbed through a formation of a metastable GB structure with higher density, followed by a transformation of this structure into a GB interstitial loop or a different GB phase.},
doi = {10.1016/j.actamat.2018.07.051},
journal = {Acta Materialia},
number = C,
volume = 159,
place = {United States},
year = {Tue Aug 14 00:00:00 EDT 2018},
month = {Tue Aug 14 00:00:00 EDT 2018}
}

Journal Article:

Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Microstructure and mechanical properties of super-strong nanocrystalline tungsten processed by high-pressure torsion
journal, September 2006


Design of Stable Nanocrystalline Alloys
journal, August 2012


Direct Observation of Sink-Dependent Defect Evolution in Nanocrystalline Iron under Irradiation
journal, May 2017


In-situ TEM/heavy ion irradiation on ultrafine-and nanocrystalline-grained tungsten: Effect of 3 MeV Si, Cu and W ions
journal, January 2015


Efficient Annealing of Radiation Damage Near Grain Boundaries via Interstitial Emission
journal, March 2010


The relationship between grain boundary structure, defect mobility and grain boundary sink efficiency
journal, March 2015

  • Uberuaga, Blas Pedro; Vernon, Louis J.; Martinez, Enrique
  • Scientific Reports, Vol. 5, Issue 1
  • DOI: 10.1038/srep09095

Designing Radiation Resistance in Materials for Fusion Energy
journal, July 2014


Power plant conceptual studies in Europe
journal, October 2007


Effect of rhenium addition on fracture toughness of tungsten at elevated temperatures
journal, February 1995

  • Mutoh, Y.; Ichikawa, K.; Nagata, K.
  • Journal of Materials Science, Vol. 30, Issue 3
  • DOI: 10.1007/BF00356341

Defect-interface interactions
journal, October 2015


Radiation damage tolerant nanomaterials
journal, November 2013


Preferential void formation at crystallographically ordered grain boundaries in nanotwinned copper thin films
journal, September 2015


Grain boundary complexions
journal, January 2014


Complexion: A new concept for kinetic engineering in materials science
journal, October 2007


Origin of Solid-State Activated Sintering in Bi2O3-Doped ZnO
journal, April 1999


The Role of a Bilayer Interfacial Phase on Liquid Metal Embrittlement
journal, September 2011


Nanometer-Thick Equilibrium Films: The Interface Between Thermodynamics and Atomistics
journal, April 2011


The Phase Behavior of Interfaces
journal, April 2011


Formation of ordered and disordered interfacial films in immiscible metal alloys
journal, March 2017


Materials selection rules for amorphous complexion formation in binary metallic alloys
journal, November 2017


Diffuse interface model for structural transitions of grain boundaries
journal, January 2006


Grain Boundary Transitions in Binary Alloys
journal, August 2006


Grain boundary segregation in immiscible nanocrystalline alloys
journal, March 2017


Grain-boundary layering transitions in a model bicrystal
journal, December 2013


Grain-boundary layering transitions and phonon engineering
journal, September 2016


Layering transitions at grain boundaries
journal, October 2016


First-principles study of bismuth films at transition-metal grain boundaries
journal, October 2014


Grain boundary energies in body-centered cubic metals
journal, April 2015


Computing the mobility of grain boundaries
journal, January 2006

  • Janssens, Koenraad G. F.; Olmsted, David; Holm, Elizabeth A.
  • Nature Materials, Vol. 5, Issue 2
  • DOI: 10.1038/nmat1559

Dislocation-Pairing Transitions in Hot Grain Boundaries
journal, January 2011


An identification scheme of grain boundaries and construction of a grain boundary energy database
journal, June 2011


Atomic periodicity of 〈001〉 symmetric tilt boundary in molybdenum
journal, August 1997


Structure and energy of general grain boundaries in bcc metals
journal, January 1991


Atomic-level physics of grain boundaries in bcc molybdenum
journal, October 2001


Symmetric tilt boundaries in body-centered cubic tantalum
journal, April 2016


On the structure of twist grain boundaries in ionic oxides
journal, June 1983


Secondary grain boundary dislocations in [001] twist boundaries in MgO I. Intrinsic structures
journal, July 1982


A dislocation model for the structure of [001] twist boundaries in ionic oxides
journal, January 1986


A General Structure for Coincidence Twist Grain Boundaries in Rock-Salt-Structured Oxides
journal, September 1984


Simulated quenching to the zero‐temperature limit of the grand‐canonical ensemble
journal, August 1992

  • Phillpot, S. R.; Rickman, J. M.
  • The Journal of Chemical Physics, Vol. 97, Issue 4
  • DOI: 10.1063/1.463053

Simulation of solids at nonzero temperatures in the grand-canonical ensemble
journal, March 1994


Are the Structures of Twist Grain Boundaries in Silicon Ordered at 0 K?
journal, February 2006


Molecular dynamics simulations of temperature-induced structural transitions at twist boundaries in silicon
journal, December 2007


Finding the low-energy structures of Si[001] symmetric tilted grain boundaries with a genetic algorithm
journal, November 2009


A genetic algorithm for predicting the structures of interfaces in multicomponent systems
journal, February 2010

  • Chua, Alvin L. -S.; Benedek, Nicole A.; Chen, Lin
  • Nature Materials, Vol. 9, Issue 5
  • DOI: 10.1038/nmat2712

Structural phase transformations in metallic grain boundaries
journal, May 2013

  • Frolov, Timofey; Olmsted, David L.; Asta, Mark
  • Nature Communications, Vol. 4, Issue 1
  • DOI: 10.1038/ncomms2919

Effect of Interface Phase Transformations on Diffusion and Segregation in High-Angle Grain Boundaries
journal, June 2013


Segregation-induced phase transformations in grain boundaries
journal, July 2015


Phase transformations at interfaces: Observations from atomistic modeling
journal, October 2016


Predicting phase behavior of grain boundaries with evolutionary search and machine learning
journal, February 2018


Non-coherent Cu grain boundaries driven by continuous vacancy loading
journal, March 2015


Impact of segregated interstitials on structures and energies of tilt grain boundaries in Mo
journal, February 2016


The grain-boundary structural unit model redux
journal, July 2017


Grain boundary phases in bcc metals
journal, January 2018

  • Frolov, T.; Setyawan, W.; Kurtz, R. J.
  • Nanoscale, Vol. 10, Issue 17
  • DOI: 10.1039/C8NR00271A

Interatomic potentials for modelling radiation defects and dislocations in tungsten
journal, September 2013


Atomic scale structure of sputtered metal multilayers
journal, November 2001


Ab initio study of H, He, Li and Be impurity effect in tungsten Σ3{1 1 2} and Σ27{5 5 2} grain boundaries
journal, March 2014


Ab initio calculations of grain boundaries in bcc metals
journal, March 2016

  • Scheiber, Daniel; Pippan, Reinhard; Puschnig, Peter
  • Modelling and Simulation in Materials Science and Engineering, Vol. 24, Issue 3
  • DOI: 10.1088/0965-0393/24/3/035013

Effects of transition metals on the grain boundary cohesion in tungsten
journal, April 2012


Atomic structure of the Σ5 (310)/[001] symmetric tilt grain boundary in molybdenum
journal, November 1999


Semimetallic Two-Dimensional Boron Allotrope with Massless Dirac Fermions
journal, February 2014


Evolutionary method for predicting surface reconstructions with variable stoichiometry
journal, May 2013


New developments in evolutionary structure prediction algorithm USPEX
journal, April 2013

  • Lyakhov, Andriy O.; Oganov, Artem R.; Stokes, Harold T.
  • Computer Physics Communications, Vol. 184, Issue 4
  • DOI: 10.1016/j.cpc.2012.12.009

Generalized evolutionary metadynamics for sampling the energy landscapes and its applications
journal, July 2015


Stability of the chevron domain at triple-line reconstructions
journal, May 2004


Chevron Defect at the Intersection of Grain Boundaries with Free Surfaces in Au
journal, August 2002


Steps, dislocations and disconnections as interface defects relating to structure and phase transformations
journal, December 1996


Special interfaces: military transformations
journal, August 2003


Interface defects, reference spaces and the Frank–Bilby equation
journal, June 2013


Thermochemical equilibrium of multiphase solids under stress
journal, October 1978


On the thermodynamics of crystalline solids
journal, June 1985

  • Mullins, W. W.; Sekerka, R. F.
  • The Journal of Chemical Physics, Vol. 82, Issue 11
  • DOI: 10.1063/1.448644

Defect character at grain boundary facet junctions: Analysis of an asymmetric Σ = 5 grain boundary in Fe
journal, February 2017


A diffuse interface model of grain boundary faceting
journal, June 2016

  • Abdeljawad, F.; Medlin, D. L.; Zimmerman, J. A.
  • Journal of Applied Physics, Vol. 119, Issue 23
  • DOI: 10.1063/1.4954066

First-Order Interfacial Transformations with a Critical Point: Breaking the Symmetry at a Symmetric Tilt Grain Boundary
journal, February 2018


Grain boundary phase transformations in PtAu and relevance to thermal stabilization of bulk nanocrystalline metals
journal, October 2017


Atomistic simulation of shear-coupled motion of [1 1 0] symmetric tilt grain boundary in α-iron
journal, June 2018


Mechanically enhanced grain boundary structural phase transformation in Cu
journal, March 2018


Nucleation of Crystals from Solution: Classical and Two-Step Models
journal, May 2009

  • Erdemir, Deniz; Lee, Alfred Y.; Myerson, Allan S.
  • Accounts of Chemical Research, Vol. 42, Issue 5
  • DOI: 10.1021/ar800217x

Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool
journal, December 2009


Works referencing / citing this record:

Understanding and predicting damage and failure at grain boundaries in BCC Ta
journal, October 2019

  • Chen, J.; Hahn, E. N.; Dongare, A. M.
  • Journal of Applied Physics, Vol. 126, Issue 16
  • DOI: 10.1063/1.5111837

Free energy of grain boundary phases: Atomistic calculations for Σ 5 ( 310 ) [ 001 ] grain boundary in Cu
journal, September 2018