Grain size effects on dislocation and twinning mediated plasticity in magnesium

Fan, Haidong; Aubry, Sylvie; Arsenlis, Athanasios; El-Awady, Jaafar A.

doi:10.1016/j.scriptamat.2015.09.008

Title: Grain size effects on dislocation and twinning mediated plasticity in magnesium

Abstract

Grain size effects on the competition between dislocation slip and {101¯2} -twinning in magnesium are investigated using discrete dislocation dynamics simulations. These simulations account for dislocation–twin boundary interactions and twin boundary migration through the glide of twinning dislocations. It is shown that twinning deformation exhibits a strong grain size effect; while dislocation mediated slip in untwinned polycrystals displays a weak one. In conclusion, this leads to a critical grain size at 2.7 μm, above which twinning dominates, and below which dislocation slip dominates.

Authors:

Fan, Haidong ^[1]; Aubry, Sylvie ^[2]; Arsenlis, Athanasios ^[2];

^[3]

Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Mechanical Engineering; Sichuan Univ., Sichuan (China)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Mechanical Engineering

Publication Date:: Sun Sep 20 00:00:00 EDT 2015

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1367992

Report Number(s):: LLNL-JRNL-702743
Journal ID: ISSN 1359-6462

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Scripta Materialia

Additional Journal Information:: Journal Volume: 112; Journal Issue: C; Journal ID: ISSN 1359-6462

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Discrete dislocation dynamics; Size effects; Dislocation–twin boundary interactions; Magnesium; Twinning plasticity

Citation Formats


                    Fan, Haidong, Aubry, Sylvie, Arsenlis, Athanasios, and El-Awady, Jaafar A. Grain size effects on dislocation and twinning mediated plasticity in magnesium.  United States: N. p., 2015. 
Web.  doi:10.1016/j.scriptamat.2015.09.008.

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                    Fan, Haidong, Aubry, Sylvie, Arsenlis, Athanasios, & El-Awady, Jaafar A. Grain size effects on dislocation and twinning mediated plasticity in magnesium.  United States.  https://doi.org/10.1016/j.scriptamat.2015.09.008

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                    Fan, Haidong, Aubry, Sylvie, Arsenlis, Athanasios, and El-Awady, Jaafar A. Sun .  
"Grain size effects on dislocation and twinning mediated plasticity in magnesium".  United States.  https://doi.org/10.1016/j.scriptamat.2015.09.008.  https://www.osti.gov/servlets/purl/1367992.

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@article{osti_1367992,

  title        = {Grain size effects on dislocation and twinning mediated plasticity in magnesium},

  author       = {Fan, Haidong and Aubry, Sylvie and Arsenlis, Athanasios and El-Awady, Jaafar A.},

  abstractNote = {Grain size effects on the competition between dislocation slip and {101¯2} -twinning in magnesium are investigated using discrete dislocation dynamics simulations. These simulations account for dislocation–twin boundary interactions and twin boundary migration through the glide of twinning dislocations. It is shown that twinning deformation exhibits a strong grain size effect; while dislocation mediated slip in untwinned polycrystals displays a weak one. In conclusion, this leads to a critical grain size at 2.7 μm, above which twinning dominates, and below which dislocation slip dominates.},

  doi          = {10.1016/j.scriptamat.2015.09.008},

  journal      = {Scripta Materialia},

  number       = C,

  volume       = 112,

  place        = {United States},

  year         = {Sun Sep 20 00:00:00 EDT 2015},

  month        = {Sun Sep 20 00:00:00 EDT 2015}

}

Copy to clipboard

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Title: Grain size effects on dislocation and twinning mediated plasticity in magnesium

Abstract

Citation Formats

Discerning size effect strengthening in ultrafine-grained Mg thin films journal, March 2014

Effects of preferred orientation on the grain size dependence of yield strength in metals journal, September 1963

Grain boundary strengthening in strongly textured magnesium produced by hot rolling journal, December 1982

Effect of deformation temperature on Hall–Petch relationship registered for polycrystalline magnesium journal, January 2004

Deformation behavior of magnesium in the grain size spectrum from nano- to micrometer journal, March 2010

Plastic and fatigue behaviour of ultrafine-grained magnesium journal, June 2008

Effects of grain size on compressive behaviour in ultrafine grained pure Mg processed by equal channel angular pressing at room temperature journal, July 2011

Orientation influence on grain size effects in ultrafine-grained magnesium journal, March 2015

Influence of grain size on the compressive deformation of wrought Mg–3Al–1Zn journal, October 2004

The effect of grain refinement by warm equal channel angular extrusion on room temperature twinning in magnesium alloy ZK60 journal, April 2005

A rationale for the strong dependence of mechanical twinning on grain size journal, October 2008

The onset of twinning in metals: a constitutive description journal, November 2001

Enabling strain hardening simulations with dislocation dynamics journal, July 2007

The strength of binary junctions in hexagonal close-packed crystals journal, May 2013

Toward a further understanding of intermittent plastic responses in the compressed single/bicrystalline micropillars journal, May 2012

Strengthening mechanism in micro-polycrystals with penetrable grain boundaries by discrete dislocation dynamics simulation and Hall–Petch effect journal, October 2009

Thickness effects in polycrystalline thin films: Surface constraint versus interior constraint journal, June 2011

The role of twinning deformation on the hardening response of polycrystalline magnesium from discrete dislocation dynamics simulations journal, June 2015

Formation and slip of pyramidal dislocations in hexagonal close-packed magnesium single crystals journal, June 2014

Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B journal, June 2005

Molecular Dynamics Simulations of Orientation Effects During Tension, Compression, and Bending Deformations of Magnesium Nanocrystals journal, October 2015

Dislocation motion in magnesium: a study by molecular statics and molecular dynamics journal, August 2009

Towards resolving the anonymity of pyramidal slip in magnesium journal, September 2015

Additional modes of deformation twinning in magnesium journal, December 1957

A constitutive model for hcp materials deforming by slip and twinning journal, October 2003

Highly anisotropic slip-behavior of pyramidal I 〈 c+a 〉 dislocations in hexagonal close-packed magnesium journal, November 2014

Computer simulation of the structure and mobility of twinning disclocations in H.C.P. Metals journal, July 1991

Atomic shearing and shuffling accompanying the motion of twinning disconnections in Zirconium journal, April 2013

Statistical analyses of deformation twinning in magnesium journal, May 2010

Growth of deformation twins in zinc crystals journal, September 1966

The incorporation of basal slip dislocations in {10 1 2} twins in zinc crystals journal, January 1969

Reactions of lattice dislocations with grain boundaries in Mg: Implications on the micro scale from atomic-scale calculations journal, May 2014

A new model for {10 1 2} twin growth in hcp metals journal, February 1996

Why are { 10 1 ¯ 2 } twins profuse in magnesium? journal, February 2015

On the relationship between the “shuffling-dominated” and “shear-dominated” mechanisms for twinning in magnesium journal, August 2013

Atomic-Scale Comparison Between Twin Growth Mechanisms in Magnesium journal, February 2014

Advances in Discrete Dislocation Dynamics Modeling of Size-Affected Plasticity book, January 2016

The influence of lamellar twins on deformation mechanism in nanocrystalline magnesium under uniaxial compression journal, July 2019

The effect of strain rate on the mechanisms of plastic flow and failure of an ECAE AZ31B magnesium alloy journal, July 2019

In Situ Time-Resolved Measurements of Extension Twinning During Dynamic Compression of Polycrystalline Magnesium journal, April 2018

Grain size constraints on twin expansion in hexagonal close packed crystals journal, October 2016

Thermo-mechanical response of single-phase face-centered-cubic Al x CoCrFeNi high-entropy alloy microcrystals journal, March 2018

Microstructures and mechanical behavior of magnesium processed by ECAP at ice-water temperature journal, April 2018

Analysis of microstructure and properties of commercially cast Mg after a single room-temperature ECAP journal, November 2018

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Size Effect on Mechanical Properties and Texture of Pure Copper Foil by Cold Rolling journal, May 2017

Microstructures and Mechanical Properties of Commercially Pure Ti Processed by Rotationally Accelerated Shot Peening journal, March 2018

Enhanced Stretch Formability of AZ31 Magnesium Alloy Thin Sheet by Induced Precompression and Sequent Annealing journal, August 2018

Discerning size effect strengthening in ultrafine-grained Mg thin films
journal, March 2014

Effects of preferred orientation on the grain size dependence of yield strength in metals
journal, September 1963

Grain boundary strengthening in strongly textured magnesium produced by hot rolling
journal, December 1982

Effect of deformation temperature on Hall–Petch relationship registered for polycrystalline magnesium
journal, January 2004

Deformation behavior of magnesium in the grain size spectrum from nano- to micrometer
journal, March 2010

Plastic and fatigue behaviour of ultrafine-grained magnesium
journal, June 2008

Effects of grain size on compressive behaviour in ultrafine grained pure Mg processed by equal channel angular pressing at room temperature
journal, July 2011

Orientation influence on grain size effects in ultrafine-grained magnesium
journal, March 2015

Influence of grain size on the compressive deformation of wrought Mg–3Al–1Zn
journal, October 2004

The effect of grain refinement by warm equal channel angular extrusion on room temperature twinning in magnesium alloy ZK60
journal, April 2005

A rationale for the strong dependence of mechanical twinning on grain size
journal, October 2008

The onset of twinning in metals: a constitutive description
journal, November 2001

Enabling strain hardening simulations with dislocation dynamics
journal, July 2007

The strength of binary junctions in hexagonal close-packed crystals
journal, May 2013

Toward a further understanding of intermittent plastic responses in the compressed single/bicrystalline micropillars
journal, May 2012

Strengthening mechanism in micro-polycrystals with penetrable grain boundaries by discrete dislocation dynamics simulation and Hall–Petch effect
journal, October 2009

Thickness effects in polycrystalline thin films: Surface constraint versus interior constraint
journal, June 2011

The role of twinning deformation on the hardening response of polycrystalline magnesium from discrete dislocation dynamics simulations
journal, June 2015

Formation and slip of pyramidal dislocations in hexagonal close-packed magnesium single crystals
journal, June 2014

Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B
journal, June 2005

Molecular Dynamics Simulations of Orientation Effects During Tension, Compression, and Bending Deformations of Magnesium Nanocrystals
journal, October 2015

Dislocation motion in magnesium: a study by molecular statics and molecular dynamics
journal, August 2009

Towards resolving the anonymity of pyramidal slip in magnesium
journal, September 2015

Additional modes of deformation twinning in magnesium
journal, December 1957

A constitutive model for hcp materials deforming by slip and twinning
journal, October 2003

Highly anisotropic slip-behavior of pyramidal I 〈 c+a 〉 dislocations in hexagonal close-packed magnesium
journal, November 2014

Computer simulation of the structure and mobility of twinning disclocations in H.C.P. Metals
journal, July 1991

Atomic shearing and shuffling accompanying the motion of twinning disconnections in Zirconium
journal, April 2013

Statistical analyses of deformation twinning in magnesium
journal, May 2010

Growth of deformation twins in zinc crystals
journal, September 1966

The incorporation of basal slip dislocations in {10 1 2} twins in zinc crystals
journal, January 1969

Reactions of lattice dislocations with grain boundaries in Mg: Implications on the micro scale from atomic-scale calculations
journal, May 2014

A new model for {10 1 2} twin growth in hcp metals
journal, February 1996

Why are ${10 \bar{1} 2}$ twins profuse in magnesium?
journal, February 2015

On the relationship between the “shuffling-dominated” and “shear-dominated” mechanisms for twinning in magnesium
journal, August 2013

Atomic-Scale Comparison Between Twin Growth Mechanisms in Magnesium
journal, February 2014

Advances in Discrete Dislocation Dynamics Modeling of Size-Affected Plasticity
book, January 2016

The influence of lamellar twins on deformation mechanism in nanocrystalline magnesium under uniaxial compression
journal, July 2019

The effect of strain rate on the mechanisms of plastic flow and failure of an ECAE AZ31B magnesium alloy
journal, July 2019

In Situ Time-Resolved Measurements of Extension Twinning During Dynamic Compression of Polycrystalline Magnesium
journal, April 2018

Grain size constraints on twin expansion in hexagonal close packed crystals
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