Atomistic observation of a crack tip approaching coherent twin boundaries

Liu, L.; Wang, J.; Gong, S. K.; Mao, S. X.

doi:10.1038/srep04397

Title: Atomistic observation of a crack tip approaching coherent twin boundaries

Abstract

Coherent twin boundaries (CTBs) in nano-twinned materials could improve crack resistance. However, the role of the CTBs during crack penetration has never been explored at atomic scale. Our in situ observation on nano-twinned Ag under a high resolution transmission electron microscope (HRTEM) reveals the dynamic processes of a crack penetration across the CTBs, which involve alternated crack tip blunting, crack deflection, twinning/detwinning and slip transmission across the CTBs. The alternated blunting processes are related to the emission of different types of dislocations at the crack tip and vary with the distance of the crack tip from the CTBs.

Authors:

Liu, L. ^[1]; Wang, J. ^[2]; Gong, S. K. ^[1]; Mao, S. X. ^[3]

Beihang Univ., Beijing (China). School of Materials Science and Engineering
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Pittsburgh, PA (United States). Dept. of Mechanical Engineering and Materials Science

Publication Date:: Tue Mar 18 00:00:00 EDT 2014

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)

OSTI Identifier:: 1624698

Grant/Contract Number:: AC52-06NA25396

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Science & technology - other topics; Structural properties; Transmission electron microscopy

Citation Formats


                    Liu, L., Wang, J., Gong, S. K., and Mao, S. X. Atomistic observation of a crack tip approaching coherent twin boundaries.  United States: N. p., 2014. 
Web.  doi:10.1038/srep04397.

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                    Liu, L., Wang, J., Gong, S. K., & Mao, S. X. Atomistic observation of a crack tip approaching coherent twin boundaries.  United States.  https://doi.org/10.1038/srep04397

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                    Liu, L., Wang, J., Gong, S. K., and Mao, S. X. Tue .  
"Atomistic observation of a crack tip approaching coherent twin boundaries".  United States.  https://doi.org/10.1038/srep04397.  https://www.osti.gov/servlets/purl/1624698.

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@article{osti_1624698,

  title        = {Atomistic observation of a crack tip approaching coherent twin boundaries},

  author       = {Liu, L. and Wang, J. and Gong, S. K. and Mao, S. X.},

  abstractNote = {Coherent twin boundaries (CTBs) in nano-twinned materials could improve crack resistance. However, the role of the CTBs during crack penetration has never been explored at atomic scale. Our in situ observation on nano-twinned Ag under a high resolution transmission electron microscope (HRTEM) reveals the dynamic processes of a crack penetration across the CTBs, which involve alternated crack tip blunting, crack deflection, twinning/detwinning and slip transmission across the CTBs. The alternated blunting processes are related to the emission of different types of dislocations at the crack tip and vary with the distance of the crack tip from the CTBs.},

  doi          = {10.1038/srep04397},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 4,

  place        = {United States},

  year         = {Tue Mar 18 00:00:00 EDT 2014},

  month        = {Tue Mar 18 00:00:00 EDT 2014}

}

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Enabling Ultrahigh Plastic Flow and Work Hardening in Twinned Gold Nanowires
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Deng, Chuang; Sansoz, Frederic
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Near-Ideal Strength in Gold Nanowires Achieved through Microstructural Design
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Deng, Chuang; Sansoz, Frederic
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Similar Records

Title: Atomistic observation of a crack tip approaching coherent twin boundaries

Abstract

Citation Formats

High Resolution Transmission Electron Microscope Observation of Zero-Strain Deformation Twinning Mechanisms in Ag journal, April 2011

HRTEM study of defects in twin boundaries of ultra-fine grained copper journal, February 2007

Enabling Ultrahigh Plastic Flow and Work Hardening in Twinned Gold Nanowires journal, April 2009

Shear response of Σ 3 { 112 } twin boundaries in face-centered-cubic metals journal, February 2011

Dislocation structures of Σ3 {112} twin boundaries in face centered cubic metals journal, July 2009

In situ observations of crack arrest and bridging by nanoscale twins in copper thin films journal, April 2012

Ultrahigh Strength and High Electrical Conductivity in Copper journal, April 2004

Near-ideal theoretical strength in gold nanowires containing angstrom scale twins journal, April 2013

The effect of nanoscale twin boundaries on fracture toughness in nanocrystalline Ni journal, December 2009

Deformation twinning in nanocrystalline materials journal, January 2012

Revealing the Maximum Strength in Nanotwinned Copper journal, January 2009

Structure and stability of Σ3 grain boundaries in face centered cubic metals journal, February 2013

Dislocation–dislocation and dislocation–twin reactions in nanocrystalline Al by molecular dynamics simulation journal, August 2003

Repulsive force of twin boundary on curved dislocations and its role on the yielding of twinned nanowires journal, July 2010

Fracture toughness and fatigue crack growth characteristics of nanotwinned copper journal, April 2011

Dislocation nucleation from a crack tip: An analysis based on the Peierls concept journal, January 1992

Toughening by nano-scaled twin boundaries in nanocrystals journal, June 2010

Plastic deformation mechanism in nanotwinned metals: An insight from molecular dynamics and mechanistic modeling journal, June 2012

Twinning dislocation multiplication at a coherent twin boundary journal, September 2011

Dislocation nucleation governed softening and maximum strength in nano-twinned metals journal, April 2010

Growth of Y-Shaped Nanorods through Physical Vapor Deposition journal, December 2005

The effect of twin plane spacing on the deformation of copper containing a high density of growth twins journal, September 2008

Direct observation of Lomer-Cottrell Locks during strain hardening in nanocrystalline nickel by in situ TEM journal, January 2013

Near-Ideal Strength in Gold Nanowires Achieved through Microstructural Design journal, September 2009

Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals journal, March 2008

Novel deformation mechanism of twinned nanowires journal, May 2006

Enhanced fracture toughness of bulk nanocrystalline Cu with embedded nanoscale twins journal, April 2009

Thermal stability of sputtered Cu films with nanoscale growth twins journal, May 2008

Modeling grain size dependent optimal twin spacing for achieving ultimate high strength and related high ductility in nanotwinned metals journal, August 2011

Detwinning mechanisms for growth twins in face-centered cubic metals journal, April 2010

Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals journal, March 2008

Enabling Ultrahigh Plastic Flow and Work Hardening in Twinned Gold Nanowires journal, April 2009

Near-Ideal Strength in Gold Nanowires Achieved through Microstructural Design journal, September 2009

Dislocation nucleation governed softening and maximum strength in nano-twinned metals journal, April 2010

Near-ideal theoretical strength in gold nanowires containing angstrom scale twins journal, April 2013

Direct observation of Lomer-Cottrell Locks during strain hardening in nanocrystalline nickel by in situ TEM journal, January 2013

Ultrahigh Strength and High Electrical Conductivity in Copper journal, April 2004

Revealing the Maximum Strength in Nanotwinned Copper journal, January 2009

Fracture, fatigue, and creep of nanotwinned metals journal, April 2016

Vertically twinned aluminum nano-pillars under tensile loading: a molecular dynamics study journal, December 2019

‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending text, January 2017

‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending text, January 2017

‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending journal, October 2017

Atomistic Simulation of Tensile Deformation Behavior of ∑5 Tilt Grain Boundaries in Copper Bicrystal journal, August 2014

Role of axial twin boundaries on deformation mechanisms in Cu nanopillars journal, December 2019

Effects of twin orientation and spacing on the mechanical properties of Cu nanowires journal, August 2017

High Resolution Transmission Electron Microscope Observation of Zero-Strain Deformation Twinning Mechanisms in Ag
journal, April 2011

HRTEM study of defects in twin boundaries of ultra-fine grained copper
journal, February 2007

Enabling Ultrahigh Plastic Flow and Work Hardening in Twinned Gold Nanowires
journal, April 2009

Shear response of $Σ 3 {112}$ twin boundaries in face-centered-cubic metals
journal, February 2011

Dislocation structures of Σ3 {112} twin boundaries in face centered cubic metals
journal, July 2009

In situ observations of crack arrest and bridging by nanoscale twins in copper thin films
journal, April 2012

Ultrahigh Strength and High Electrical Conductivity in Copper
journal, April 2004

Near-ideal theoretical strength in gold nanowires containing angstrom scale twins
journal, April 2013

The effect of nanoscale twin boundaries on fracture toughness in nanocrystalline Ni
journal, December 2009

Deformation twinning in nanocrystalline materials
journal, January 2012

Revealing the Maximum Strength in Nanotwinned Copper
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Structure and stability of Σ3 grain boundaries in face centered cubic metals
journal, February 2013

Dislocation–dislocation and dislocation–twin reactions in nanocrystalline Al by molecular dynamics simulation
journal, August 2003

Repulsive force of twin boundary on curved dislocations and its role on the yielding of twinned nanowires
journal, July 2010

Fracture toughness and fatigue crack growth characteristics of nanotwinned copper
journal, April 2011

Dislocation nucleation from a crack tip: An analysis based on the Peierls concept
journal, January 1992

Toughening by nano-scaled twin boundaries in nanocrystals
journal, June 2010

Plastic deformation mechanism in nanotwinned metals: An insight from molecular dynamics and mechanistic modeling
journal, June 2012

Twinning dislocation multiplication at a coherent twin boundary
journal, September 2011

Dislocation nucleation governed softening and maximum strength in nano-twinned metals
journal, April 2010

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The effect of twin plane spacing on the deformation of copper containing a high density of growth twins
journal, September 2008

Direct observation of Lomer-Cottrell Locks during strain hardening in nanocrystalline nickel by in situ TEM
journal, January 2013

Near-Ideal Strength in Gold Nanowires Achieved through Microstructural Design
journal, September 2009

Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals
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Novel deformation mechanism of twinned nanowires
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Enhanced fracture toughness of bulk nanocrystalline Cu with embedded nanoscale twins
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Thermal stability of sputtered Cu films with nanoscale growth twins
journal, May 2008

Modeling grain size dependent optimal twin spacing for achieving ultimate high strength and related high ductility in nanotwinned metals
journal, August 2011

Detwinning mechanisms for growth twins in face-centered cubic metals
journal, April 2010

Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals
journal, March 2008

Enabling Ultrahigh Plastic Flow and Work Hardening in Twinned Gold Nanowires
journal, April 2009

Near-Ideal Strength in Gold Nanowires Achieved through Microstructural Design
journal, September 2009

Dislocation nucleation governed softening and maximum strength in nano-twinned metals
journal, April 2010

Near-ideal theoretical strength in gold nanowires containing angstrom scale twins
journal, April 2013

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Ultrahigh Strength and High Electrical Conductivity in Copper
journal, April 2004

Revealing the Maximum Strength in Nanotwinned Copper
journal, January 2009

Fracture, fatigue, and creep of nanotwinned metals
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Vertically twinned aluminum nano-pillars under tensile loading: a molecular dynamics study
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‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending
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‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending
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‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending
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Atomistic Simulation of Tensile Deformation Behavior of ∑5 Tilt Grain Boundaries in Copper Bicrystal
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Role of axial twin boundaries on deformation mechanisms in Cu nanopillars
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Effects of twin orientation and spacing on the mechanical properties of Cu nanowires
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