Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses

Li, Weidong; Bei, Hongbin; Gao, Yanfei

doi:10.1016/j.intermet.2016.09.001

Title: Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses

Abstract

Our recent experiments in notched bulk metallic glasses have found reduced, or insensitive, or improved strengths, while in many of these cases the ductile strain prior to final failure is enhanced. First, although the inverse notch effect is explained by a shift from shear localization to cavitation failure, it is suggested in this work that the synergistic effect between cohesive fracture at the notched area and shear bands emanating from the notch roots may extend the parametric space for the notch insensitive behavior. Second, the dependence of shear band patterns on notch geometric factors is determined by the Rudnicki-Rice theory and the free-volume-based finite element simulations. Our results suggest conditions for shear band multiplication to take place and for the shear-localization-induced failure to be delayed.

Authors:

Li, Weidong ^[1]; Bei, Hongbin ^[2]; Gao, Yanfei ^[3]

Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

Publication Date:: Wed Sep 21 00:00:00 EDT 2016

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1329744

Alternate Identifier(s):: OSTI ID: 1359219

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Intermetallics

Additional Journal Information:: Journal Volume: 79; Journal Issue: C; Journal ID: ISSN 0966-9795

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Notch sensitivity; Cohesive crack; Shear bands

Citation Formats


                    Li, Weidong, Bei, Hongbin, and Gao, Yanfei. Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses.  United States: N. p., 2016. 
Web.  doi:10.1016/j.intermet.2016.09.001.

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                    Li, Weidong, Bei, Hongbin, & Gao, Yanfei. Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses.  United States.  https://doi.org/10.1016/j.intermet.2016.09.001

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                    Li, Weidong, Bei, Hongbin, and Gao, Yanfei. Wed .  
"Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses".  United States.  https://doi.org/10.1016/j.intermet.2016.09.001.  https://www.osti.gov/servlets/purl/1329744.

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@article{osti_1329744,

  title        = {Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses},

  author       = {Li, Weidong and Bei, Hongbin and Gao, Yanfei},

  abstractNote = {Our recent experiments in notched bulk metallic glasses have found reduced, or insensitive, or improved strengths, while in many of these cases the ductile strain prior to final failure is enhanced. First, although the inverse notch effect is explained by a shift from shear localization to cavitation failure, it is suggested in this work that the synergistic effect between cohesive fracture at the notched area and shear bands emanating from the notch roots may extend the parametric space for the notch insensitive behavior. Second, the dependence of shear band patterns on notch geometric factors is determined by the Rudnicki-Rice theory and the free-volume-based finite element simulations. Our results suggest conditions for shear band multiplication to take place and for the shear-localization-induced failure to be delayed.},

  doi          = {10.1016/j.intermet.2016.09.001},

  journal      = {Intermetallics},

  number       = C,

  volume       = 79,

  place        = {United States},

  year         = {Wed Sep 21 00:00:00 EDT 2016},

  month        = {Wed Sep 21 00:00:00 EDT 2016}

}

Copy to clipboard

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Works referencing / citing this record:

Remarks on the Notch Sensitivity of Bulk Metallic Glasses
journal, December 2019

Zhao, Yanchun; Gao, Yanfei
JOM, Vol. 72, Issue 2
DOI: 10.1007/s11837-019-03949-z

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Similar Records

Title: Effects of geometric factors and shear band patterns on notch sensitivity in bulk metallic glasses

Abstract

Citation Formats

Mean stress effects on flow localization and failure in a bulk metallic glass journal, August 2001

Plastic deformability of metallic glass by artificial macroscopic notches journal, September 2010

Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches journal, March 2011

Metallic glasses: Notch-insensitive materials journal, May 2012

Designing tensile ductility in metallic glasses journal, July 2013

Mechanisms of Failure in Nanoscale Metallic Glass journal, September 2014

Origin of anomalous inverse notch effect in bulk metallic glasses journal, November 2015

Numerical study of the notch effect on the malleability of bulk metallic glasses based on the free-volume theory journal, February 2016

Necking and notch strengthening in metallic glass with symmetric sharp-and-deep notches journal, May 2015

On the notch sensitivity of CuZr metallic glasses journal, August 2013

Notch sensitivity in nanoscale metallic glass specimens: Insights from continuum simulations journal, January 2016

Material Failure by Void Growth to Coalescence book, January 1989

Remarks on Crack-Bridging Concepts journal, August 1992

Notch-sensitivity and shear bands in brittle matrix composites journal, September 1994

On the shear-band direction in metallic glasses journal, June 2011

Interface Constraints on Shear Band Patterns in Bonded Metallic Glass Films Under Microindentation journal, January 2012

Thin-film metallic glasses for substrate fatigue-property improvements journal, June 2014

Cavitation in materials with distributed weak zones: Implications on the origin of brittle fracture in metallic glasses journal, April 2013

Cavitation in brittle metallic glasses – Effects of stress state and distributed weak zones journal, December 2014

Nature of crack-tip plastic zone in metallic glasses journal, February 2016

A simple technique for avoiding convergence problems in finite element simulations of crack nucleation and growth on cohesive interfaces journal, March 2004

The relation between crack growth resistance and fracture process parameters in elastic-plastic solids journal, August 1992

Intergranular strain evolution near fatigue crack tips in polycrystalline metals journal, November 2011

Deformation fields near a steady fatigue crack with anisotropic plasticity journal, March 2016

Failure criterion for metallic glasses journal, December 2011

Shear bands mediate cavitation in brittle metallic glasses journal, April 2013

Cryogenic-temperature-induced transition from shear to dilatational failure in metallic glasses journal, September 2014

Local heating associated with crack tip plasticity in Zr–Ti–Ni–Cu–Be bulk amorphous metals journal, March 1999

On the mechanism and the length scales involved in the ductile fracture of a bulk metallic glass journal, March 2013

Conditions for the localization of deformation in pressure-sensitive dilatant materials journal, December 1975

A microscopic mechanism for steady state inhomogeneous flow in metallic glasses journal, April 1977

An implicit finite element method for simulating inhomogeneous deformation and shear bands of amorphous alloys based on the free-volume model journal, October 2006

Mode I crack tip fields in amorphous materials with application to metallic glasses journal, November 2007

Mixed mode (I and II) crack tip fields in bulk metallic glasses journal, November 2009

Length scale effects on the shear localization process in metallic glasses: A theoretical and computational study journal, August 2011

Remarks on the Notch Sensitivity of Bulk Metallic Glasses journal, December 2019

Mean stress effects on flow localization and failure in a bulk metallic glass
journal, August 2001

Plastic deformability of metallic glass by artificial macroscopic notches
journal, September 2010

Comparison of compressive deformation and fracture behaviors of Zr- and Ti-based metallic glasses with notches
journal, March 2011

Metallic glasses: Notch-insensitive materials
journal, May 2012

Designing tensile ductility in metallic glasses
journal, July 2013

Mechanisms of Failure in Nanoscale Metallic Glass
journal, September 2014

Origin of anomalous inverse notch effect in bulk metallic glasses
journal, November 2015

Numerical study of the notch effect on the malleability of bulk metallic glasses based on the free-volume theory
journal, February 2016

Necking and notch strengthening in metallic glass with symmetric sharp-and-deep notches
journal, May 2015

On the notch sensitivity of CuZr metallic glasses
journal, August 2013

Notch sensitivity in nanoscale metallic glass specimens: Insights from continuum simulations
journal, January 2016

Material Failure by Void Growth to Coalescence
book, January 1989

Remarks on Crack-Bridging Concepts
journal, August 1992

Notch-sensitivity and shear bands in brittle matrix composites
journal, September 1994

On the shear-band direction in metallic glasses
journal, June 2011

Interface Constraints on Shear Band Patterns in Bonded Metallic Glass Films Under Microindentation
journal, January 2012

Thin-film metallic glasses for substrate fatigue-property improvements
journal, June 2014

Cavitation in materials with distributed weak zones: Implications on the origin of brittle fracture in metallic glasses
journal, April 2013

Cavitation in brittle metallic glasses – Effects of stress state and distributed weak zones
journal, December 2014

Nature of crack-tip plastic zone in metallic glasses
journal, February 2016

A simple technique for avoiding convergence problems in finite element simulations of crack nucleation and growth on cohesive interfaces
journal, March 2004

The relation between crack growth resistance and fracture process parameters in elastic-plastic solids
journal, August 1992

Intergranular strain evolution near fatigue crack tips in polycrystalline metals
journal, November 2011

Deformation fields near a steady fatigue crack with anisotropic plasticity
journal, March 2016

Failure criterion for metallic glasses
journal, December 2011

Shear bands mediate cavitation in brittle metallic glasses
journal, April 2013

Cryogenic-temperature-induced transition from shear to dilatational failure in metallic glasses
journal, September 2014

Local heating associated with crack tip plasticity in Zr–Ti–Ni–Cu–Be bulk amorphous metals
journal, March 1999

On the mechanism and the length scales involved in the ductile fracture of a bulk metallic glass
journal, March 2013

Conditions for the localization of deformation in pressure-sensitive dilatant materials
journal, December 1975

A microscopic mechanism for steady state inhomogeneous flow in metallic glasses
journal, April 1977

An implicit finite element method for simulating inhomogeneous deformation and shear bands of amorphous alloys based on the free-volume model
journal, October 2006

Mode I crack tip fields in amorphous materials with application to metallic glasses
journal, November 2007

Mixed mode (I and II) crack tip fields in bulk metallic glasses
journal, November 2009

Length scale effects on the shear localization process in metallic glasses: A theoretical and computational study
journal, August 2011

Remarks on the Notch Sensitivity of Bulk Metallic Glasses
journal, December 2019