Effect of loading rate on dynamic fracture morphology of a Zr-based bulk metallic glass

Gauri R. Khanolkar; Shima Haghighat; Andrea M. Hodge; Katharine M. Flores; Veronica Eliasson

doi:10.2320/matertrans.M2014467

Effect of loading rate on dynamic fracture morphology of a Zr-based bulk metallic glass

Gauri R. Khanolkar
, Shima Haghighat
, Andrea M. Hodge
, Katharine M. Flores
, Veronica Eliasson

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Low-velocity plate impact experiments using a single-stage gas-gun are performed on Zr_58.5Cu_15.6Ni_12.8Al_10.3Nb_2.8. Compressive fracture surfaces of the samples subjected to varying impact velocities and stress amplitudes are evaluated in order to study their loading rate dependence. Samples impacted at increasing loading rates, from increasing velocities of impact, show a larger extent of localized melting while those subjected to increasing stress show a transition from ductile to brittle fracture. These observations suggest that the mechanisms and morphology of fracture are strain-rate dependent.

Original language	English
Pages (from-to)	840-843
Number of pages	4
Journal	Materials Transactions
Volume	56
Issue number	6
DOIs	https://doi.org/10.2320/matertrans.M2014467
State	Published - 2015

Keywords

Bulk metallic glass (BMG)
Impact experiment
Scanning electron microscopy (SEM)

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10.2320/matertrans.M2014467

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title = "Effect of loading rate on dynamic fracture morphology of a Zr-based bulk metallic glass",

abstract = "Low-velocity plate impact experiments using a single-stage gas-gun are performed on Zr58.5Cu15.6Ni12.8Al10.3Nb2.8. Compressive fracture surfaces of the samples subjected to varying impact velocities and stress amplitudes are evaluated in order to study their loading rate dependence. Samples impacted at increasing loading rates, from increasing velocities of impact, show a larger extent of localized melting while those subjected to increasing stress show a transition from ductile to brittle fracture. These observations suggest that the mechanisms and morphology of fracture are strain-rate dependent.",

keywords = "Bulk metallic glass (BMG), Impact experiment, Scanning electron microscopy (SEM)",

author = "Khanolkar, \{Gauri R.\} and Shima Haghighat and Hodge, \{Andrea M.\} and Flores, \{Katharine M.\} and Veronica Eliasson",

note = "Publisher Copyright: {\textcopyright} 2015 The Japan Institute of Metals and Materials.",

year = "2015",

doi = "10.2320/matertrans.M2014467",

language = "English",

volume = "56",

pages = "840--843",

journal = "Materials Transactions",

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AU - Khanolkar, Gauri R.

AU - Haghighat, Shima

AU - Hodge, Andrea M.

AU - Flores, Katharine M.

AU - Eliasson, Veronica

PY - 2015

Y1 - 2015

N2 - Low-velocity plate impact experiments using a single-stage gas-gun are performed on Zr58.5Cu15.6Ni12.8Al10.3Nb2.8. Compressive fracture surfaces of the samples subjected to varying impact velocities and stress amplitudes are evaluated in order to study their loading rate dependence. Samples impacted at increasing loading rates, from increasing velocities of impact, show a larger extent of localized melting while those subjected to increasing stress show a transition from ductile to brittle fracture. These observations suggest that the mechanisms and morphology of fracture are strain-rate dependent.

AB - Low-velocity plate impact experiments using a single-stage gas-gun are performed on Zr58.5Cu15.6Ni12.8Al10.3Nb2.8. Compressive fracture surfaces of the samples subjected to varying impact velocities and stress amplitudes are evaluated in order to study their loading rate dependence. Samples impacted at increasing loading rates, from increasing velocities of impact, show a larger extent of localized melting while those subjected to increasing stress show a transition from ductile to brittle fracture. These observations suggest that the mechanisms and morphology of fracture are strain-rate dependent.

KW - Bulk metallic glass (BMG)

KW - Impact experiment

KW - Scanning electron microscopy (SEM)

UR - https://www.scopus.com/pages/publications/84929932219

U2 - 10.2320/matertrans.M2014467

DO - 10.2320/matertrans.M2014467

M3 - Article

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VL - 56

SP - 840

EP - 843

JO - Materials Transactions

JF - Materials Transactions

IS - 6

ER -

Effect of loading rate on dynamic fracture morphology of a Zr-based bulk metallic glass

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Keywords

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