Effects of ion irradiation on Zr52.5Cu17.9Ni14.6Al10Ti5 (BAM-11) bulk metallic glass

Perez-Bergquist, Alejandro G.; Bei, Hongbin; Leonard, Keith J.; Zhang, Yongfeng; Zinkle, S.J.

doi:10.1016/j.intermet.2014.04.016

Cited by 40 publications

(16 citation statements)

References 32 publications

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“…The metallic glass material, which makes up the nanolattice, likely underwent slight density reduction as a result of irradiation due to atomic‐level changes. Previous investigations on the influence of irradiation on metallic glass strength have had mixed results: the strength has been reported to an increase, not change, and decrease in response to irradiation. This variability may be due to differences in the irradiation conditions, and to the nature of how specific metallic glasses responds to certain levels of irradiation.…”

Section: Discussionmentioning

confidence: 95%

Irradiation Enhances Strength and Deformability of Nano‐Architected Metallic Glass

2018

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The quest for radiation-damage tolerant materials has found good candidates in nanoporous metals, whose abundance of free surfaces provides ample sinks for radiation-induced defects, as well as in metallic glasses, whose characteristic failure via shear banding can be alleviated by irradiation. This type of catastrophic failure in metallic glass can also be suppressed by reducing their dimensions to the nanoscale. To combine the beneficial effects of resilience against irradiation in materials containing many free surfaces and nano-sized metallic glasses, the authors fabricate Zr-Ni-Al metallic glass nano-architecture and irradiate them with 12 MeV Ni 4þ ions. These 3D nanolattices are composed of hollow beams of sputtered metallic glass with beam wall thicknesses %10-100 nm, with a relative density of %5%, which renders them to be 20 times lighter than their bulk-level counterparts. The authors find that the thickest-walled nanolattices, those with a median wall thickness of %88 nm, are able to withstand irradiation without significant contraction; all other substantially shrunk; and collapsed upon irradiation. In situ nanomechanical experiments on the irradiated samples compressed inside a scanning electron microscope (SEM) reveal substantial improvement in mechanical response upon irradiation, with an average increase in yield strength of 35.7% and a significant enhancement in deformability. Enhanced deformability upon irradiation is apparent from the nanolattices' accommodation of larger strains before any kind of failure, as well as the presence of smaller strain bursts and stress drops throughout the stress-strain response. The irradiated nanolattices are largely intact after compression, with in situ SEM videos demonstrating a layerby-layer like collapse in the irradiated nanolattices in contrast to the catastrophic failure with complete destruction of the failed layers observed in equivalent asfabricated samples. This work points to nano-architected metallic glasses being a promising candidate for creating ultra-lightweight, radiation tolerant materials, and irradiation as a promising technique for improving the mechanical response of metallic glass nanolattices with stiffness on the order of 250 MPa.

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Section: Discussionmentioning

confidence: 95%

Irradiation Enhances Strength and Deformability of Nano‐Architected Metallic Glass

2018

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“…These variations were attributed to the mobile-hydrogen-assisted softening and immobile hydrogen trapped inside Zr-rich interstitial sites that results in a densely packed structure, respectively [273,274]. Irradiation can tailor the amorphous structure, since the bombardment of MGs with energetic particles such as electrons, neutrons, and ions induce structural heterogeneities [275,276]. Irradiation effects on the mechanical behavior of MGs was also examined via nanoindentation [276][277][278].…”

Section: Environmental Effectsmentioning

confidence: 99%

Indentation of glasses

Rouxel

Jang

Ramamurty

2021

Progress in Materials Science

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“…The structure-property correlations of amorphous materials subjected to radiation are different from those of crystalline nature and are still not well understood. This knowledge gap is particularly pronounced for ceramic materials since most studies concerning the mechanical performance of disordered materials tend to focus on metallic glasses [45][46][47][48][49][50]. Unlike crystalline solids, amorphous materials lack long-range order and do not contain crystallographic point defects.…”

Section: Transmission Electron Microscopy (Tem)mentioning

confidence: 99%