3D metallic glass cellular structures

Liu, Ze; Chen, Wen; Carstensen, Josephine V.; Ketkaew, Jittisa; Mota, Rodrigo Miguel Ojeda; Guest, James K.; Schroers, Jan

doi:10.1016/j.actamat.2015.11.057

Cited by 74 publications

(19 citation statements)

References 63 publications

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“…These authors observed that while the periodic structures generally had a higher elastic modulus and yield strength compared to stochastic structures, the stochastic onees exhibited higher flaw tolerance [35]. To create 3D periodically architected metallic glass structures, one study utilized thermoplastic forming-based patterning of metallic glass sheets combined with parallel joining, which resulted in honeycomblike architectures exhibiting high elastic energy storability and absorption [36]. 3D periodically architected metallic glass cellular structures were also fabricated using electroless deposition of Ni-P metallic glass onto a sacrificial polymer microlattice [37].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…These Ni-P microlattices consisted of ~1 mm unit cells with metallic glass wall thicknesses of 60 -600 nm and reported structures with wall thicknesses above 150 nm failed catastrophically while those with wall thicknesses below 150 nm failed with plasticity [37]. The dimensions of metallic glass lattices in nearly all of these existing studies were far from the nanoscale, including ~1 mm unit cells and 20-70 μm wall thicknesses [35], cm-sized unit cells and ~0.4 mm wall thickness [36]. and mmsized unit cells and ~60-600 nm wall thicknesses [37].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

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3D nano-architected metallic glass: Size effect suppresses catastrophic failure

Liontas

Greer

2017

Acta Materialia

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We investigate the mechanical behavior of 3D periodically architected metallic glass nanolattices, constructed from hollow beams of sputtered Zr-Ni-Al metallic glass. Nanolattices composed of beams with different wall thicknesses are fabricated by varying the sputter deposition time, resulting in nanolattices with median wall thicknesses of ~88 nm, ~57 nm, ~38 nm, ~30 nm, ~20 nm, and ~10 nm. Uniaxial compression experiments conducted inside a scanning electron microscope reveal a transition from brittle, catastrophic failure in thickerwalled nanolattices (median wall thicknesses of ~88 and ~57 nm) to deformable, gradual, layerby-layer collapse in thinner-walled nanolattices (median wall thicknesses of ~38 nm and less).As the nanolattice wall thickness is varied, large differences in deformability are manifested through the severity of strain bursts, nanolattice recovery after compression, and in-situ images obtained during compression experiments. We explain the brittle-to-deformable transition that occurs as the nanolattice wall thickness decreases in terms of the "smaller is more deformable" material size effect that arises in nano-sized metallic glasses. This work demonstrates that the nano-induced failure-suppression size effect that emerges in small-scale metallic glasses can be proliferated to larger-scale materials by the virtue of architecting.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

3D nano-architected metallic glass: Size effect suppresses catastrophic failure

Liontas

Greer

2017

Acta Materialia

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“…The interface is expected to be intact, to form a high-strength bonding and to have other high-performance physical properties. Herein, due to the instantaneous process of HRS technique (much less than 1 ms) at room temperature, interface oxidation effect can be almost ruled out4041, which contributes to a well bonding condition at interface. It is advantageous comparing with the high temperature joining technique.…”

Section: Resultsmentioning

confidence: 99%

High-rate squeezing process of bulk metallic glasses

Fan

2017

Sci Rep

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High-rate squeezing process of bulk metallic glasses from a cylinder into an intact sheet achieved by impact loading is investigated. Such a large deformation is caused by plastic flow, accompanied with geometrical confinement, shear banding/slipping, thermo softening, melting and joining. Temperature rise during the high-rate squeezing process makes a main effect. The inherent mechanisms are illustrated. Like high-pressure torsion (HPT), equal channel angular pressing (ECAP) and surface mechanical attrition treatments (SMAT) for refining grain of metals, High-Rate Squeezing (HRS), as a multiple-functions technique, not only creates a new road of processing metallic glasses and other metallic alloys for developing advanced materials, but also directs a novel technology of processing, grain refining, coating, welding and so on for treating materials.

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“…However, they demonstrated higher flaw tolerance, which also plays a significant role in achieving desirable properties in engineering materials. Based on the two-dimensional MG honeycombs, Liu et al have developed some 3D MG honeycomb structures using a parallel joining technique [67]. Theoretical analyses have shown that with a good combination of both high strength and elastic limit, these 3D MG honeycomb structures can demonstrate a high plastic energy absorption capacity, superior to those cellular structures made of conventional metals and ceramics.…”

Section: Mg Honeycombsmentioning

confidence: 99%

Metallic Glass Structures for Mechanical-Energy-Dissipation Purpose: A Review

Chen

Cheng

Chan

et al. 2018

Metals

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Metallic glasses (MGs), a new class of advanced structural materials with extraordinary mechanical properties, such as high strength approaching the theoretical value and an elastic limit several times larger than the conventional metals, are being used to develop cellular structures with excellent mechanical-energy-dissipation performance. In this paper, the research progress on the development of MG structures for energy-dissipation applications is reviewed, including MG foams, MG honeycombs, cellular MGs with macroscopic cellular structures, microscopic MG lattice structures and kirigami MG structures. MG structures not only have high plastic energy absorption capacity superior to conventional cellular metals, but also demonstrate great potential for storing the elastic energy during cyclic loading. The deformation behavior as well as the mechanisms for the excellent energy-dissipation performance of varying kinds MG structures is compared and discussed. Suggestions on the future development/optimization of MG structures for enhanced energy-dissipation performance are proposed, which can be helpful for exploring the widespread structural-application of MGs.

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3D metallic glass cellular structures

Cited by 74 publications

References 63 publications

3D nano-architected metallic glass: Size effect suppresses catastrophic failure

3D nano-architected metallic glass: Size effect suppresses catastrophic failure

High-rate squeezing process of bulk metallic glasses

Metallic Glass Structures for Mechanical-Energy-Dissipation Purpose: A Review

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