Titanium Multi‐Topology Metamaterials with Exceptional Strength

Noronha, Jordan; Dash, Jason; Rogers, Jason; Leary, Martin; Brandt, Milan; Qian, Ma

doi:10.1002/adma.202308715

Cited by 15 publications

(1 citation statement)

References 37 publications

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“…Consequentially, with the introduction of increasingly mature LPBF AM technologies, hollow-strut metal lattice fabrication has evolved rapidly. 28–36 This evolution has enabled a recent systematic assessment of titanium alloy (Ti–6Al–4V) hollow-strut lattice metamaterials, 28–32,37,38 which exhibited much higher structural efficiency than solid-strut lattices (SSLs). The Ti–6Al–4V alloy was chosen for two main reasons, it offers (i) excellent LPBF manufacturability and (ii) high strength, medium density, and a range of unique properties, including being the implant alloy of choice.…”

Section: Introductionmentioning

confidence: 99%

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Noronha,

Leary,

Brandt

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Noronha,

Leary,

Brandt

et al. 2024

Mater. Adv.

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Additive Manufacturing of Anisotropic TC4 Cubic Hollow‐Strut Lattice Structures with High Specific Yield Strength: Optimization, Properties, and Failure Modes

Xu,

Ding,

Han

et al. 2024

Adv Eng Mater

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Additive manufacturing permits the precision design and meticulous fabrication of lattice structures, thereby unlocking their potential performance capabilities. Herein, to enhance the specific strength of the cubic lattice structure, three design strategies are applied: substituting solid struts with hollow ones, increasing the material proportion of vertical struts, and introducing cross plates into the hollow struts. The results demonstrate that the strategy of substituting solid struts with hollow ones effectively contributes to a substantial enhancement of 113% in the compressive yield strength of lattice structures. Furthermore, increasing the vertical material proportion from 70% to 85% while maintaining a constant relative density of 0.30, a significant enhancement is observed in both yield and ultimate strength. Additionally, introducing cross plates into the hollow struts at a vertical material proportion of 90% results in a remarkable enhancement of the specific yield strength to 230 MPa cm3 g−1, significantly surpassing that of the TC4 matrix. The optimized lattice structures exhibit exceptional uniaxial strength, tremendously exceeding the predicted limits of the Gibson–Ashby model. Thus, the Gibson–Ashby model is modified by considering the vertical material proportion Cv. These findings are expected to establish a foundational framework for the optimizing of anisotropic lattice structures by remarkably enhancing their specific strength.

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The Energy Absorption Characteristics and Sound Absorption Behavior of In Situ Integrated Aluminum Lattice Structure Filled Tubes

Wang,

et al. 2024

Adv Eng Mater

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Lattice structures, as integrated structure‐function engineering materials, have developed rapidly in industrial fields. In this study, the in situ integrated solid/hollow aluminum lattice structure filled tubes are designed and manufactured by a selective laser melting technique. The effects of structure parameters on compressive properties, energy absorption, and sound absorption are analyzed. The in situ integrated aluminum lattice structure filled tubes with hollow lattice structure and strengthened hollow lattice structure can achieve a wide adjustment of compressive property (31.04–185.64 MPa) and energy absorption density (11.21–51.70 MJ m−3) in a narrow density range. The compressive property and energy absorption are superior compared with ex situ aluminum lattice structure filled tubes due to the interaction and metallurgical bonding between the thin‐walled tubes and the aluminum lattice structures. The hollow structure design and altering its structure parameters can regulate the sound absorption coefficient and the corresponding peak frequency (the highest absorption peak is 0.723 at 2098 Hz). In addition, the hollow structure design can realize double absorption peaks (0.360 at 1462 Hz and 0.503 at 2122 Hz), presenting the potential for broadband sound absorption. Eventually, superior integrated energy/sound absorption structures can be obtained by the hollow structure design and its corresponding optimization.

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Titanium Multi‐Topology Metamaterials with Exceptional Strength

Cited by 15 publications

References 37 publications

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

AlSi10Mg hollow-strut lattice metamaterials by laser powder bed fusion

Additive Manufacturing of Anisotropic TC4 Cubic Hollow‐Strut Lattice Structures with High Specific Yield Strength: Optimization, Properties, and Failure Modes

The Energy Absorption Characteristics and Sound Absorption Behavior of In Situ Integrated Aluminum Lattice Structure Filled Tubes

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