Stabilizing post-yielding behavior of a stretching dominated lattice structure through microstructural optimization

Duport, Mathis; Martin, Guilhem; Lhuissier, Pierre; Blandin, Jean‐Jacques; Prima, Frédéric; Dendievel, Rémy

doi:10.1016/j.scriptamat.2022.114887

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…The influence of microstructure on the mechanical behavior of additively manufactured lattices has been limitedly studied [26,27]. Babamiri et al [26] investigated the relationship between the manufacturing variables, such as post-processing heat treatment, and the quasi-static and dynamic behavior of various lattice topologies made of ductile Inconel 718 material, including the octet truss topology.…”

Section: Introductionmentioning

confidence: 99%

“…The heat treatment affected the microstructure of the lattice material, wherein the improved grain morphology led to an increase in flow stress by 25% in a 4 mm unit cell size with a 0.689 mm strut diameter. Another study by Duport et al [27] explored the impact of microstructure optimization on the mechanical behavior of a binary beta-Ti-14Mo octet truss lattice fabricated by PBF-EB. The mechanical behavior of three different microstructures (α + β; metastable β; and β + ω iso ) were compared.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Heat Treatment on the Mechanical Performance of Ti-21s Octet Truss Lattice Structure Fabricated by Laser Powder Bed Fusion

Jam

Pellizzari

Emanuelli

et al. 2023

Preprint

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment on the Mechanical Performance of Ti-21s Octet Truss Lattice Structure Fabricated by Laser Powder Bed Fusion

Jam

Pellizzari

Emanuelli

et al. 2023

Preprint

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Influence of heat treatment on the mechanical performance of Ti21S octet truss lattice structure fabricated by laser powder bed fusion

Jam,

Pellizzari,

Emanuelli

et al. 2023

Prog Addit Manuf

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Additive manufacturing allows the production of complex and custom designs including lattice structures—porous metallic structures with designed porosity and tailored mechanical properties. The bulk material has a key influence on the eventual properties of the porous lattice structure material. Among metallic biomaterials, beta-titanium alloys are gaining increasing interested because of their low Young’s modulus. In this work, the heat treatment of beta-Ti21S alloy is investigated in the context of octet truss lattice structures. The intention is to improve the performance of these structures for their reliable use in biomedical applications such as for bone implants. The study makes use of laser powder bed fusion of representative samples, uses microCT for physical characterization of manufacturing quality, while quasi-static and fatigue testing is performed to evaluate the performance of these lattice structures. The results indicate that the heat treatment significantly improves the fatigue properties of the lattice structures while changing the quasi-static failure mode more towards a stretch-based failure mode. These findings have practical implications for the implementation of this material and structure combination in medical implants. By enhancing the performance of the lattice structures, the study paves the way for their reliable use in biomedical applications.

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Processing, microstructures and mechanical response of a β-metastable Ti-14Mo alloy fabricated by Electron Beam Powder Bed Fusion

Duport

Lhuisser

Blandin

et al. 2023

Additive Manufacturing

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Stabilizing post-yielding behavior of a stretching dominated lattice structure through microstructural optimization

Cited by 4 publications

References 30 publications

Influence of Heat Treatment on the Mechanical Performance of Ti-21s Octet Truss Lattice Structure Fabricated by Laser Powder Bed Fusion

Influence of Heat Treatment on the Mechanical Performance of Ti-21s Octet Truss Lattice Structure Fabricated by Laser Powder Bed Fusion

Influence of heat treatment on the mechanical performance of Ti21S octet truss lattice structure fabricated by laser powder bed fusion

Processing, microstructures and mechanical response of a β-metastable Ti-14Mo alloy fabricated by Electron Beam Powder Bed Fusion

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