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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.14307 |
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| _version_ | 1866912202776117248 |
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| author | Duport, Mathis Martin, Guilhem Lhuissier, Pierre Blandin, Jean-Jacques Prima, Frédéric Dendievel, Rémy |
| author_facet | Duport, Mathis Martin, Guilhem Lhuissier, Pierre Blandin, Jean-Jacques Prima, Frédéric Dendievel, Rémy |
| contents | We investigate the effect of the microstructure on the mechanical response of lattice structures made of a defect tolerant Ti-14 Mo binary alloy fabricated by Electron Powder Bed Fusion. Some of the lattice structures were subjected to different heat treatments to compare different microstructures: a two-phase $α$+$β$ microstructure inherited from the fabrication (as-built), a full $β$-metastable microstructure, and a $β$-metastable microstructure strengthened via nanoprecipitation of the $ω$iso phase. We demonstrate that the macroscopic mechanical behavior of one of the most popular stretching-dominated lattice structure, namely the octet-truss, can be tailored through microstructural optimization by increasing the tolerance to plastic buckling of the constitutive struts. Defect-tolerant materials pave the way towards lattice structures fabricated by additive manufacturing with optimized energy absorption performances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14307 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | 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 Medical Physics We investigate the effect of the microstructure on the mechanical response of lattice structures made of a defect tolerant Ti-14 Mo binary alloy fabricated by Electron Powder Bed Fusion. Some of the lattice structures were subjected to different heat treatments to compare different microstructures: a two-phase $α$+$β$ microstructure inherited from the fabrication (as-built), a full $β$-metastable microstructure, and a $β$-metastable microstructure strengthened via nanoprecipitation of the $ω$iso phase. We demonstrate that the macroscopic mechanical behavior of one of the most popular stretching-dominated lattice structure, namely the octet-truss, can be tailored through microstructural optimization by increasing the tolerance to plastic buckling of the constitutive struts. Defect-tolerant materials pave the way towards lattice structures fabricated by additive manufacturing with optimized energy absorption performances. |
| title | Stabilizing post-yielding behavior of a stretching dominated lattice structure through microstructural optimization |
| topic | Medical Physics |
| url | https://arxiv.org/abs/2501.14307 |