3d puzzle in cube pattern for anisotropic/isotropic mechanical control of structure fabricated bymetal additivemanufacturing

Naoko Ikeo, Hidetsugu Fukuda, Aira Matsugaki, Toru Inoue, Ai Serizawa, Tadaaki Matsuzaka, Takuya Ishimoto, Ryosuke Ozasa, Ozkan Gokcekaya, Takayoshi Nakano

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Metal additive manufacturing is a powerful tool for providing the desired functional performance through a three-dimensional (3D) structural design. Among the material functions, anisotropic mechanical properties are indispensable for enabling the capabilities of structural materials for living tissues. For biomedical materials to replace bone function, it is necessary to provide an anisotropic mechanical property that mimics that of bones. For desired control of the mechanical performance of the materials, we propose a novel 3D puzzle structure with cube-shaped parts comprising 27 (3 × 3 × 3) unit compartments. We designed and fabricated a Co–Cr–Mo composite structure through spatial control of the positional arrangement of powder/solid parts using the laser powder bed fusion (L-PBF) method. The mechanical function of the fabricated structure can be predicted using the rule of mixtures based on the arrangement pattern of each part. The solid parts in the cubic structure were obtained by melting and solidifying the metal powder with a laser, while the powder parts were obtained through the remaining nonmelted powders inside the structure. This is the first report to achieve an innovative material design that can provide an anisotropic Young’s modulus by arranging the powder and solid parts using additive manufacturing technology.

Original languageEnglish
Article number959
JournalCrystals
Volume11
Issue number8
DOIs
Publication statusPublished - 2021 Aug

Keywords

  • Additive manufacturing
  • Bone tissue anisotropy
  • Co–Cr–Mo
  • Laser powder bed fusion
  • Mechanical function

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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