3D Puzzle in Cube Pattern for Anisotropic/Isotropic Mechanical Control of Structure Fabricated by Metal Additive Manufacturing

Crystals

Ai Serizawa¹  Naoko Ikeo²  Toru Inoue³  Tadaaki Matsuzaka³  Takuya Ishimoto³  Takayoshi Nakano³  Aira Matsugaki³  Ozkan Gokcekaya³  Ryosuke Ozasa³  Hidetsugu Fukuda⁴ 

[1] Department of Materials Science and Engineering, Shibaura Institute of Technology, Toyosu, Koto-ku, Tokyo 135-8548, Japan;Department of Mechanical Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan;Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan;Electronic Mechanical Engineering Department, National Institute of Technology, Yuge College, 1000, Shimoyuge, Yuge, Kamijima, Ochi 794-2593, Japan;

关键词: additive manufacturing;    laser powder bed fusion;    bone tissue anisotropy;    Co–Cr–Mo;    mechanical function;   

DOI  :  10.3390/cryst11080959

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown