Manufacture and property characterization of interconnected pore-gradient TPMS materials

Cui，Yaole1,2,3; Gain，Asit Kumar1,2,3; Zhang，Liangchi1,2,3; Li，Zhen1,2,3

2024-02-01

10.1016/j.msea.2024.146100

Materials Science and Engineering: A   影响因子和分区

0921-5093

The fabrication of interconnected pore-gradient metallic artificial implants mirroring bone structures with excellent mechanical properties is a significant challenge in biomedical applications. Utilizing selective laser melting (SLM) on stainless-steel 316 alloy, we generated four triply periodic minimal surface (TPMS) structures, integrating TiB nanoparticles for cell size grading of diamond structure. The resulting nanocomposite improved the mechanical properties, including nano-hardness, ultimate compressive stress and Young's modulus, compared to plain stainless-steel. These enhancements were attributed to the uniform dispersion of TiB nanoparticles in both grain interior and boundaries, as well as the refinement of the matrix grain structure. The incorporation of TiB in the interconnected pore-gradient structure effectively matched the ultimate compressive stress (223 ± 17.3 MPa) to closely match that of human cortical bone (205 ± 17.3 MPa). This technique, therefore, appears capable of overcoming existing challenges in aligning the microstructures and mechanical properties of human bones.

Biomaterials Electron microscopy Grains and interfaces Laser methods

SCI ; EI

英语

通讯

MATERIALS SCIENCE

2-s2.0-85182906137

Scopus

1.Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics,China
2.SUSTech Institute for Manufacturing Innovation,China
3.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Cui，Yaole,Gain，Asit Kumar,Zhang，Liangchi,et al. Manufacture and property characterization of interconnected pore-gradient TPMS materials[J]. Materials Science and Engineering: A,2024,892.

Cui，Yaole,Gain，Asit Kumar,Zhang，Liangchi,&Li，Zhen.(2024).Manufacture and property characterization of interconnected pore-gradient TPMS materials.Materials Science and Engineering: A,892.

Cui，Yaole,et al."Manufacture and property characterization of interconnected pore-gradient TPMS materials".Materials Science and Engineering: A 892(2024).