Enhanced Energy Absorption of Additive-Manufactured Ti-6Al-4V Parts via Hybrid Lattice Structures

Park, Seong Je; Lee, Jun Hak; Yang, Jeongho; Moon, Seung Ki; Son, Yong; Park, Jiyong

doi:10.3390/mi14111982

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…The Primitive lattice structure stands out with a remarkable balance between high energy absorption and efficiency, particularly at 30% density, where it achieves the highest efficiency (0.72 ± 0.2) among all the tested designs. This suggests that the Primitive structure at lower densities could offer the best combination of energy dissipation and stress distribution under dynamic loading conditions, potentially minimizing implant failure risk, aligning with findings from recent research by Chen et al ( 2023) and Park et al (2023) [43,44].…”

Section: Effect Of Ti-6al-4v Lattice Structures On Mechanical Propertiessupporting

confidence: 84%

Effect of Lattice Structure on Mechanical Properties of Ti-6Al-4V-Ta Alloy for Improved Antibacterial Properties

Zhumabekova,

Toleubekova,

Pham

et al. 2024

JMMP

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This study investigates the effect of a tantalum addition and lattice structure design on the mechanical and antibacterial properties of Ti-6Al-4V alloys. TPMS lattice structures, such as Diamond, Gyroid, and Primitive, were generated by MSLattice 1.0 software and manufactured using laser powder bed fusion (LPBF). The results indicate that Gyroid and Primitive structures at a 40% density exhibit superior ultimate compressive strength, which closely emulates bone’s biomechanical properties. To be precise, adding 8% tantalum (Ta) significantly increases the material’s elastic modulus and energy absorption, enhancing the material’s suitability for dynamic load-bearing implants. Nevertheless, the Ta treatment reduces bacterial biofilm formation, especially on Gyroid surfaces, suggesting its potential for infection management. Overall, all findings provide critical insights into the development of advanced implant materials, contributing to the fields of additive manufacturing, materials science, and biomedical engineering and paving the way for improved patient outcomes in orthopedic applications.

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Section: Effect Of Ti-6al-4v Lattice Structures On Mechanical Propertiessupporting

confidence: 84%

Effect of Lattice Structure on Mechanical Properties of Ti-6Al-4V-Ta Alloy for Improved Antibacterial Properties

Zhumabekova,

Toleubekova,

Pham

et al. 2024

JMMP

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“…Titanium alloys have a high specific strength, exceptional biocompatibility, outstanding corrosion resistance, and an impressive performance at both high and low temperatures, thereby demonstrating considerable potential for applications in metallic microfabrication [1][2][3]. In the past decade, titanium alloys have been used increasingly in aerospace, biomedicine, and precision engineering, and a pressing necessity for advancing these high-end industries involves manufacturing critical microscale components such as microgrooves, microcavities, micropump impellers, and miniature medical implants [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Jet Electrochemical Micromilling of Ti-6Al-4V Using NaCl–Ethylene Glycol Electrolyte

Niu,

Huang,

Ming

et al. 2024

Micromachines

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Titanium alloys are widely used in aerospace and biomedicine because of their excellent mechanical characteristics, but these properties also make such alloys difficult to cut. Jet electrochemical micromilling (JEMM) is based on the principle of electrochemical anodic dissolution; it has some inherent advantages for the machining of titanium alloy microstructures. However, titanium oxidizes readily, forming an oxide film that impedes a uniform dissolution during electrochemical machining. Therefore, a high voltage and an aqueous NaCl electrolyte are usually used to break the oxide film, which can lead to severe stray corrosion. To overcome this problem, the present study investigated the JEMM of Ti-6Al-4V using a NaCl–ethylene glycol (NaCl-EG) electrolyte. Electrochemical testing showed that Ti-6Al-4V exhibits a better corrosion resistance in the NaCl-EG electrolyte compared to the aqueous NaCl electrolyte, thereby reducing stray corrosion. The localization and surface quality of the grooves were enhanced significantly when using JEMM with a NaCl-EG electrolyte. A multiple-pass strategy was adopted during JEMM to improve the aspect ratio, and the effects of the feed depth and number of passes on the multiple-pass machining performance were investigated. Ultimately, a square annular microstructure with a high geometric dimensional consistency and a smooth surface was obtained via JEMM with multiple passes using the optimal parameters.

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“…These schemes encompass structures such as regular tetrahedron, regular hexahedron, helix [8], imitation diamond [9], and annulus. The diamond structure, also known as the imitation diamond structure, exhibits significant plateau stress [10]. Regular tetrahedron and hexahedron structures are prevalent in various fields.…”

Section: Introductionmentioning

confidence: 99%

Investigating mechanical properties of 3D printed porous titanium scaffolds for bone tissue engineering

Yang,

Qin,

et al. 2024

Mater. Res. Express

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Objective:Three-dimensional (3D) printed porous titanium scaffolds serve as a bone tissue engineering technology that offers a promising solution for addressing bone defects. The scaffold's pore structure offers structural support and facilitates the proliferation of bone cells. Therefore, investigating the aperture and pore shape is of crucial for the development of 3D printed porous titanium scaffolds.Methods:Ti6Al4V scaffolds with the specified structure were fabricated using selective laser melting (SLM) technology. The scaffolds comprised fifteen cylindrical models measuring 20 mm in diameter and 20 mm in height. These models featured five scaffold shapes: imitation diamond-60°, imitation diamond-90°, imitation diamond-120°, regular tetrahedron and regular hexahedron. Each of these structural shapes was characterized by three different aperture sizes (400 μm, 600 μm and 800 μm). The porosity and mechanical properties of Ti6Al4V scaffolds were examined.Results:The measured porosity of Ti6Al4V scaffolds varied between 56.50% and 95.28%. The porosity increased with the size of the aperture. The mechanical properties tests revealed that, for identical apertures, the compressive strength and torsional strength were influenced by the configuration of the unit structure. Furthermore, the positive and lateral compressive strength as well as torsional strength of various unit structures exhibited distinct advantages and disadvantages. Within a uniform unit structure shape, the compressive strength and torsional strength were found to be correlated with the size of apertures, indicating that larger apertures result in decreased compressive and torsional strength.Conclusion:The configuration of the aperture and the shape of the pore were identified as significant factors that influenced the compressive strength. The compressive strength of Ti6Al4V scaffolds with various unit structure shapes exhibited both advantages and disadvantages when subjected to positive, lateral, and torsional forces. The enlarged aperture augmented the scaffold's porosity while diminishing its compressive and torsional strength.

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Enhanced Energy Absorption of Additive-Manufactured Ti-6Al-4V Parts via Hybrid Lattice Structures

Cited by 5 publications

References 26 publications

Effect of Lattice Structure on Mechanical Properties of Ti-6Al-4V-Ta Alloy for Improved Antibacterial Properties

Effect of Lattice Structure on Mechanical Properties of Ti-6Al-4V-Ta Alloy for Improved Antibacterial Properties

Jet Electrochemical Micromilling of Ti-6Al-4V Using NaCl–Ethylene Glycol Electrolyte

Investigating mechanical properties of 3D printed porous titanium scaffolds for bone tissue engineering

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