Fabrication of porous pure titanium via selective laser melting under low-energy-density process conditions

Kim, Won Rae; Bang, Gyung Bae; Kwon, Ohyung; Jung, Kyung‐Hwan; Park, Hyung-Ki; Kim, Gun-Hee; Jeong, Hyo‐Tae

doi:10.1016/j.matdes.2020.109035

Cited by 14 publications

(5 citation statements)

References 22 publications

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“…The detailed printing process was as follows. First, a layer of microporous structure with a certain degree of "particle-to-particle" overlapping was formed after specific laser scanning, where the metal particles underwent rapid melting and solidification as a result of the superfast heating and cooling of the laser with a high laser-induced heating temperature of up to 10 5 K and a rapid cooling rate of up to 10 6-7 K•s −1 [33]. Next, these layered porous structures were stacked layer by layer to form a bulk porous metallic material with the desired micropores.…”

Section: Fabrication Of Particle-stacking Microporous 316lmentioning

confidence: 99%

Fabrication of Particle-Stacking Microporous Metal Using Laser Powder Bed Fusion

Qiu,

Xu,

Chen

et al. 2024

Coatings

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Laser powder bed fusion can fabricate porous structures through lattices, but the preparation of micropores (<50 μm) with a specific pore distribution remains a challenge. Microporous 316L was fabricated by controlling the melting and solidification behavior of the particles using laser energy. The laser energy density was not a determining factor for the porosity and micropore formation, except for the single-factor condition. The high-speed scanning mode required a higher laser power to disorder the pore distribution, whereas low-speed scanning with a low laser impact on the stacking particles formed organized pores. The hatch distance significantly affected the pore distribution and pore size. The pore distribution in the XY plane was organized and homogenous, with channeled pores mainly interconnected along the laser scanning tracks, whereas in the Z direction, it showed a relatively disordered distribution, mainly linked along the layered direction. The microporous 316L displayed a mean pore size and median pore size of 10–50 μm with a high-percentage size distribution in 1–10 μm, a controllable porosity of 17.06%–45.33% and a good yield strength of 79.44–318.42 MPa, superior to the lattice porous 316L with 250.00 MPa at similar porosity.

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Section: Fabrication Of Particle-stacking Microporous 316lmentioning

confidence: 99%

Fabrication of Particle-Stacking Microporous Metal Using Laser Powder Bed Fusion

Qiu,

Xu,

Chen

et al. 2024

Coatings

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“…It has acquired widespread acceptance among manufacturers and academics over the last two decades due to its enormous potential for developing and constructing sophisticated structures that would not be possible using traditional procedures [2]. A current trend in the design of AM components is to replace solid volumes with lightweight cellular structures for a variety of reasons, including increased energy e ciency and material use [1,3]. A broad range of materials, from advanced engineering polymers to metals and ceramics, may be utilized in AM, which is categorized into seven process categories by the ASTM ISO 52900 nomenclature standard [4].…”

Section: Introductionmentioning

confidence: 99%

The effect of build orientation on the mechanical properties of a variety of polymer AM-created triply periodic minimal surface structures

Temiz

2024

J Braz. Soc. Mech. Sci. Eng.

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This research aimed to determine how different pattern types (TPMS) and build orientations affected the mechanical properties of test specimens made with masked stereolithography (MSLA) and a commercially available gray resin. Moreover, the study aimed to determine the best TPMS pattern type and build orientation to enhance both UTS and elongation at break. For the purpose of experimental assessment of their tensile qualities, samples of the Gyroid lattice, Schwarz Primitive lattice, and Schwarz Diamond lattice structures were 3D printed using SLA technology. The results of producing on the on edge, upright and at orientations of a building were compared. The results showed that across all three building orientations, the D-shaped component produced the highest UTS and the P-shaped component produced the largest elongation. It's apparent that the upright position produced the smallest UTS. When comparing the UTS and elongation at break between the at and on-edge constructed orientations, it is clear that the former is lower. This article compares the mechanical properties of several TPMS cellular structures with the same density and cell size, all of which are manufactured from the same polymeric base material. SLA 3D printed samples of Gyroid lattice, Schwarz Primitive lattice, and Schwarz Diamond lattice structures were created for experimental characterization of their tensile properties. Manufacturing was conducted in three

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“…AM techniques provide more design freedom compared to conventional manufacturing methods, providing the ability to create complex lightweight parts with increased functionality. A new trend in the design of AM components is to replace solid volumes with lightweight cellular structures for several advantages such as improving energy consumption efficiency and improving material utilization [10][11][12][13][14][15][16]. Gibson and Ashby [17] showed that the mechanical performance of cellular structures is strongly related to their volume fraction.…”

Section: Introductionmentioning

confidence: 99%

Design, fabrication, and evaluation of functionally graded triply periodic minimal surface structures fabricated by 3D printing

Hassan

Enab

Fouda

et al. 2023

J Braz. Soc. Mech. Sci. Eng.

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Cellular structures are a favorite selection for the design of lightweight components and energy absorption applications due to several advantages such as their customizable stiffness and strength. In this investigation, functionally graded (FG) triply periodic minimal surfaces, Schoen-IWP (SIWP), and Schwarz primitive (SPrim) cellular structures were fabricated by masked stereolithography (MSLA) technique using ABS-like gray resin. The sample morphology, deformation behavior, mechanical characteristics, and energy absorption of graded and uniform structures were studied using experimental compression tests. The FG sample structures exhibited layer-by-layer collapse delaying shear failure. On the other hand, uniform samples showed complete diagonal shear failure. The total energy absorption to the densification point was 0.52 MJ/m3 and 0.58 MJ/m3 for graded and uniform SIWP, respectively. Additionally, the absorbed energy of the graded SPrim structure was 0.59 MJ/m3 while the uniform one absorbed 0.27 MJ/m3. The investigations showed that the graded SPrim absorbed more energy with high densification strain during the compression test.

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Fabrication of porous pure titanium via selective laser melting under low-energy-density process conditions

Cited by 14 publications

References 22 publications

Fabrication of Particle-Stacking Microporous Metal Using Laser Powder Bed Fusion

Fabrication of Particle-Stacking Microporous Metal Using Laser Powder Bed Fusion

The effect of build orientation on the mechanical properties of a variety of polymer AM-created triply periodic minimal surface structures

Design, fabrication, and evaluation of functionally graded triply periodic minimal surface structures fabricated by 3D printing

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