Laser Powder Bed Fusion of Chromium Bronze Using Recycled Powder

Pelevin, Ivan A.; Burmistrov, Maxim A.; Ozherelkov, Dmitriy Yu.; Shinkaryov, Alexander S.; Chernyshikhin, Stanislav V.; Gromov, Alexander A.; Nalivaiko, Anton Yu.

doi:10.3390/ma14133644

Cited by 4 publications

(3 citation statements)

References 37 publications

(51 reference statements)

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“…In various works devoted to LPBF technology, it has been shown that the well-chosen initial powder material is the basis for the successful consolidation with minimum defects [ 31 , 32 , 33 , 34 , 35 ]. The most important properties of the powder are particle morphology, chemical composition, and microstructure [ 31 ].…”

Section: Resultsmentioning

confidence: 99%

The Study on Resolution Factors of LPBF Technology for Manufacturing Superelastic NiTi Endodontic Files

et al. 2022

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Laser Powder Bed Fusion (LPBF) technology is a new trend in manufacturing complex geometric structures from metals. This technology allows producing topologically optimized parts for aerospace, medical and industrial sectors where a high performance-to-weight ratio is required. Commonly the feature size for such applications is higher than 300–400 microns. However, for several possible applications of LPBF technology, for example, microfluidic devices, stents for coronary vessels, porous filters, dentistry, etc., a significant increase in the resolution is required. This work is aimed to study the resolution factors of LPBF technology for the manufacturing of superelastic instruments for endodontic treatment, namely Self-Adjusting Files (SAF). Samples of thin walls with different incline angles and SAF samples were manufactured from Nickel-Titanium pre-alloyed powder with a 15–45 μm fraction. The printing procedure was done using an LPBF set-up equipped with a conventional ytterbium fiber laser with a nominal laser spot diameter of 55 microns. The results reveal physical, apparatus, and software factors limiting the resolution of the LPBF technology. Additionally, XRD and DSC tests were done to study the effect of single track based scanning mode manufacturing on the phase composition and phase transformation temperatures. Found combination of optimal process parameters including laser power of 100 W, scanning speed of 850 mm/s, and layer thickness of 20 μm was suitable for manufacturing SAF files with the required resolution. The results will be helpful for the production of NiTi micro objects based on periodic structures both by the LPBF and μLPBF methods.

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Section: Resultsmentioning

confidence: 99%

The Study on Resolution Factors of LPBF Technology for Manufacturing Superelastic NiTi Endodontic Files

et al. 2022

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“…Apart from the several common alloys mentioned above, several studies on powder reusability of other alloy systems, including Co-Cr-based alloys [200,260,261], Cu alloys [262], and high entropy alloys [263], have also been conducted, which are described in turn in the following.…”

Section: Powder Reusability Of Other Alloy Systemsmentioning

confidence: 99%

“…Though several studies have been conducted for L-PBF Cu alloy [162], there is limited research on powder reusability of Cu alloy powders. To the best of our knowledge, only one study [262] focuses on the reusability of chromium bronze. It was found that the chromium bronze printed with reused powders exhibited a YS of (136.8 ± 8.7) MPa, a UTS of (187.4 ± 10.1) MPa, and an elongation of (15.5 ± 2.3)%.…”

Section: Powder Reusability Of Other Alloy Systemsmentioning

confidence: 99%

Characterization, preparation, and reuse of metallic powders for laser powder bed fusion: a review

Sun,

Chen,

Liu

et al. 2023

Int. J. Extrem. Manuf.

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Laser powder bed fusion (L-PBF) has attracted significant attention since its inception, providing unprecedented advantages to fabricate metallic components with complex geometry. The quality and performance of as-printed alloys is an intricate function consisting of numerous factors linking the feedstock powders, manufacturing, and post-treatment. As the starting materials, powders play a critical role in influencing the printing consistency, total fabrication cost, and mechanical properties. In consideration of its importance for L-PBF, the present review aims to review the recent progress on metallic powders for L-PBF focusing on powder characterization, powder fabrication, and powder reuse. The methods of powder characterization and fabrication were presented in the beginning by analyzing the principles and corresponding advantages and limitations. Subsequently, the effect of powder reuse on the powder characteristics and mechanical performance of L-PBF parts is analyzed focusing on steels, nickel-based superalloys, Ti and Ti alloys, and Al alloys. The evolution trend of powders and as-printed parts varies for different alloy systems based on the existing studies, which makes the proposal of a unified reuse protocol infeasible. Finally, perspectives are presented to cater to the increasing applications of AM technologies for future investigations. The present state-of-the-art work can pave the way for the broad industrial applications of L-PBF by enhancing printing consistency and reducing the total cost from the perspective of powders.

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Laser Polishing of Nickel-Titanium Shape Memory Alloy Produced via Laser Powder Bed Fusion

et al. 2023

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Laser Powder Bed Fusion of Chromium Bronze Using Recycled Powder

Cited by 4 publications

References 37 publications

The Study on Resolution Factors of LPBF Technology for Manufacturing Superelastic NiTi Endodontic Files

The Study on Resolution Factors of LPBF Technology for Manufacturing Superelastic NiTi Endodontic Files

Characterization, preparation, and reuse of metallic powders for laser powder bed fusion: a review

Laser Polishing of Nickel-Titanium Shape Memory Alloy Produced via Laser Powder Bed Fusion

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