Novel Composite Powders with Uniform TiB2 Nano-Particle Distribution for 3D Printing

Chen, Mengxing; Li, Xiao Peng; Ji, Gang; Wu, Yi; Chen, Zhe; Baekelant, Wouter; Vanmeensel, Kim; Wang, Haowei; Kruth, Jean‐Pierre

doi:10.3390/app7030250

Cited by 47 publications

(18 citation statements)

References 23 publications

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“…Since the feedstock of MMCs is not commercially available for AM processing [29], several techniques have been employed in recent years to prepare these powders. The mechanical routes such as regular mixing [30,31,32] and ball milling [33,34,35,36,37,38,39], and non-mechanical methods including gas atomization of a pre-alloyed system [40,41], agent-assisted deposition [42,43] and electrodeposition [44,45] are among these methods. Compared to the mechanical mixing routes, which have attracted a great deal of attention in recent years, the non-mechanical methods have been rarely adopted to prepare composite powder feedstocks for AM purposes.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Composite Powder Feedstock from Powder Bed Fusion Additive Manufacturing Perspective

2019

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This research aims at evaluating the characteristics of the 5 wt.% B4C/Ti-6Al-4V composite powder feedstock prepared by two different categories of mechanical mixing for powder bed fusion (PBF) additive manufacturing (AM) of metal matrix composites (MMCs). Microstructural features, particle size, size distribution, sphericity, conditioned bulk density and flow behavior of the developed powders were examined. The flowability of the regularly mixed powders was significantly lower than that of the Ti-6Al-4V powder. However, the flowability of the ball-milled systems was a significant function of the milling time. The decrease in the flowability of the 2 h ball-milled powder compared to the Ti-6Al-4V powder was attributed to the mechanical interlocking and the entangling caused by the B4C particles fully decorating the Ti-6Al-4V particles. Although the flattened/irregular shape of powder particles in the 6 h milled system acted to reduce the flowability, the overall surface area reduction led to higher flowability than that for the 2 h milling case. Regardless of the mixing method, incorporation of B4C particles into the system decreased the apparent density of the Ti-6Al-4V powder. The composite powder obtained by 2 h of ball milling was suggested as the best possible condition, meeting the requirements of PBF–AM processes.

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Section: Introductionmentioning

confidence: 99%

Characterization of Composite Powder Feedstock from Powder Bed Fusion Additive Manufacturing Perspective

2019

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“…[6][7][8] SLM, characterized by its layer-by-layer fabrication process, is a powder-based AM process allowing greatly increased design freedom and part complexity. [12] Fully dense and crack-free aluminum samples were produced through SLM of this powder, resulting in a simultaneous enhancement of both tensile strength and ductility. Recently, SLM of aluminum alloys, for example, Al12Si and AlSi10Mg, have been extensively investigated regarding the processing-microstructure-properties relationship and several possible mechanisms for the formation of complex and fine cellular-like microstructure in the SLM fabricated aluminum alloys have been proposed.…”

Section: Introductionmentioning

confidence: 99%

On the Breakdown of SiC during the Selective Laser Melting of Aluminum Matrix Composites

Astfalck

Kelly

et al. 2017

Adv Eng Mater

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Selective laser melting (SLM) is used to produce a SiC reinforced aluminum metal matrix composite (AMMC, Al-12Si plus 10 vol% SiC) with laser energy densities ( E p ) between 20 and 80 J mm À3 . Microstructural analysis shows that at lower energies, SiC is present in the Al-12Si matrix; however, at higher energies there is a distinct lack of SiC particles and the extensive formation of Al 4 C 3 needles and primary Si particles. XRD analysis confirms a decrease in the volume of SiC and an increase in the amount of Al 4 C 3 and primary Si with increasing E p . This indicates that a reaction occurs between the Al and SiC during SLM. The underlying mechanism is attributed to the selective absorption of laser energy into the SiC particles, causing regions of extremely high temperatures. The formation of the reaction products cause errors in the theoretical density calculations. Therefore, X-ray micro tomography (XMT) is used to independently measure the relative density of the samples with a peak relative density %97.4%, which is much higher than that (relative density %93%) measured using the Archimedes method.

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“…150 For production of MMCs, the selective laser melting process uses for example pressure-swirl-gas-atomized powders (the reinforcing nanomaterial is integrated within the matrix powder), gas atomized powders (of matrix and reinforcing material resulting in a composite powder), mechanically mixed powders (containing a mixture of matrix and dispersed powder), chemical vapor deposition treated powders (the matrix powder is coated with another material), and multi-material deposition (powders are mixed in situ by the machine feeder system). [151][152][153][154][155] Post processing operations which are normally used for forming and shaping operations were found in over 12% of the reviewed journal articles, on which 8.4% were accounted for Hot Extrusion alone. The post processing techniques shown in Figure 3 were found in the reviewed journal articles.…”

Section: Progress In Mmcs Matrix and Reinforcing Materialsmentioning

confidence: 99%

Advanced production routes for metal matrix composites

Mussatto

Ahad

Mousavian

et al. 2020

Engineering Reports

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The use of metal matrix composites (MMCs) in a variety of products is significantly increasing with time due to the fact that their properties can be tailored and designed to suit specific applications. However, the future usage of MMC products is very much dependent on their beneficial aspects and hence it is critical to ensure in a robust repeatable manner the superior physical property advantages compared to conventional unreinforced monolithic metal counterparts. Although numerous routes are available for production of MMC products, each of them has their own advantages and disadvantages. This article provides an overview of advanced production routes for MMCs. The discussion also highlights challenges and presents a future prospectus for MMCs. Powder metallurgy and casting routes are still extensively used for production of MMCs. Aluminum alloys are today the most commonly used matrix materials in MMC products.Carbides (eg, SiC, TiC, and B 4 C), carbon allotropes (eg, CNTs and graphene), and alumina (Al 2 O 3) are currently the most used reinforcement materials. Nevertheless, the use of nano and of hybrid reinforcements are seeing increased usage in niche applications. Additive manufacturing (AM) is discussed as a novel production route for MMC products. This process represents a promising method for the production of MMC products.

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Novel Composite Powders with Uniform TiB2 Nano-Particle Distribution for 3D Printing

Cited by 47 publications

References 23 publications

Characterization of Composite Powder Feedstock from Powder Bed Fusion Additive Manufacturing Perspective

Characterization of Composite Powder Feedstock from Powder Bed Fusion Additive Manufacturing Perspective

On the Breakdown of SiC during the Selective Laser Melting of Aluminum Matrix Composites

Advanced production routes for metal matrix composites

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