Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique
In Additive Manufacturing (AM) using the Laser Powder Bed Fusion (L-PBF) technique, spherical powders are the most commonly preferred for direct sintering. However, composites such as cemented carbides and heavy alloys often exhibit irregular shapes. Due to the requirement for extremely fine grain...
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| Format: | Article |
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Universidade Federal de Viçosa (UFV)
2024-12-01
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| Series: | The Journal of Engineering and Exact Sciences |
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| Online Access: | https://periodicos.ufv.br/jcec/article/view/20994 |
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| author | Fábio Miranda Rodrigo Condotta Nathalia Marina Gonçalves Pereira Marcelo Otávio dos Santos Daniel Rodrigues Suzilene Real Janasi Fernando dos Santos Ortega Gilmar Ferreira Batalha |
| author_facet | Fábio Miranda Rodrigo Condotta Nathalia Marina Gonçalves Pereira Marcelo Otávio dos Santos Daniel Rodrigues Suzilene Real Janasi Fernando dos Santos Ortega Gilmar Ferreira Batalha |
| author_sort | Fábio Miranda |
| collection | DOAJ |
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In Additive Manufacturing (AM) using the Laser Powder Bed Fusion (L-PBF) technique, spherical powders are the most commonly preferred for direct sintering. However, composites such as cemented carbides and heavy alloys often exhibit irregular shapes. Due to the requirement for extremely fine grain size, the cohesive behavior of the particle bed becomes significant, influencing its compressibility and porosity. These physical properties result in powders with coarse textures, which lead to low fluidity and interruptions in material flow within the ducts. This study evaluates the flowability of WC and W refractory materials combined with Co and Ni. Key interparticle properties, including real and bulk density, bulk compressibility and porosity, and granular shear, were analyzed to understand their influence on the deposition layer behavior in the powder bed. These parameters are crucial for understanding the micro-behavior of granular materials and correlating it with their macro-behavior. The rheological aspects of these composite powders are discussed, aiming to establish correlations between the manufacturing process and the resulting properties of their mixtures.
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| format | Article |
| id | doaj-art-e7aec9966f10415d8a83f3af2854bf10 |
| institution | Kabale University |
| issn | 2527-1075 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Universidade Federal de Viçosa (UFV) |
| record_format | Article |
| series | The Journal of Engineering and Exact Sciences |
| spelling | doaj-art-e7aec9966f10415d8a83f3af2854bf102025-02-02T19:53:08ZengUniversidade Federal de Viçosa (UFV)The Journal of Engineering and Exact Sciences2527-10752024-12-0110910.18540/jcecvl10iss9pp20994Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion techniqueFábio Miranda0Rodrigo Condotta1Nathalia Marina Gonçalves Pereira2Marcelo Otávio dos Santos3Daniel Rodrigues4Suzilene Real Janasi5Fernando dos Santos Ortega6Gilmar Ferreira Batalha7Escola Politécnica USP & BRATS Indústria e Com. de Produtos Metálicos Especiais Ltda, BrazilCentro Universitário FEI, BrazilCentro Universitário FEI, BrasilEscola Politécnica USP & Instituo Mauá de Tecnologia, BrazilBRATS Indústria e Comércio de Produtos Metálicos Especiais Ltda, BrazilBRATS Indústria e Comércio de Produtos Metálicos Especiais Ltda, BrazilUniv. do Vale do Paraíba & BRATS Ind. e Com. de Produtos Metálicos Especiais Ltda, BrazilEscola Politécnica USP & BRATS, Brazil In Additive Manufacturing (AM) using the Laser Powder Bed Fusion (L-PBF) technique, spherical powders are the most commonly preferred for direct sintering. However, composites such as cemented carbides and heavy alloys often exhibit irregular shapes. Due to the requirement for extremely fine grain size, the cohesive behavior of the particle bed becomes significant, influencing its compressibility and porosity. These physical properties result in powders with coarse textures, which lead to low fluidity and interruptions in material flow within the ducts. This study evaluates the flowability of WC and W refractory materials combined with Co and Ni. Key interparticle properties, including real and bulk density, bulk compressibility and porosity, and granular shear, were analyzed to understand their influence on the deposition layer behavior in the powder bed. These parameters are crucial for understanding the micro-behavior of granular materials and correlating it with their macro-behavior. The rheological aspects of these composite powders are discussed, aiming to establish correlations between the manufacturing process and the resulting properties of their mixtures. https://periodicos.ufv.br/jcec/article/view/20994Rheological behavior of powder composites. Flowability of heavy alloys. Properties and applications of powder bed fusion. Behavior of cermets in additive manufacturing. |
| spellingShingle | Fábio Miranda Rodrigo Condotta Nathalia Marina Gonçalves Pereira Marcelo Otávio dos Santos Daniel Rodrigues Suzilene Real Janasi Fernando dos Santos Ortega Gilmar Ferreira Batalha Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique The Journal of Engineering and Exact Sciences Rheological behavior of powder composites. Flowability of heavy alloys. Properties and applications of powder bed fusion. Behavior of cermets in additive manufacturing. |
| title | Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique |
| title_full | Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique |
| title_fullStr | Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique |
| title_full_unstemmed | Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique |
| title_short | Rheological analysis of cemented carbides and Tungsten powders for additive manufacture via laser powder bed fusion technique |
| title_sort | rheological analysis of cemented carbides and tungsten powders for additive manufacture via laser powder bed fusion technique |
| topic | Rheological behavior of powder composites. Flowability of heavy alloys. Properties and applications of powder bed fusion. Behavior of cermets in additive manufacturing. |
| url | https://periodicos.ufv.br/jcec/article/view/20994 |
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