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Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys
Gamma-TiAl (γ-TiAl) alloys can be used in high-end products relevant to the aerospace, defense, biomedical, and marine industries. Fabricating objects made of γ-TiAl alloys needs an additive manufacturing process called Electron Beam Melting (EBM) or other similar processes because these alloys are...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961858/ https://www.ncbi.nlm.nih.gov/pubmed/33808000 http://dx.doi.org/10.3390/ma14051246 |
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author | Chowdhury, M. A. K. Ullah, AMM Sharif Teti, Roberto |
author_facet | Chowdhury, M. A. K. Ullah, AMM Sharif Teti, Roberto |
author_sort | Chowdhury, M. A. K. |
collection | PubMed |
description | Gamma-TiAl (γ-TiAl) alloys can be used in high-end products relevant to the aerospace, defense, biomedical, and marine industries. Fabricating objects made of γ-TiAl alloys needs an additive manufacturing process called Electron Beam Melting (EBM) or other similar processes because these alloys are difficult-to-cut materials. An object fabricated by EBM exhibits poor surface finish and must undergo postprocessing. In this study, cylindrical specimens were fabricated by EBM and post-processed by turning at different cutting conditions (cutting speed, depth of cut, feed rate, insert radius, and coolant flowrate). The EBM conditions were as follows: average powder size 110 μm, acceleration voltage 60 kV, beam current 10 mA, beam scanning speed 2200 mm/s, and beam focus offset 0.20 mm. The surface roughness and cutting force were recorded for each set of cutting conditions. The values of the cutting conditions were set by the L36 Design of Experiment approach. The effects of the cutting conditions on surface roughness and cutting force are elucidated by constructing the possibility distributions (triangular fuzzy numbers) from the experimental data. Finally, the optimal cutting conditions to improve the surface finish of specimens made of γ-TiAl alloys are determined using the possibility distributions. Thus, this study’s outcomes can be used to develop intelligent systems for optimizing additive manufacturing processes. |
format | Online Article Text |
id | pubmed-7961858 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79618582021-03-17 Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys Chowdhury, M. A. K. Ullah, AMM Sharif Teti, Roberto Materials (Basel) Article Gamma-TiAl (γ-TiAl) alloys can be used in high-end products relevant to the aerospace, defense, biomedical, and marine industries. Fabricating objects made of γ-TiAl alloys needs an additive manufacturing process called Electron Beam Melting (EBM) or other similar processes because these alloys are difficult-to-cut materials. An object fabricated by EBM exhibits poor surface finish and must undergo postprocessing. In this study, cylindrical specimens were fabricated by EBM and post-processed by turning at different cutting conditions (cutting speed, depth of cut, feed rate, insert radius, and coolant flowrate). The EBM conditions were as follows: average powder size 110 μm, acceleration voltage 60 kV, beam current 10 mA, beam scanning speed 2200 mm/s, and beam focus offset 0.20 mm. The surface roughness and cutting force were recorded for each set of cutting conditions. The values of the cutting conditions were set by the L36 Design of Experiment approach. The effects of the cutting conditions on surface roughness and cutting force are elucidated by constructing the possibility distributions (triangular fuzzy numbers) from the experimental data. Finally, the optimal cutting conditions to improve the surface finish of specimens made of γ-TiAl alloys are determined using the possibility distributions. Thus, this study’s outcomes can be used to develop intelligent systems for optimizing additive manufacturing processes. MDPI 2021-03-05 /pmc/articles/PMC7961858/ /pubmed/33808000 http://dx.doi.org/10.3390/ma14051246 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chowdhury, M. A. K. Ullah, AMM Sharif Teti, Roberto Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title | Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title_full | Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title_fullStr | Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title_full_unstemmed | Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title_short | Optimizing 3D Printed Metallic Object’s Postprocessing: A Case of Gamma-TiAl Alloys |
title_sort | optimizing 3d printed metallic object’s postprocessing: a case of gamma-tial alloys |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961858/ https://www.ncbi.nlm.nih.gov/pubmed/33808000 http://dx.doi.org/10.3390/ma14051246 |
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