Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting
The improvement of the density with functional microstructure is still a challenge in the Selective Laser Melting process considering the laser processing parameters. In this study, the pore formation mechanisms and microstructural changes caused by the effects of laser power and track overlap durin...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-06-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379720308044 |
| _version_ | 1818291789034946560 |
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| author | Snehashis Pal Nenad Gubeljak Radovan Hudák Gorazd Lojen Viktória Rajťúková Tomaž Brajlih Igor Drstvenšek |
| author_facet | Snehashis Pal Nenad Gubeljak Radovan Hudák Gorazd Lojen Viktória Rajťúková Tomaž Brajlih Igor Drstvenšek |
| author_sort | Snehashis Pal |
| collection | DOAJ |
| description | The improvement of the density with functional microstructure is still a challenge in the Selective Laser Melting process considering the laser processing parameters. In this study, the pore formation mechanisms and microstructural changes caused by the effects of laser power and track overlap during the manufacturing process in selective laser melting were examined. Laser power played a crucial role in the geometry and quantity of keyhole pore formation and thus in improving density and quality. In contrast, a slightly higher track overlap led to a significant reduction in porosity, resulting in the production of fully dense samples of a Ti-6Al-4V alloy. The gradual variations in the solid-state phase transformation architecture occurred with variations in laser power and track overlap due to the use of different thermal mechanisms. The associated scanning speeds also significantly affected the microstructural architectures in some states. The melt pool dynamics and thermal properties that influenced the metallurgical properties of the samples are analyzed and interpreted. The analysis of the presented consequences can help the engineers to produce high density products together with functionally graded materials. |
| first_indexed | 2024-12-13T02:49:38Z |
| format | Article |
| id | doaj.art-ea18ee8b7c4b44e0b059b688d0730d0a |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-13T02:49:38Z |
| publishDate | 2020-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-ea18ee8b7c4b44e0b059b688d0730d0a2022-12-22T00:02:06ZengElsevierResults in Physics2211-37972020-06-0117103186Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser meltingSnehashis Pal0Nenad Gubeljak1Radovan Hudák2Gorazd Lojen3Viktória Rajťúková4Tomaž Brajlih5Igor Drstvenšek6Faculty of Mechanical Engineering, University of Maribor, Maribor, Slovenia; Corresponding author at: Smetanova ulica 17, 2000 Maribor, Slovenia.Faculty of Mechanical Engineering, University of Maribor, Maribor, SloveniaDepartment of Biomedical Engineering and Measurement, Technical University of Kosice, Kosice, SlovakiaFaculty of Mechanical Engineering, University of Maribor, Maribor, SloveniaDepartment of Biomedical Engineering and Measurement, Technical University of Kosice, Kosice, SlovakiaFaculty of Mechanical Engineering, University of Maribor, Maribor, SloveniaFaculty of Mechanical Engineering, University of Maribor, Maribor, SloveniaThe improvement of the density with functional microstructure is still a challenge in the Selective Laser Melting process considering the laser processing parameters. In this study, the pore formation mechanisms and microstructural changes caused by the effects of laser power and track overlap during the manufacturing process in selective laser melting were examined. Laser power played a crucial role in the geometry and quantity of keyhole pore formation and thus in improving density and quality. In contrast, a slightly higher track overlap led to a significant reduction in porosity, resulting in the production of fully dense samples of a Ti-6Al-4V alloy. The gradual variations in the solid-state phase transformation architecture occurred with variations in laser power and track overlap due to the use of different thermal mechanisms. The associated scanning speeds also significantly affected the microstructural architectures in some states. The melt pool dynamics and thermal properties that influenced the metallurgical properties of the samples are analyzed and interpreted. The analysis of the presented consequences can help the engineers to produce high density products together with functionally graded materials.http://www.sciencedirect.com/science/article/pii/S2211379720308044DensityPore formationMicrostructureLaser processing parametersTi-6Al-4V alloySelective laser melting |
| spellingShingle | Snehashis Pal Nenad Gubeljak Radovan Hudák Gorazd Lojen Viktória Rajťúková Tomaž Brajlih Igor Drstvenšek Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting Results in Physics Density Pore formation Microstructure Laser processing parameters Ti-6Al-4V alloy Selective laser melting |
| title | Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting |
| title_full | Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting |
| title_fullStr | Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting |
| title_full_unstemmed | Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting |
| title_short | Evolution of the metallurgical properties of Ti-6Al-4V, produced with different laser processing parameters, at constant energy density in selective laser melting |
| title_sort | evolution of the metallurgical properties of ti 6al 4v produced with different laser processing parameters at constant energy density in selective laser melting |
| topic | Density Pore formation Microstructure Laser processing parameters Ti-6Al-4V alloy Selective laser melting |
| url | http://www.sciencedirect.com/science/article/pii/S2211379720308044 |
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