Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion
AlSi10Mg cubes were fabricated with the laser powder bed fusion (LPBF) process, using different exposure times and scan strategies to gain insight into the effect of energy density and part orientation on surface roughness. The results showed that, with increasing energy density, the five-face rough...
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doaj-706b81ae50b24f099d1a0ed977695fe92020-11-24T23:05:55ZengMDPI AGMetals2075-47012018-07-018752410.3390/met8070524met8070524Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed FusionBao-Qiang Li0Zhonghua Li1Peikang Bai2Bin Liu3Zezhou Kuai4School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Mechanical Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaAlSi10Mg cubes were fabricated with the laser powder bed fusion (LPBF) process, using different exposure times and scan strategies to gain insight into the effect of energy density and part orientation on surface roughness. The results showed that, with increasing energy density, the five-face roughness first decreased and then increased, whereas the top roughness increased slightly. Moreover, considerable differences in roughness appeared for the different faces. A good surface quality was obtained at 175 J/mm3 and 200 J/mm3 when the rotation start angle and rotation increment angle were set as 0 in meander scan mode. The roughness variation was caused by the scan direction, gas flow direction, and wiper movement direction. The scan strategies with rotation increments of 90° effectively narrowed the variation. These results support direct part orientation and placement and can guide users to further reduce roughness through process optimisation or simplification of post-processing procedures.http://www.mdpi.com/2075-4701/8/7/524selective laser meltingAlSi10Mgenergy densityparts orientationroughness difference |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bao-Qiang Li Zhonghua Li Peikang Bai Bin Liu Zezhou Kuai |
spellingShingle |
Bao-Qiang Li Zhonghua Li Peikang Bai Bin Liu Zezhou Kuai Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion Metals selective laser melting AlSi10Mg energy density parts orientation roughness difference |
author_facet |
Bao-Qiang Li Zhonghua Li Peikang Bai Bin Liu Zezhou Kuai |
author_sort |
Bao-Qiang Li |
title |
Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion |
title_short |
Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion |
title_full |
Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion |
title_fullStr |
Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion |
title_full_unstemmed |
Research on Surface Roughness of AlSi10Mg Parts Fabricated by Laser Powder Bed Fusion |
title_sort |
research on surface roughness of alsi10mg parts fabricated by laser powder bed fusion |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2018-07-01 |
description |
AlSi10Mg cubes were fabricated with the laser powder bed fusion (LPBF) process, using different exposure times and scan strategies to gain insight into the effect of energy density and part orientation on surface roughness. The results showed that, with increasing energy density, the five-face roughness first decreased and then increased, whereas the top roughness increased slightly. Moreover, considerable differences in roughness appeared for the different faces. A good surface quality was obtained at 175 J/mm3 and 200 J/mm3 when the rotation start angle and rotation increment angle were set as 0 in meander scan mode. The roughness variation was caused by the scan direction, gas flow direction, and wiper movement direction. The scan strategies with rotation increments of 90° effectively narrowed the variation. These results support direct part orientation and placement and can guide users to further reduce roughness through process optimisation or simplification of post-processing procedures. |
topic |
selective laser melting AlSi10Mg energy density parts orientation roughness difference |
url |
http://www.mdpi.com/2075-4701/8/7/524 |
work_keys_str_mv |
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1725624956052570112 |