Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength
The effects of laser scan direction, part placement and inert gas flow velocity on the tensile strength of aluminium alloy, AlSi10Mg parts manufactured using Selective Laser Melting (SLM), were studied. The scan direction, either in the same or opposite direction to the gas flow was the primary fact...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/143115 |
| _version_ | 1826114919814135808 |
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| author | Ahmad Bin Anwar Pham, Quang-Cuong |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ahmad Bin Anwar Pham, Quang-Cuong |
| author_sort | Ahmad Bin Anwar |
| collection | NTU |
| description | The effects of laser scan direction, part placement and inert gas flow velocity on the tensile strength of aluminium alloy, AlSi10Mg parts manufactured using Selective Laser Melting (SLM), were studied. The scan direction, either in the same or opposite direction to the gas flow was the primary factor of interest due to the possible laser-spattered powder-gas interactions leading to energy loss while scanning the powder bed. The effects of flow velocity on tensile strength had shown to be more significant than part placement. It was found that scanning against the gas flow resulted in better part quality, as quantified by a higher Ultimate Tensile Strength (UTS). This relationship was interpreted and discussed based on other observations, such as the quantity of accumulated spattered powder near the outlet, images recorded using high-speed cameras, SEM-EDS tests, etc. Hence, the results suggest a concrete modification to existing scanning strategies with respect to the inert gas flow in SLM to improve part quality. |
| first_indexed | 2024-10-01T03:47:05Z |
| format | Journal Article |
| id | ntu-10356/143115 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:47:05Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1431152020-09-26T22:06:06Z Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength Ahmad Bin Anwar Pham, Quang-Cuong School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering SLM AlSi10Mg The effects of laser scan direction, part placement and inert gas flow velocity on the tensile strength of aluminium alloy, AlSi10Mg parts manufactured using Selective Laser Melting (SLM), were studied. The scan direction, either in the same or opposite direction to the gas flow was the primary factor of interest due to the possible laser-spattered powder-gas interactions leading to energy loss while scanning the powder bed. The effects of flow velocity on tensile strength had shown to be more significant than part placement. It was found that scanning against the gas flow resulted in better part quality, as quantified by a higher Ultimate Tensile Strength (UTS). This relationship was interpreted and discussed based on other observations, such as the quantity of accumulated spattered powder near the outlet, images recorded using high-speed cameras, SEM-EDS tests, etc. Hence, the results suggest a concrete modification to existing scanning strategies with respect to the inert gas flow in SLM to improve part quality. Accepted version 2020-08-04T02:26:00Z 2020-08-04T02:26:00Z 2016 Journal Article Ahmad Bin Anwar, & Pham, Q.-C. (2017). Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength. Journal of Materials Processing Technology, 240, 388-396. doi:10.1016/j.jmatprotec.2016.10.015 0924-0136 https://hdl.handle.net/10356/143115 10.1016/j.jmatprotec.2016.10.015 2-s2.0-84992520706 240 388 396 en Journal of Materials Processing Technology © 2016 Elsevier B.V. All rights reserved. This paper was published in Journal of Materials Processing Technology and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Mechanical engineering SLM AlSi10Mg Ahmad Bin Anwar Pham, Quang-Cuong Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title | Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title_full | Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title_fullStr | Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title_full_unstemmed | Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title_short | Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength |
| title_sort | selective laser melting of alsi10mg effects of scan direction part placement and inert gas flow velocity on tensile strength |
| topic | Engineering::Mechanical engineering SLM AlSi10Mg |
| url | https://hdl.handle.net/10356/143115 |
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