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...

Full description

Saved in:
Bibliographic Details
Main Authors: Ahmad Bin Anwar, Pham, Quang-Cuong
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
Subjects:
SLM
Online Access:https://hdl.handle.net/10356/143115
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-143115
record_format dspace
spelling sg-ntu-dr.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
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Mechanical engineering
SLM
AlSi10Mg
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
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.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Ahmad Bin Anwar
Pham, Quang-Cuong
format Article
author Ahmad Bin Anwar
Pham, Quang-Cuong
author_sort Ahmad Bin Anwar
title 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_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_sort selective laser melting of alsi10mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength
publishDate 2020
url https://hdl.handle.net/10356/143115
_version_ 1681056891834204160