Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143115
Title: Selective laser melting of AlSi10Mg : effects of scan direction, part placement and inert gas flow velocity on tensile strength
Authors: Ahmad Bin Anwar
Pham, Quang-Cuong
Keywords: Engineering::Mechanical engineering
Issue Date: 2016
Source: 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
Journal: Journal of Materials Processing Technology
Abstract: 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.
URI: https://hdl.handle.net/10356/143115
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2016.10.015
Rights: © 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SC3DP Journal Articles

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