Final published version
Licence: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Effect of melting modes on microstructure and tribological properties of selective laser melted AlSi10Mg alloy
AU - Wu, H.
AU - Ren, Y.
AU - Ren, J.
AU - Cai, A.
AU - Song, M.
AU - Liu, Y.
AU - Wu, X.
AU - Li, Q.
AU - Huang, W.
AU - Wang, X.
AU - Baker, I.
PY - 2020/12/8
Y1 - 2020/12/8
N2 - This paper focuses on the effect of melting modes on microstructural evolution and tribological properties of AlSi10Mg alloy fabricated by selective laser melting (SLM). The results showed that the microstructures of SLM AlSi10Mg consisted of primary α-Al surrounded by cellular Si networks (∼500 nm) when fabricated in conduction mode, but has a finer cellular-like Si phase (∼200 nm) when fabricated in keyhole mode. The strong convection caused by the melt reflow and Marangoni convection under keyhole mode also resulted in deposition of nano-scale Si particles at the bottom of the molten pool. The SLM AlSi10Mg fabricated in keyhole mode exhibited better wear resistance than that fabricated in conduction mode. Compared to traditional as-cast specimens, both SLM specimens showed better wear resistance due to the unique cellular-like networks. The SLM technique offers a new approach for material processing that can be used to refine microstructures for improved tribological properties. © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
AB - This paper focuses on the effect of melting modes on microstructural evolution and tribological properties of AlSi10Mg alloy fabricated by selective laser melting (SLM). The results showed that the microstructures of SLM AlSi10Mg consisted of primary α-Al surrounded by cellular Si networks (∼500 nm) when fabricated in conduction mode, but has a finer cellular-like Si phase (∼200 nm) when fabricated in keyhole mode. The strong convection caused by the melt reflow and Marangoni convection under keyhole mode also resulted in deposition of nano-scale Si particles at the bottom of the molten pool. The SLM AlSi10Mg fabricated in keyhole mode exhibited better wear resistance than that fabricated in conduction mode. Compared to traditional as-cast specimens, both SLM specimens showed better wear resistance due to the unique cellular-like networks. The SLM technique offers a new approach for material processing that can be used to refine microstructures for improved tribological properties. © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
KW - Additive manufacturing
KW - AlSi10Mg
KW - melting mode
KW - nanoindentation
KW - tribological behaviour
KW - Fabrication
KW - Melting
KW - Microstructure
KW - Nanotechnology
KW - Silicon
KW - Tribology
KW - Wear of materials
KW - Wear resistance
KW - Conduction mode
KW - Keyhole mode
KW - Marangoni convection
KW - Material processing
KW - New approaches
KW - Selective laser melting (SLM)
KW - Strong convections
KW - Tribological properties
KW - Selective laser melting
U2 - 10.1080/17452759.2020.1811932
DO - 10.1080/17452759.2020.1811932
M3 - Journal article
VL - 15
SP - 570
EP - 582
JO - Virtual and Physical Prototyping
JF - Virtual and Physical Prototyping
SN - 1745-2759
IS - sup1
ER -