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Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing. / Fan, Xianqiang; Fleming, Tristan G.; Rees, David T. et al.
In: Additive Manufacturing, Vol. 71, 103587, 05.06.2023.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Fan, X, Fleming, TG, Rees, DT, Huang, Y, Marussi, S, Leung, CLA, Atwood, RC, Kao, A & Lee, PD 2023, 'Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing', Additive Manufacturing, vol. 71, 103587. https://doi.org/10.1016/j.addma.2023.103587

APA

Fan, X., Fleming, T. G., Rees, D. T., Huang, Y., Marussi, S., Leung, C. L. A., Atwood, R. C., Kao, A., & Lee, P. D. (2023). Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing. Additive Manufacturing, 71, Article 103587. https://doi.org/10.1016/j.addma.2023.103587

Vancouver

Fan X, Fleming TG, Rees DT, Huang Y, Marussi S, Leung CLA et al. Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing. Additive Manufacturing. 2023 Jun 5;71:103587. Epub 2023 May 9. doi: 10.1016/j.addma.2023.103587

Author

Fan, Xianqiang ; Fleming, Tristan G. ; Rees, David T. et al. / Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing. In: Additive Manufacturing. 2023 ; Vol. 71.

Bibtex

@article{b76ef996608f4cde8e0b40f8aa9d3504,
title = "Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing",
abstract = "Melt flow is critical to build quality during additive manufacturing (AM). When an external magnetic field is applied, it causes forces that alter the flow through the thermoelectric magnetohydrodynamic (TEMHD) effect, potentially altering the final microstructure. However, the extent of TEMHD forces and their underlying mechanisms, remain unclear. We trace the flow of tungsten particles using in situ high-speed synchrotron X-ray radiography and ex situ tomography to reveal the structure of TEMHD-induced flow during directed energy deposition AM (DED-AM). When no magnetic field is imposed, Marangoni convection dominates the flow, leading to a relatively even particle distribution. With a magnetic field parallel to the scan direction, TEMHD flow is induced, circulating in the cross-sectional plane, causing particle segregation to the bottom and side of the pool. Further, a downward magnetic field causes horizontal circulation, segregating particles to the other side. Our results demonstrate that TEMHD can disrupt melt pool flow during DED-AM.",
keywords = "Additive manufacturing, Melt flow control, Thermoelectric magnetohydrodynamic, Magnetic Fields, Tungsten tracer",
author = "Xianqiang Fan and Fleming, {Tristan G.} and Rees, {David T.} and Yuze Huang and Sebastian Marussi and Leung, {Chu Lun Alex} and Atwood, {Robert C.} and Andrew Kao and Lee, {Peter D.}",
year = "2023",
month = jun,
day = "5",
doi = "10.1016/j.addma.2023.103587",
language = "English",
volume = "71",
journal = "Additive Manufacturing",
issn = "2214-8604",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Thermoelectric magnetohydrodynamic control of melt pool flow during laser directed energy deposition additive manufacturing

AU - Fan, Xianqiang

AU - Fleming, Tristan G.

AU - Rees, David T.

AU - Huang, Yuze

AU - Marussi, Sebastian

AU - Leung, Chu Lun Alex

AU - Atwood, Robert C.

AU - Kao, Andrew

AU - Lee, Peter D.

PY - 2023/6/5

Y1 - 2023/6/5

N2 - Melt flow is critical to build quality during additive manufacturing (AM). When an external magnetic field is applied, it causes forces that alter the flow through the thermoelectric magnetohydrodynamic (TEMHD) effect, potentially altering the final microstructure. However, the extent of TEMHD forces and their underlying mechanisms, remain unclear. We trace the flow of tungsten particles using in situ high-speed synchrotron X-ray radiography and ex situ tomography to reveal the structure of TEMHD-induced flow during directed energy deposition AM (DED-AM). When no magnetic field is imposed, Marangoni convection dominates the flow, leading to a relatively even particle distribution. With a magnetic field parallel to the scan direction, TEMHD flow is induced, circulating in the cross-sectional plane, causing particle segregation to the bottom and side of the pool. Further, a downward magnetic field causes horizontal circulation, segregating particles to the other side. Our results demonstrate that TEMHD can disrupt melt pool flow during DED-AM.

AB - Melt flow is critical to build quality during additive manufacturing (AM). When an external magnetic field is applied, it causes forces that alter the flow through the thermoelectric magnetohydrodynamic (TEMHD) effect, potentially altering the final microstructure. However, the extent of TEMHD forces and their underlying mechanisms, remain unclear. We trace the flow of tungsten particles using in situ high-speed synchrotron X-ray radiography and ex situ tomography to reveal the structure of TEMHD-induced flow during directed energy deposition AM (DED-AM). When no magnetic field is imposed, Marangoni convection dominates the flow, leading to a relatively even particle distribution. With a magnetic field parallel to the scan direction, TEMHD flow is induced, circulating in the cross-sectional plane, causing particle segregation to the bottom and side of the pool. Further, a downward magnetic field causes horizontal circulation, segregating particles to the other side. Our results demonstrate that TEMHD can disrupt melt pool flow during DED-AM.

KW - Additive manufacturing

KW - Melt flow control

KW - Thermoelectric magnetohydrodynamic

KW - Magnetic Fields

KW - Tungsten tracer

U2 - 10.1016/j.addma.2023.103587

DO - 10.1016/j.addma.2023.103587

M3 - Journal article

VL - 71

JO - Additive Manufacturing

JF - Additive Manufacturing

SN - 2214-8604

M1 - 103587

ER -