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Multi-Scale Modelling of the Bound Metal Deposition Manufacturing of Ti6Al4V

1
Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
2
KBR, Inc., Ames Research Center, Moffett Field, CA 94035, USA
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Ames Research Center, Moffett Field, CA 94035, USA
4
Computational Mechanics and Materials, Idaho National Laboratory, Idaho Falls, ID 83415, USA
5
Marshall Space Flight Center, Huntsville, AL 35812, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Johan Jacquemin
Thermo 2022, 2(3), 116-148; https://doi.org/10.3390/thermo2030011
Received: 27 April 2022 / Revised: 29 May 2022 / Accepted: 6 June 2022 / Published: 23 June 2022
(This article belongs to the Special Issue Feature Papers of Thermo in 2022)
Nonlinear shrinkage of the metal part during manufacturing by bound metal deposition, both on the ground and under microgravity, is considered. A multi-scale physics-based approach is developed to address the problem. It spans timescales from atomistic dynamics on the order of nanoseconds to full-part shrinkage on the order of hours. This approach enables estimation of the key parameters of the problem, including the widths of grain boundaries, the coefficient of surface diffusion, the initial redistribution of particles during the debinding stage, the evolution of the microstructure from round particles to densely-packed grains, the corresponding changes in the total and chemical free energies, and the sintering stress. The method has been used to predict shrinkage at the levels of two particles, of the filament cross-section, of the sub-model, and of the whole green, brown, and metal parts. View Full-Text
Keywords: bound metal deposition; molecular dynamics; phase field approach; discrete element method; finite element method; experimental correlations bound metal deposition; molecular dynamics; phase field approach; discrete element method; finite element method; experimental correlations
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MDPI and ACS Style

Luchinsky, D.G.; Hafiychuck, V.; Wheeler, K.R.; Biswas, S.; Roberts, C.E.; Hanson, I.M.; Prater, T.J.; McClintock, P.V.E. Multi-Scale Modelling of the Bound Metal Deposition Manufacturing of Ti6Al4V. Thermo 2022, 2, 116-148. https://doi.org/10.3390/thermo2030011

AMA Style

Luchinsky DG, Hafiychuck V, Wheeler KR, Biswas S, Roberts CE, Hanson IM, Prater TJ, McClintock PVE. Multi-Scale Modelling of the Bound Metal Deposition Manufacturing of Ti6Al4V. Thermo. 2022; 2(3):116-148. https://doi.org/10.3390/thermo2030011

Chicago/Turabian Style

Luchinsky, Dmitry G., Vasyl Hafiychuck, Kevin R. Wheeler, Sudipta Biswas, Christopher E. Roberts, Ian M. Hanson, Tracie J. Prater, and Peter V.E. McClintock. 2022. "Multi-Scale Modelling of the Bound Metal Deposition Manufacturing of Ti6Al4V" Thermo 2, no. 3: 116-148. https://doi.org/10.3390/thermo2030011

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