A mathematical model of laser directed energy deposition for process mapping and geometry prediction of Ti-5553 single-tracks

Ansari, Mohammad; Martinez-Marchese, A.; Huang, Yuze; Toyserkani, Ehsan

doi:10.1016/j.mtla.2020.100710

Cited by 23 publications

(6 citation statements)

References 41 publications

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“…A powder feed rate of 12 g/min was used in this study to verify the stability of the levitated disc with high powder feed rates. The velocity of the powders was calculated using the radius of the outlet of the material nozzle and the volumetric flow rate through the nozzle [24]. Having selected the process parameters for AM operations, as highlighted in Section 1, the velocity of the powder particles was the only remaining unknown variable in Equation ( 2).…”

Section: Stability Of Levitated Disc With Impact Of Powder Particles-...mentioning

confidence: 99%

Experimental Implementation of a Magnetic Levitation System for Laser-Directed Energy Deposition via Powder Feeding Additive Manufacturing Applications

et al. 2023

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Magnetic levitation and additive manufacturing (AM) are two fields of significant interest in academic research. The use of non-contact forces for magnetic levitation techniques provides opportunities for adoption within the AM environment. The key goal of this article is to experimentally validate the implementation of a magnetic levitation system for Laser-Directed Energy Deposition via Powder Feeding (LDED-PF) Additive Manufacturing applications. Through simulations (conducted in ANSYS Maxwell) and experimental implementation, the levitation system’s stability is tested under a variety of different conditions. The experimental implementation highlights the feasibility of a magnetic levitation system for LDED-PF applications. The levitation system developed is capable of the suspension of non-magnetic materials. The system is also able to maintain stable levitation for extended periods of time. The incorporation of the levitation system into the AM environment may result in an increased maneuverability of non-clamped structures for AM deposition operations.

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Section: Stability Of Levitated Disc With Impact Of Powder Particles-...mentioning

confidence: 99%

Experimental Implementation of a Magnetic Levitation System for Laser-Directed Energy Deposition via Powder Feeding Additive Manufacturing Applications

et al. 2023

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“…A mathematical model of coupled the heat and mass transfer by the attenuated laser power and heated powder particles was presented in ref. [14].…”

Section: Introductionmentioning

confidence: 99%

The chemical interaction charged particles with target material under surface treatment of metal with particle beam

Parfenova

Knyazeva

2022

Z Angew Math Mech

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The paper presents a nonlinear coupled nonisothermal model of the process of material implementation into the target surface under conditions of surface treatment by a particle beam in the form of one or few consecutive pulses. The model takes into account the interaction of impurity diffusion, heat propagation, and mechanical disturbances, as well as the chemical reaction between the introduced impurity and the target material. The problem is solved numerically using an implicit symmetric difference scheme of the second‐order approximation in time and spatial coordinates. The results of solution are obtained for different time intervals. It was found that the interaction of different processes leads to the appearance of distortions in the front of waves. The distributions of temperature and impurity concentration have a wave character. The increment of the reaction product in the dynamics for different numbers of pulses is presented. The interaction mechanisms of the studied processes do not change and do not depend on the number of pulses. However, a more complicated picture is observed under treatment by several successive pulses due to the appearance of new extremes and distortions.

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“…Each heat source model can have its advantages and disadvantages. Some research studies [8][9][10] used a point heat source model to solve the heat conduction equation and simulate the temperature field in LDED-PF. A point heat source simplifies the complexity of energy distribution.…”

Section: Introductionmentioning

confidence: 99%

Analytical solutions for rapid prediction of transient temperature field in powder-fed laser directed energy deposition based on different heat source models

et al. 2021

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The present paper aims to develop an effective analytical solution for laser directed energy deposition through powder feeding (LDED-PF). Three heat source models are introduced and compared to analytically describe the transient temperature field in the process. These models are known as point (1D) heat source, circular (2D) heat source, and semi-spherical (3D) heat source. For the validation tests, single-track deposition of Ti-5Al-5 V-5Mo-3Cr powder on Ti-6Al-4 V substrate is conducted at different laser powers, scanning speeds, and powder feed rates. The temperature field is validated using the measurement of melt-pool/deposit geometry. In order to improve the model fidelity, the enhanced thermal diffusivity and heat source radius are calibrated in terms of linear functions. It is found that the 2D Gaussian heat source model, which is in agreement with the underlying physics of the process, establishes a better match between the predicted and experimental data. The developed model only needs the basic information from the LDED-PF setup and material thermal properties to predict the thermal history and melt-pool geometry at different processing parameters.

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A mathematical model of laser directed energy deposition for process mapping and geometry prediction of Ti-5553 single-tracks

Abstract: A mathematical model of laser directed energy deposition for process mapping and geometry prediction of Ti-5553 single-tracks, Materialia (2020), doi:

Cited by 23 publications

References 41 publications

Experimental Implementation of a Magnetic Levitation System for Laser-Directed Energy Deposition via Powder Feeding Additive Manufacturing Applications

Experimental Implementation of a Magnetic Levitation System for Laser-Directed Energy Deposition via Powder Feeding Additive Manufacturing Applications

The chemical interaction charged particles with target material under surface treatment of metal with particle beam

Analytical solutions for rapid prediction of transient temperature field in powder-fed laser directed energy deposition based on different heat source models

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