[HTML][HTML] Keyhole-induced porosities in Laser-based Powder Bed Fusion (L-PBF) of Ti6Al4V: High-fidelity modelling and experimental validation

M Bayat, A Thanki, S Mohanty, A Witvrouw, S Yang… - Additive …, 2019 - Elsevier
… to investigate the formation and evolution of keyhole-induced porosities during the single-track
L-PBF process of a Ti6Al4V alloy. The high-fidelity numerical model accomplished in the …

[PDF][PDF] Keyhole-induced porosities in Laser-based Powder Bed Fusion (L-PBF) of Ti6Al4V: High-fidelity modelling and experimental validation

M Bayat, A Thanki, S Mohanty, A Witvrouw… - Additive …, 2019 - lirias.kuleuven.be
… to investigate the formation and evolution of keyhole-induced porosities during the single-track
L-PBF process of a Ti6Al4V alloy. The high-fidelity numerical model accomplished in the …

Keyhole formation by laser drilling in laser powder bed fusion of Ti6Al4V biomedical alloy: Mesoscopic computational fluid dynamics simulation versus mathematical …

A Ur Rehman, MA Mahmood, F Pitir, MU Salamci… - Nanomaterials, 2021 - mdpi.com
powder selection and thickness of the metallic powder bed … formation and corresponding
porosity development in the LPBF … [35] investigated keyhole development using a high-fidelity

Benchmark study of melt pool and keyhole dynamics, laser absorptance, and porosity in additive manufacturing of Ti-6Al-4V

A Samaei, JP Leonor, Z Gan, Z Sang, X Xie… - Progress in Additive …, 2024 - Springer
… X-ray imaging and high-fidelity multiphysics modeling, we … the size and shape of
keyhole-induced pores during the additive … powder bed characteristics when optimizing …

Pore defects in Laser Powder Bed Fusion: Formation mechanism, control method, and perspectives

C Du, Y Zhao, J Jiang, Q Wang, H Wang, N Li… - Journal of Alloys and …, 2023 - Elsevier
… of the LPBF-ed Ti6Al4V alloy in different parameters. As shown … Another type of
keyhole-induced pores will appear when the … porosity in the formed part was related to the porosity

Understanding keyhole induced-porosities in laser powder bed fusion of aluminum and elimination strategy

L Guo, H Wang, H Liu, Y Huang, Q Wei… - International Journal of …, 2023 - Elsevier
… fluid flow was responsible for the porosity during laser fusion welding. Khairallah et al. [29] …
-war between surface tension and recoil pressure via a high-fidelity model. Bayat et al. [30] …

High fidelity multi-physics modeling of laser metal interaction and keyhole dynamics in powder bed fusion

M Abdi, S Mosbah, M Ayadi - Progress in Additive Manufacturing, 2024 - Springer
… [3] specifically designed for L-PBF applications. For example, Kuo et … of Michigan’s Laser-Based
Manufacturing lab studied the … and diagrams of the Ti-6Al-4V case. While referencing its …

Mitigating keyhole pore formation by nanoparticles during laser powder bed fusion additive manufacturing

M Qu, Q Guo, LI Escano, SJ Clark, K Fezzaa… - Additive Manufacturing …, 2022 - Elsevier
… Here we report a novel approach to mitigate keyhole pore formation during laser powder
bed fusion (LPBF) process by using stable nanoparticles. The critical keyhole depth for keyhole …

Analytical prediction of keyhole porosity in laser powder bed fusion

W Wang, J Ning, SY Liang - The International Journal of Advanced …, 2022 - Springer
… to predict the keyhole-induced porosity of Ti6Al4V in LPBF … The physical and thermal
properties of Ti6Al4V are shown in … as the characteristics of laser source and powder bed [8]. The …

Keyhole fluctuation and pore formation mechanisms during laser powder bed fusion additive manufacturing

Y Huang, TG Fleming, SJ Clark, S Marussi… - Nature …, 2022 - nature.com
… Keyhole porosity is a key concern in laser powder-bed fusion … 46 , as well as LPBF of Ti6Al4V
42 . For similar AED, we … the evolutions of the keyhole-induced bubbles and extracted …