Dynamics of pore formation during laser powder bed fusion additive manufacturing

AA Martin, NP Calta, SA Khairallah, J Wang… - Nature …, 2019 - nature.com
Laser powder bed fusion additive manufacturing is an emerging 3D printing technique for
the fabrication of advanced metal components. Widespread adoption of it and similar …

Critical role of scan strategies on the development of microstructure, texture, and residual stresses during laser powder bed fusion additive manufacturing

N Nadammal, T Mishurova, T Fritsch… - Additive …, 2021 - Elsevier
Laser based powder bed fusion additive manufacturing offers the flexibility to incorporate
standard and user-defined scan strategies in a layer or in between the layers for the …

Part geometry and conduction-based laser power control for powder bed fusion additive manufacturing

H Yeung, B Lane, J Fox - Additive manufacturing, 2019 - Elsevier
Laser powder bed fusion (LPBF) uses a focused, high power laser to repeatedly scan
geometric patterns on thin layers of metal powder, which build up to a final, solid three …

Tracking and controlling the morphology evolution of 3D powder-bed fusion in situ using inline coherent imaging

TG Fleming, SGL Nestor, TR Allen, MA Boukhaled… - Additive …, 2020 - Elsevier
Inconsistent part quality is a challenge to the widespread adoption of powder-bed fusion
additive manufacturing. Previous efforts to monitor the PBF process in situ have been mostly …

Scanning strategies in the PBF process: a critical review

E Malekipour, H El-Mounayri - ASME …, 2020 - asmedigitalcollection.asme.org
The powder-bed fusion (PBF) process is capable of producing near-fully dense metallic
parts; however, various defects—particularly thermal abnormalities—can still be observed …

[HTML][HTML] The effect of build direction and geometric optimization in laser powder bed fusion of Inconel 718 structures with internal channels

G Kasperovich, R Becker, K Artzt, P Barriobero-Vila… - Materials & Design, 2021 - Elsevier
A laser powder bed fusion (LPBF) strategy was developed for manufacturing small channels
with high dimensional accuracy in Inconel 718 structures. Particular attention was paid to …

Design and implementation of laser powder bed fusion additive manufacturing testbed control software

H Yeung, K Hutchinson, D Lin - 2021 - repositories.lib.utexas.edu
Abstract The National Institute of Standards and Technology developed a facility titled the
Additive Manufacturing Metrology Testbed to advance the research in laser powder bed …

Numerical modelling of surface morphology in selective laser melting

W Ge, S Han, SJ Na, JYH Fuh - Computational Materials Science, 2021 - Elsevier
Selective laser melting (SLM) is a promising additive manufacturing technology, which
involves complex physics such as heat and mass transfer, phase transformation and molten …

Numerical evaluation of advanced laser control strategies influence on residual stresses for laser powder bed fusion systems

M Carraturo, B Lane, H Yeung… - Integrating Materials and …, 2020 - Springer
Process-dependent residual stresses are one of the main burdens to a widespread adoption
of laser powder bed fusion technology in industry. Residual stresses are directly influenced …

A step-by-step guide to the L-PBF process

I Yadroitsev, I Yadroitsava - Fundamentals of laser powder bed fusion of …, 2021 - Elsevier
For widespread adoption of laser powder bed fusion (L-PBF) in industry, defect-free parts
with high productivity and repeatability should be produced. Stability and certification of the …