In-situ characterization and quantification of melt pool variation under constant input energy density in laser powder bed fusion additive manufacturing process
Size and shape of a melt pool play a critical role in determining the microstructure in
additively manufactured metals. However, it is very challenging to directly characterize the …
additively manufactured metals. However, it is very challenging to directly characterize the …
Elucidating the effect of preheating temperature on melt pool morphology variation in Inconel 718 laser powder bed fusion via simulation and experiment
In laser powder bed fusion (L-PBF) additive manufacturing, the mechanical performance,
microstructure and defects of fabricated parts are closely associated with the melt pool …
microstructure and defects of fabricated parts are closely associated with the melt pool …
Energy coupling mechanisms and scaling behavior associated with laser powder bed fusion additive manufacturing
In situ optical absorptivity measurements are carried out to clarify the physics of the laser
material interactions involved and to validate both finite element and analytical models …
material interactions involved and to validate both finite element and analytical models …
[HTML][HTML] Influence of oxygen content on melt pool dynamics in metal additive manufacturing: High-fidelity modeling with experimental validation
In the metal additive manufacturing process, the exposure to oxygen and its incorporation
into the melt pool are usually deemed unfavorable, but cannot be completely eliminated …
into the melt pool are usually deemed unfavorable, but cannot be completely eliminated …
In-situ characterization of laser-powder interaction and cooling rates through high-speed imaging of powder bed fusion additive manufacturing
Detailed understanding of the complex melt pool physics plays a vital role in predicting
optimal processing regimes in laser powder bed fusion additive manufacturing. In this work …
optimal processing regimes in laser powder bed fusion additive manufacturing. In this work …
Computational investigation of melt pool process dynamics and pore formation in laser powder bed fusion
In the laser powder bed fusion additive manufacturing process, the presence of porosity may
result in cracks and significantly affects the part performance. A comprehensive …
result in cracks and significantly affects the part performance. A comprehensive …
[HTML][HTML] On the effect of shielding gas flow on porosity and melt pool geometry in laser powder bed fusion additive manufacturing
J Reijonen, A Revuelta, T Riipinen, K Ruusuvuori… - Additive …, 2020 - Elsevier
Metal additive manufacturing is moving from rapid prototyping to on-demand manufacturing
and even to serial production. Consistent part quality and development of a wider range of …
and even to serial production. Consistent part quality and development of a wider range of …
High-power laser-matter interaction during laser powder bed fusion
J Yin, LL Yang, X Yang, H Zhu, D Wang, L Ke… - Additive …, 2019 - Elsevier
Laser powder bed fusion (LPBF) additive manufacturing (AM) is developing with the goal of
fabricating parts with high performance and high efficiency. Laser power is the key factor to …
fabricating parts with high performance and high efficiency. Laser power is the key factor to …
Laser spot size and scaling laws for laser beam additive manufacturing
Laser powder bed fusion (L-PBF) additive manufacturing (AM) requires the careful selection
of laser process parameters for each feedstock material and machine, which is a laborious …
of laser process parameters for each feedstock material and machine, which is a laborious …
Real-time process monitoring and closed-loop control on laser power via a customized laser powder bed fusion platform
Additive manufacturing (AM) is one of the most effective ways to fabricate parts with complex
geometries using various materials. However, AM also suffers from printing quality issues …
geometries using various materials. However, AM also suffers from printing quality issues …