The causal relationship between melt pool geometry and energy absorption measured in real time during laser-based manufacturing
BJ Simonds, J Tanner, A Artusio-Glimpse… - Applied Materials …, 2021 - Elsevier
During laser powder bed fusion additive manufacturing, laser power absorption is governed
by a protean pool of molten metal that can present as a highly reflective surface, a deeply …
by a protean pool of molten metal that can present as a highly reflective surface, a deeply …
Analytical modelling of heat accumulation in laser based additive manufacturing processes of metals
The flexibility of additive manufacturing processes results from the principle of subsequently
adding small amounts of material in individual layers or beads on top of each other. The …
adding small amounts of material in individual layers or beads on top of each other. The …
Onset of periodic oscillations as a precursor of a transition to pore-generating turbulence in laser melting
Laser melting technologies in welding and additive manufacturing, such as laser powder
bed fusion, promises to revolutionize manufacturing. However, a challenge remains in …
bed fusion, promises to revolutionize manufacturing. However, a challenge remains in …
Transient laser energy absorption, co-axial melt pool monitoring, and relationship to melt pool morphology
Melt pool monitoring (MPM) is a technique used in laser powder bed fusion (LPBF) to extract
features from in-situ sensor signals that correlate to defect formation or general part …
features from in-situ sensor signals that correlate to defect formation or general part …
Calibrating uncertain parameters in melt pool simulations of additive manufacturing
Melt pool scale numerical modeling of additive manufacturing (AM) processes can provide
predictive capabilities and theoretical insight into the process-property-structure …
predictive capabilities and theoretical insight into the process-property-structure …
Recent progress on in-situ characterization of laser additive manufacturing process by synchrotron radiation
W Lu, L Zhao, Z Su, J Li, Q Hu - Journal of Materials Science & Technology, 2024 - Elsevier
Laser additive manufacturing (LAM) has been widely used in high-end manufacturing fields
such as aerospace, nuclear power, and shipbuilding. However, it is a grand challenge for …
such as aerospace, nuclear power, and shipbuilding. However, it is a grand challenge for …
Impact of atomization gas on characteristics of austenitic stainless steel powder feedstocks for additive manufacturing
Given the complexity of the laser-material interactions prevalent in powder bed fusion
additive manufacturing, the need for tight control of alloy composition in the metal powder …
additive manufacturing, the need for tight control of alloy composition in the metal powder …
Effect of layer thickness on the melt pool behavior and pore defects evolution of selective laser melting CuCrZr alloy
S Li, G Fu, H Li, Z Ren, S Li, H Xiao, Q Peng - Journal of Alloys and …, 2023 - Elsevier
Despite the great potential of selective laser melting technology, the low build rate has
become a major reason limiting its large-scale use. Thick layer thickness can significantly …
become a major reason limiting its large-scale use. Thick layer thickness can significantly …
Absorptivity measurements during laser powder bed fusion of pure copper with a 1 kW cw green laser
G Nordet, C Gorny, Y Mayi, J Daligault, M Dal… - Optics & Laser …, 2022 - Elsevier
A 1 kW CW green laser source operating at 515 nm was used to investigate the absorptivity
of pure copper powder beds and pure copper substrates. Various interaction regimes were …
of pure copper powder beds and pure copper substrates. Various interaction regimes were …
Thermal flow characteristics and the evolution of laser absorption in laser powder bed fusion of Cu-Cr-Zr alloy
The ultra-high transience and complexity of the LPBF process brings critical challenges to
understanding the underlying physics behind the defect formation, and mathematical …
understanding the underlying physics behind the defect formation, and mathematical …