[HTML][HTML] A critical review on the effects of process-induced porosity on the mechanical properties of alloys fabricated by laser powder bed fusion

WH Kan, LNS Chiu, CVS Lim, Y Zhu, Y Tian… - Journal of Materials …, 2022 - Springer
Laser powder bed fusion (LPBF) is an emerging additive manufacturing technique that is
currently adopted by a number of industries for its ability to directly fabricate complex near …

[HTML][HTML] Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

MP Haines, VV Rielli, S Primig, N Haghdadi - Journal of Materials Science, 2022 - Springer
Metal additive manufacturing (AM) has unlocked unique opportunities for making complex
Ni-based superalloy parts with reduced material waste, development costs, and production …

[HTML][HTML] Universal scaling laws of keyhole stability and porosity in 3D printing of metals

Z Gan, OL Kafka, N Parab, C Zhao, L Fang… - Nature …, 2021 - nature.com
Abstract Metal three-dimensional (3D) printing includes a vast number of operation and
material parameters with complex dependencies, which significantly complicates process …

[HTML][HTML] Data-driven discovery of dimensionless numbers and governing laws from scarce measurements

X Xie, A Samaei, J Guo, WK Liu, Z Gan - Nature communications, 2022 - nature.com
Dimensionless numbers and scaling laws provide elegant insights into the characteristic
properties of physical systems. Classical dimensional analysis and similitude theory fail to …

Linking process parameters with lack-of-fusion porosity for laser powder bed fusion metal additive manufacturing

S Mojumder, Z Gan, Y Li, A Al Amin, WK Liu - Additive Manufacturing, 2023 - Elsevier
Structural defects such as porosity have detrimental effects on additively manufactured parts
which can be reduced by choosing optimal process conditions. In this work, the relationship …

Is high-speed powder spreading really unfavourable for the part quality of laser powder bed fusion additive manufacturing?

H Chen, T Cheng, Z Li, Q Wei, W Yan - Acta materialia, 2022 - Elsevier
Although high-speed powder spreading can efficiently enhance the productivity of laser
powder bed fusion (LPBF) additive manufacturing, it is rarely used because it is generally …

[HTML][HTML] Grain refinement in laser powder bed fusion: The influence of dynamic recrystallization and recovery

HE Sabzi, NT Aboulkhair, X Liang, XH Li, M Simonelli… - Materials & Design, 2020 - Elsevier
During laser powder bed fusion (LPBF) the powder bed undergoes several thermal cycles
incorporating complex thermo-mechanical processing. Different restoration mechanisms …

Effect of scan rotation on the microstructure development and mechanical properties of 316L parts produced by laser powder bed fusion

A Leicht, CH Yu, V Luzin, U Klement, E Hryha - Materials Characterization, 2020 - Elsevier
Additive manufacturing possesses appealing features for producing high-performance
components, for a wide range of materials. One of these features is the ability to locally tailor …

Influence of powder recycling on 316L stainless steel feedstocks and printed parts in laser powder bed fusion

T Delacroix, F Lomello, F Schuster, H Maskrot… - Additive …, 2022 - Elsevier
Abstract In Laser Powder Bed Fusion (L-PBF) of metallic materials, costs and material yield
strongly depend on the ability to reuse powder efficiently, as a significant amount is not …

[HTML][HTML] Classification of specimen density in laser powder bed fusion (L-PBF) using in-process structure-borne acoustic process emissions

N Eschner, L Weiser, B Häfner, G Lanza - Additive Manufacturing, 2020 - Elsevier
Currently, the laser powder bed fusion (L-PBF) process cannot offer a reproducible and
predefined quality of the processed parts. Recent research on process monitoring focuses …