Defects and anomalies in powder bed fusion metal additive manufacturing

A Mostafaei, C Zhao, Y He, SR Ghiaasiaan… - Current Opinion in Solid …, 2022 - Elsevier
Metal additive manufacturing is a disruptive technology that is revolutionizing the
manufacturing industry. Despite its unrivaled capability for directly fabricating metal parts …

[HTML][HTML] A review of multi-scale and multi-physics simulations of metal additive manufacturing processes with focus on modeling strategies

M Bayat, W Dong, J Thorborg, AC To, JH Hattel - Additive Manufacturing, 2021 - Elsevier
Numerical simulations have recently shown their potential as a robust, cheap and reliable
tool for predicting the quality of components produced by metal additive manufacturing …

[HTML][HTML] Metal vaporization and its influence during laser powder bed fusion process

J Liu, P Wen - Materials & Design, 2022 - Elsevier
Laser powder bed fusion (LPBF) is a key metal additive manufacturing process and has
attracted increasing attention both in academia and industry. An essential physical issue …

[HTML][HTML] Quality control: Internal defects formation mechanism of selective laser melting based on laser-powder-melt pool interaction: A review

G Yang, Y Xie, S Zhao, L Qin, X Wang, B Wu - Chinese Journal of …, 2022 - Elsevier
Selective laser melting (SLM) is a 3D printing technology with a high near-net-shape ability
and forming accuracy. However, the inevitable internal defects significantly hinder its …

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
Laser powder bed fusion (LPBF) technology has the potential to revolutionize the fabrication
of complex metal components in the aerospace, medical, and automotive industries …

[HTML][HTML] Interaction between high-velocity gas and liquid in gas atomization revealed by a new coupled simulation model

S Luo, H Wang, Z Gao, Y Wu, H Wang - Materials & Design, 2021 - Elsevier
Due to the high efficiency and low cost, gas atomization (GA) has been widely applied to
produce metal powders. In this paper, the GA process is first modeled by combining the …

Melting modes in laser powder bed fusion

S Patel, M Vlasea - Materialia, 2020 - Elsevier
Depending on processing conditions, laser powder bed fusion (LPBF) is known to have two
operational regimes–conduction mode and keyhole mode. Heat conduction is the dominant …

[HTML][HTML] Grain structure evolution in transition-mode melting in direct energy deposition

DR Liu, S Wang, W Yan - Materials & Design, 2020 - Elsevier
Direct energy deposition (DED) is a promising additive manufacturing technology for large-
scale fabrications of high-value components. Grain structure control is challenging but …

[HTML][HTML] Part-scale thermo-mechanical modelling of distortions in laser powder bed fusion–analysis of the sequential flash heating method with experimental …

M Bayat, CG Klingaa, S Mohanty, D De Baere… - Additive …, 2020 - Elsevier
Residual stresses and deflections are two major issues in laser-based powder bed fusion (L-
PBF) parts. One of the most efficient and reliable ways for predicting residual stresses and …

The effect of laser welding modes on mechanical properties and microstructure of 304L stainless steel parts fabricated by laser-foil-printing additive manufacturing

CH Hung, WT Chen, MH Sehhat, MC Leu - The International Journal of …, 2021 - Springer
The success of laser-foil-printing (LFP) additive manufacturing depends critically on the
laser welding of sheet metals onto the substrate or the previous layer during the part …