Thermo-mechanical simulation of annealing heat treatment of Ni-based GH4099 superalloy made by laser powder bed fusion

X Lu, C Chen, G Zhang, M Chiumenti, M Cervera… - Additive …, 2023 - Elsevier
Laser powder bed fusion (LPBF) additive manufacturing (AM) unavoidably generates
residual stresses due to sharp thermal gradients and the strong mechanical constraints of …

[HTML][HTML] An experimental and modeling study on warping in additively manufactured overhang structures

X Gao, F Okigami, N Avedissian, W Zhang - Additive Manufacturing, 2024 - Elsevier
Printing overhang structures by laser-powder bed fusion (L-PBF) additive manufacturing
remains challenging due to warping distortion. This paper studies the warping formation of …

Speeding up mesoscale thermal simulations of powder bed additive manufacturing thanks to the forward Euler time-integration scheme: A critical assessment

S Essongue, Y Ledoux, A Ballu - Finite Elements in Analysis and Design, 2022 - Elsevier
This work addresses the mesoscale conduction-based modelling of Powder Bed Fusion for
metallic materials. The forward Euler (explicit) time integration strategy is thoroughly …

Prediction and validation of melt pool dimensions and geometric distortions of additively manufactured AlSi10Mg

R Ullah, J Lian, J Akmal, J Wu, E Niemi - The International Journal of …, 2023 - Springer
A finite element–based thermomechanical modeling approach is developed in this study to
provide a prediction of the mesoscale melt pool behavior and part-scale properties for …

Electron-optical in situ imaging for the assessment of accuracy in electron beam powder bed fusion

C Arnold, C Breuning, C Körner - Materials, 2021 - mdpi.com
The current study evaluates the capabilities of electron-optical (ELO) in situ imaging with
respect to monitoring and prediction of manufacturing precision in electron beam powder …

Improving component dimensional accuracy in electron beam powder bed fusion by addressing nonlinear deformations with 3D compensation strategies

C Wang, CN Sun, L Zhang, S Feih… - Virtual and Physical …, 2024 - Taylor & Francis
Electron beam powder bed fusion (EB-PBF) is effective for producing complex geometrical
components with minimal residual stress because of elevated powder bed temperatures; …

A high-confidence geometric compensation approach for improving downward surface accuracy

W Pan, Y Yang, WF Lu, Y Wang, M Li, H Wu - Additive Manufacturing, 2024 - Elsevier
Overhangs are usually inevitable in Additive Manufacturing (AM). Moreover, making their
downward surfaces reach higher accuracy after printing has an imperative impact on …

Mechanical and microstructural characterization of titanium gr. 5 parts produced by different manufacturing routes

D Campanella, G Buffa, A El Hassanin… - … International Journal of …, 2022 - Springer
Since a few decades, the aircraft industry has shifted its preference for metal parts to titanium
and its alloys, such as the high-strength titanium grade 5 alloy. Because of titanium grade 5 …

Effect of electron beam energy density on the microstructure and properties of CuCrZr alloy prepared by electron beam powder bed fusion (EB-PBF)

Y Li, S Liu, Y Wang, Y Wei, J Wang, L Zhang… - Materials …, 2024 - Elsevier
The preparation of CuCrZr alloy parts by traditional material processing methods usually
requires solution and aging treatment to precipitate Cr phase to improve the mechanical …

Geometrical defect analysis of overhang geometry produced by electron beam melting: experimental and statistical investigations

Y Ledoux, S Ghaoui, TH Vo, A Ballu… - … International Journal of …, 2022 - Springer
While electron beam melting is used to produce near net shape parts, it is still important to
study geometrical defects since the final parts may include a serious change of geometry or …