In-situ grain structure control in directed energy deposition of Ti6Al4V

G Zhang, X Lu, J Li, J Chen, X Lin, M Wang, H Tan… - Additive …, 2022‏ - Elsevier
In metal additive manufacturing (AM), long columnar grains along the building direction due
to highly directional thermal gradients often lead to a strong texture and severe anisotropy in …

Microstructure characteristics of a René N5 Ni-based single-crystal superalloy prepared by laser-directed energy deposition

R Wang, J Wang, T Cao, R Zhao, X Lu, W Guan… - Additive …, 2023‏ - Elsevier
This work focused on the microstructure and mechanical properties of nickel-based single
crystal (SX) superalloy René N5 prepared by laser-directed energy deposition (L-DED) …

Hierarchically heterogeneous microstructure and mechanical properties in laser-directed energy deposition of γ-TiAl alloy through intrinsic cyclic heat treatment

T Cao, C Chen, R Zhao, X Lu, G Zhen, C Lu… - Materials Science and …, 2024‏ - Elsevier
The complex thermal effects of laser direct energy deposition (L-DED) provide significant
advantages for production of high-performance γ-TiAl alloy, whereas challenges still exist in …

Residual stresses control in additive manufacturing

X Lu, M Cervera, M Chiumenti, X Lin - Journal of Manufacturing and …, 2021‏ - mdpi.com
Residual stresses are one of the primary causes for the failure of parts or systems in metal
additive manufacturing (AM), since they easily induce crack propagation and structural …

Microstructure evaluation and resultant mechanical properties of laser-arc hybrid additive manufactured Cu-Cr-Zr alloy

G Ma, S Wu, R Wang, D Liu, F Niu, G Bi… - Journal of Alloys and …, 2022‏ - Elsevier
Laser-arc hybrid additive manufacturing (LAHAM) of Cu-Cr-Zr alloy was studied. The
microstructure evaluation and mechanical properties of the samples fabricated by LAHAM …

[HTML][HTML] Crack-free laser powder bed fusion by substrate design

X Lu, W Zhang, M Chiumenti, M Cervera, B Gillham… - Additive …, 2022‏ - Elsevier
Additively manufactured components by laser powder bed fusion (LPBF) often suffer from
stress-induced cracks (eg delamination), especially at the build-substrate interfaces where …

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 …

Porosity control and properties improvement of Al-Cu alloys via solidification condition optimisation in wire and arc additive manufacturing

Z Wang, X Lu, X Lin, Z Hao, C Hu, Z Feng… - Virtual and Physical …, 2024‏ - Taylor & Francis
This study presents an innovative liquid-nitrogen cooling (LNC) strategy to address
hydrogen porosity in Wire and Arc Additive Manufactured (WAAM) Al-Cu alloys, which …

A multi-criteria h-adaptive finite-element framework for industrial part-scale thermal analysis in additive manufacturing processes

CA Moreira, MA Caicedo, M Cervera… - Engineering with …, 2022‏ - Springer
This work presents an h-adaptive finite-element (FE) strategy to address the numerical
simulation of additive manufacturing (AM) of large-scale parts. The wire-arc additive …

[HTML][HTML] A highly efficient computational approach for fast scan-resolved microstructure predictions in metal additive manufacturing on the scale of real parts

SD Proell, J Brotz, M Kronbichler, WA Wall… - Additive Manufacturing, 2024‏ - Elsevier
In metal additive manufacturing (AM), fast and efficient simulation approaches are essential
to explore the full potential of these promising processes, particularly in generating …