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Description:

Solute segregation significantly affects material properties and is a critical issue in the laser powder-bed fusion (LPBF) additive manufacturing (AM) of Ni-based superalloys. In this study, we demonstrated a computational thermal-fluid dynamics (CtFD) simulation coupled multi-phase-field (MPF) simulation with a multicomponent-composition model of Ni-based superalloy to predict solute segregation under solidification conditions in LPBF. Solute segregation at the various interfacial regions of Ni-based multicomponent alloys could be predicted by the conventional MPF simulation. The design of crack-free Ni-based superalloys can be expedited by MPF simulations of a broad range of element combinations and their concentrations in multicomponent Ni-based superalloys.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Laser powder-bed fusion, Hastelloy-X nickel-based superalloy, Solute element segregation, Computational thermal-fluid dynamics simulation, Phase-field method

Date published: 2024-03-11

Publisher: Elsevier BV

Journal:

• Additive Manufacturing (ISSN: 22148604) vol. 84 104079

Funding:

• Japan Society for the Promotion of Science
• Japan Science and Technology Agency

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1016/j.addma.2024.104079

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Updated at: 2024-04-02 16:30:23 +0900

Published on MDR: 2024-04-02 16:30:23 +0900