TU Darmstadt / ULB / TUprints

Nanoparticle Tracing during Laser Powder Bed Fusion of Oxide Dispersion Strengthened Steels

Yang, Yangyiwei ; Doñate-Buendía, Carlos ; Oyedeji, Timileyin David ; Gökce, Bilal ; Xu, Bai-Xiang (2021)
Nanoparticle Tracing during Laser Powder Bed Fusion of Oxide Dispersion Strengthened Steels.
In: Materials, 2021, 14 (13)
doi: 10.26083/tuprints-00019391
Article, Secondary publication, Publisher's Version

materials-14-03463 (1).pdf
Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

Download (8MB) | Preview
Item Type: Article
Type of entry: Secondary publication
Title: Nanoparticle Tracing during Laser Powder Bed Fusion of Oxide Dispersion Strengthened Steels
Language: English
Date: 30 August 2021
Place of Publication: Darmstadt
Year of primary publication: 2021
Publisher: MDPI
Journal or Publication Title: Materials
Volume of the journal: 14
Issue Number: 13
Collation: 24 Seiten
DOI: 10.26083/tuprints-00019391
Corresponding Links:
Origin: Secondary publication via sponsored Golden Open Access

The control of nanoparticle agglomeration during the fabrication of oxide dispersion strengthened steels is a key factor in maximizing their mechanical and high temperature reinforcement properties. However, the characterization of the nanoparticle evolution during processing represents a challenge due to the lack of experimental methodologies that allow in situ evaluation during laser powder bed fusion (LPBF) of nanoparticle-additivated steel powders. To address this problem, a simulation scheme is proposed to trace the drift and the interactions of the nanoparticles in the melt pool by joint heat-melt-microstructure–coupled phase-field simulation with nanoparticle kinematics. Van derWaals attraction and electrostatic repulsion with screened-Coulomb potential are explicitly employed to model the interactions with assumptions made based on reported experimental evidence. Numerical simulations have been conducted for LPBF of oxide nanoparticle-additivated PM2000 powder considering various factors, including the nanoparticle composition and size distribution. The obtained results provide a statistical and graphical demonstration of the temporal and spatial variations of the traced nanoparticles, showing ~55% of the nanoparticles within the generated grains, and a smaller fraction of ~30% in the pores, ~13% on the surface, and ~2% on the grain boundaries. To prove the methodology and compare it with experimental observations, the simulations are performed for LPBF of a 0.005 wt % yttrium oxide nanoparticle-additivated PM2000 powder and the final degree of nanoparticle agglomeration and distribution are analyzed with respect to a series of geometric and material parameters.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-193919
Additional Information:

Keywords: additive manufacturing; laser powder bed fusion; selective laser melting; oxide dispersion strengthened steel; phase-field model; finite element simulation; nanoparticle interaction

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
Date Deposited: 30 Aug 2021 12:19
Last Modified: 14 Nov 2023 19:04
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19391
Actions (login required)
View Item View Item