Influence of volumetric energy density on the tribological behaviors of pure nickel fabricated by laser powder bed fusion

Yue, Tianyang; Zou, Zhiyi; Zhang, Sheng; Xu, Yidi; Zang, Yong

Abstract

Laser powder bed fusion (L-PBF) enables the fast fabrication of pure nickel parts with complex structures. Tribological behaviors of the printed pure nickel are crucial to its application, and highly dependent on the volumetric energy density (VED), due to the variation of wear mechanisms. In this study, to investigate the wear mechanisms and evaluate the tribological behaviors of L-PBF pure nickel, samples fabricated with different VEDs were tested by a ball-on-disc tribometer under different representative loads. Unlike tribofilms formed on casting samples during sliding, L-PBF samples suffer abrasive wear, and their wear resistance decreases initially and increases afterwards with increasing VED. It suggests that the preferred VED provide good densification behaviors, high microhardness, and sufficient thin columnar subgrains, which decrease the abrasive wear. As a result, the wear resistance of the preferred L-PBF pure nickel can outperform cast counterparts under a load close to the yield strength of pure nickel.

Citation

Yue, T., Zou, Z., Zhang, S., Xu, Y., & Zang, Y. (2023). Influence of volumetric energy density on the tribological behaviors of pure nickel fabricated by laser powder bed fusion. Virtual and Physical Prototyping, 18(1), Article e2262449. https://doi.org/10.1080/17452759.2023.2262449

• Journal Article Type: Article
• Acceptance Date: Sep 18, 2023
• Online Publication Date: Oct 10, 2023
• Publication Date: Oct 10, 2023
• Deposit Date: Dec 6, 2023
• Publicly Available Date: Dec 6, 2023
• Journal: Virtual and Physical Prototyping
• Print ISSN: 1745-2759
• Electronic ISSN: 1745-2767
• Publisher: Taylor and Francis
• Peer Reviewed: Peer Reviewed
• Volume: 18
• Issue: 1
• Article Number: e2262449
• DOI: https://doi.org/10.1080/17452759.2023.2262449
• Keywords: Industrial and Manufacturing Engineering; Computer Graphics and Computer-Aided Design; Modeling and Simulation; Signal Processing
• Public URL: https://nottingham-repository.worktribe.com/output/26519798
• Publisher URL: https://www.tandfonline.com/doi/full/10.1080/17452759.2023.2262449
• Additional Information: Peer Review Statement: The publishing and review policy for this title is described in its Aims & Scope.; Aim & Scope: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=nvpp20; Received: 2023-06-03; Accepted: 2023-09-18; Published: 2023-10-10