Influence of Laser Beam Shaping on Microstructure and Surface Roughness of Haynes 282 Processed by Directed Energy Deposition

Düfert L, Schwarzkopf K, Schmidt M, Kottilingam S, Bartels D (2026)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2026

Publisher: Elsevier B.V.

Book Volume: Procedia CIRP

Pages Range: 669 - 672

Conference Proceedings Title: 143

Event location: Heinrich-Lades-Halle, Erlangen, Deutschland

DOI: 10.1016/j.procir.2026.07.140

Open Access Link: https://doi.org/10.1016/j.procir.2026.07.140

Abstract

Directed Energy Deposition of metals with the laser beam (DED-LB/M) enables near-net-shape fabrication and thereby reduces post-processing steps. The capability to process Ni-based superalloys such as Haynes 282 and Waspalloy makes the technique particularly attractive for aerospace and gas turbine applications. Nevertheless, it is desirable to further improve part properties such as surface roughness, microstructure and associated hardness in order to minimize post-processing. This study investigates the influence of three coherently combined beam profiles (ring, spiral and top-hat) on surface roughness, microstructure, and microhardness. It could be seen that the influence of the used beam profiles on the surface roughness of the side and top surfaces is negligible. Furthermore, the hardness of the samples was more influenced by the processing and boundary conditions than the beam profile. Despite this, a minor influence of the beam profile on the grain structure was observed.

Authors with CRIS profile

Leonie Düfert Institute of Photonic Technologies (LPT) Karen Schwarzkopf Institute of Photonic Technologies (LPT) Michael Schmidt Institute of Photonic Technologies (LPT) Dominic Bartels Institute of Photonic Technologies (LPT)

Involved external institutions

GE Vernova US United States (USA) (US)

How to cite

APA:

Düfert, L., Schwarzkopf, K., Schmidt, M., Kottilingam, S., & Bartels, D. (2026). Influence of Laser Beam Shaping on Microstructure and Surface Roughness of Haynes 282 Processed by Directed Energy Deposition. In 143 (pp. 669 - 672). Heinrich-Lades-Halle, Erlangen, Deutschland: Elsevier B.V..

MLA:

Düfert, Leonie, et al. "Influence of Laser Beam Shaping on Microstructure and Surface Roughness of Haynes 282 Processed by Directed Energy Deposition." Proceedings of the 14th CIRP Conference on Photonic Technologies [LANE 2026], Heinrich-Lades-Halle, Erlangen, Deutschland Elsevier B.V., 2026. 669 - 672.

BibTeX: Download