A Parametric Study of Laser-Directed Energy Deposited DSS 2205: Microstructure and Mechanical Properties Perspectives
Journal
JOM
ISSN
1047-4838
Publisher
Springer Science and Business Media LLC
Date Issued
2025
Author(s)
Mahey, Vishal
Johnson, Grant A.
Burad, Prayag
Quintana, Maria J.
Collins, Peter C.
Roy, Sougata
Type
text::journal::journal article
Abstract
Duplex stainless steels (DSS) are corrosion-resistant materials with excellent mechanical properties. This family of steels is only a recent addition to the additive manufacturing (AM) realm due to the limited availability of DSS powder in the past. This study has investigated the effect of varying energy flux (laser power and scanning speed) in a laser-based directed energy deposition AM process on the as-deposited materials state of DSS 2205, a material widely used in marine applications. The primary focus was to understand how changes in laser power (200 W and 300 W) and scanning speed (10 mm/s and 15 mm/s) influence key microstructural features such as phase distribution (δ-ferrite and γ-austenite), grain size, morphology, defects, and microhardness of the as-deposited material. Microstructural analysis revealed a significant correlation between the processing parameters and the resulting microstructure. Increasing the scanning speed reduces the defect content in the samples, while increasing laser power results in larger δ-ferrite grains. The hardness was influenced by both the γ-austenite content and the δ-ferrite grain size. This study provides a pathway for tailoring directed energy deposition (DED) conditions to achieve high-quality and dimensionally accurate components, particularly suited for demanding marine applications. ©The authors ©Springer ©JOM.
License
Acceso Abierto
How to cite
Mahey, V., Johnson, G. A., Burad, P., Gonzalez-Ojeda, R., Quintana, M. J., Collins, P. C., & Roy, S. (2025). A Parametric Study of Laser-Directed Energy Deposited DSS 2205: Microstructure and Mechanical Properties Perspectives. JOM. https://doi.org/10.1007/s11837-025-07282-6