Abstract
Direct energy deposition Inconel 718 is increasingly explored and used for various industrial applications due to its near net shape and ability to build complex geometries. For post-processing, hammer peening process is a well-established surface finishing step to enhance the compressive stress of the metal, reducing and preventing cracks. Increasingly, laser has been explored for post-processing additive manufactured metal as an in-situ heat treatment process to relieve tensile stresses formed during the process. In this paper, an investigation into the effects of hammer peening in conjunction with laser is performed. Microstructural analysis, hardness values and tribological properties will be used to observe these effects. It was found that hammer peening increased the hardness of Inconel 718, and when used in tandem with laser, the hardness decreased, albeit higher than the non-post processed sample. Lastly, there is a disconnect between the correlation of higher hardness values with lower wear rate, as the lowest hardness value sample has the lowest wear rate in this study, and that hammer peening itself did not reduce the wear rate of direct energy deposited Inconel 718.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Sui S, Li H, Li Z et al (2022) Introduction of a new method for regulating laves phases in Inconel 718 Superalloy during a laser-repairing process. Engineering 16:239–246. https://doi.org/10.1016/j.eng.2021.08.030
Amanov A, Karimbaev R, Li C, Wahab MA (2023) Effect of surface modification technology on mechanical properties and dry fretting wear behavior of Inconel 718 alloy fabricated by laser powder-based direct energy deposition. Surf Coat Technol 454. https://doi.org/10.1016/j.surfcoat.2022.129175
Karabulut Y, Tascioglu E, Kaynak Y (2021) Heat treatment temperature-induced microstructure, microhardness and wear resistance of Inconel 718 produced by selective laser melting additive manufacturing. Optik (Stuttg) 227. https://doi.org/10.1016/j.ijleo.2019.163907
Joshy J, Kuriachen B (2023) Effect of heat treatment and cryo-treatment on dry tribological behavior of Inconel 718 fabricated using laser powder bed fusion. Wear. https://doi.org/10.1016/j.wear.2023.204819
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Tham, N.Y.S., Hao, Z. (2024). Surface Enhancements from Peening Effect on Inconel 718 Fabricated by Direct Energy Deposition. In: Maharjan, N., He, W. (eds) Proceedings of the 3rd International Conference on Advanced Surface Enhancement (INCASE) 2023. INCASE 2023. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-8643-9_5
Download citation
DOI: https://doi.org/10.1007/978-981-99-8643-9_5
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-8642-2
Online ISBN: 978-981-99-8643-9
eBook Packages: EngineeringEngineering (R0)