Experimental Investigation on End Milling Behavior of Additively and Conventionally Manufactured 18Ni300 Maraging Steel

DOI

10.2991/978-94-6463-662-8_42How to use a DOI?

Keywords

Additive manufacturing; Build orientation; 18Ni300 maraging steel; Aging heat treatment; End milling

Abstract

Additive manufacturing has made it possible to design and print complex geometric components that could not be achieved with traditional manufacturing methods. With the current limitations in optimizing the surface topography of printed parts, efficient cutting process parameters are essential for optimal post-processing of additively manufactured components. This experimental study investigated the relationship of end milling parameters with surface quality in view of varying metallurgical conditions with respect to manufacturing methods, besides specifically investigating build orientation and sample condition (aging heat treatment) effects on the machinability of additively manufactured 18Ni300 maraging steel. Key findings reveal that surface roughness is significantly influenced by feed rate, depth of cut, and cutting speed, with marked differences between additively and conventionally manufactured specimens. Additively manufactured components displayed lower surface quality at a 90-degree build orientation, while the best surface finish was achieved on directly aged conventional specimens at 0.089 µm, compared to 0.476 µm in as-printed AM samples. Aging heat treatment also impacted surface characteristics, as observed through optical microscopy, with aged samples showing prominent feed lines. Additionally, pre-existing defects in additively manufactured specimens suggest potential impacts on surface integrity and performance. These findings highlight the importance of optimizing milling parameters for maraging steel, especially for additive manufacturing, to enhance surface quality across varying build orientations and heat treatment conditions.Moreover, machining characteristics are affected owing to the anisotropy induced in AM-produced components.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Syed Sohail
AU  - B. Chandra Mohan Reddy
PY  - 2025
DA  - 2025/03/17
TI  - Experimental Investigation on End Milling Behavior of Additively and Conventionally Manufactured 18Ni300 Maraging Steel
BT  - Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)
PB  - Atlantis Press
SP  - 525
EP  - 542
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-662-8_42
DO  - 10.2991/978-94-6463-662-8_42
ID  - Sohail2025
ER  -