| Download | - View final version: Evaluation of maraging steel produced using hybrid additive/subtractive manufacturing (PDF, 10.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.3390/jmmp5040107 |
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| Author | Search for: Sarafan, Sheida1; Search for: Wanjara, Priti1ORCID identifier: https://orcid.org/0000-0001-7662-984X; Search for: Gholipour, Javad1; Search for: Bernier, Fabrice2ORCID identifier: https://orcid.org/0000-0001-5729-8045; Search for: Osman, Mahmoud1; Search for: Sikan, Fatih1; Search for: Molavi-Zarandi, Marjan2; Search for: Soost, Josh; Search for: Brochu, Mathieu |
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| Affiliation | - National Research Council of Canada. Aerospace
- National Research Council of Canada. Automotive and Surface Transportation
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| Funder | Search for: Natural Sciences and Engineering Research Council of Canada; Search for: Centre Quebecois de recherche et de developpement de l'aluminium |
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| Format | Text, Article |
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| Subject | hybrid manufacturing; laser powder bed fusion; maraging steel; density; surface quality; X-ray micro-computed tomography; microstructure; hardness; tensile properties; fractography |
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| Abstract | Hybrid manufacturing is often used to describe a combination of additive and subtractive processes in the same build envelope. In this research study, hybrid manufacturing of 18Ni-300 maraging steel was investigated using a Matsuura LUMEX Avance-25 system that integrates metal additive manufacturing using laser powder bed fusion (LPBF) processing with high-speed machining. A series of benchmarking coupons were additively printed at four different power levels (160 W, 240 W, 320 W, 380 W) and with the integration of sequential machining passes after every 10 deposited layers, as well as final finishing of selected surfaces. Using non-contact three-dimensional laser scanning, inspection of the final geometry of the 18Ni-300 maraging steel coupons against the computer-aided design (CAD) model indicated the good capability of the Matsuura LUMEX Avance-25 system for net-shape manufacturing. Linear and areal roughness measurements of the surfaces showed average Ra/Sa values of 8.02–14.64 µm for the as-printed walls versus 0.32–0.80 µm for the machined walls/faces. Using Archimedes and helium (He) gas pycnometry methods, the part density was measured to be lowest for coupons produced at 160 W (relative density of 93.3–98.5%) relative to those at high power levels of 240 W to 380 W (relative density of 99.0–99.8%). This finding agreed well with the results of the porosity size distribution determined through X-ray micro-computed tomography (µCT). Evaluation of the static tensile properties indicated that the coupons manufactured at the lowest power of 160 W were ~30% lower in strength, 24% lower in stiffness, and more than 80% lower in ductility relative to higher power conditions (240 W to 380 W) due to the lower density at 160 W. |
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| Publication date | 2021-10-12 |
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| Publisher | MDPI |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | jmmp5040107 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 5e467c16-5eae-45b1-9206-3ea5f716a985 |
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| Record created | 2022-06-08 |
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| Record modified | 2023-02-16 |
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