Abstract
Martensitic hardenable (maraging) stainless steels are of interest due to their combination of high strength and ductility along with superior corrosion and stress corrosion cracking properties. Corrax maraging steel has been recently atomized in powder form for laser-based sintering applications . In the current study, Corrax with a nominal composition of 11–13% Cr, 8.4–10% Ni, 1.1–1.7% Mo, 1.2–2% Al and 0.05% C (in wt%) was additively manufactured through direct metal laser sintering (DMLS) process. This additive manufacturing technique results in ultrafine microstructures with unique micron and submicron characteristics. The microstructure of the as-built DMLS -Corrax was investigated using SEM, EBSD , and TEM . The result of the current study is the preliminary step to develop additively manufactured high strength Corrax stainless steels for various applications .
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Acknowledgements
The authors would like to acknowledge Natural Sciences and Engineering Research Council of Canada (NSERC) project number RGPIN-2016–04221 and New Brunswick Innovation Foundation project number (NBIF)-RIF2017–071 for the financial support of this work. The authors would also like to acknowledge Dr. Mark Kozdras at CanmetMATERIALS for facilitating the research and Pei Liu for TEM sample preparations.
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Hadadzadeh, A., Amirkhiz, B.S., Li, J., Mohammadi, M. (2019). Microstructure Evolution in Direct Metal Laser Sintered Corrax Maraging Stainless Steel. In: TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05861-6_42
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DOI: https://doi.org/10.1007/978-3-030-05861-6_42
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