About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
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Presentation Title |
Capturing the Effect of a Novel Inoculant on the Microstructure and Mechanical Properties in a Stainless Steel 316L Alloy Produced by Laser Powder Bed Fusion |
Author(s) |
Aakifa Farooq, Sam Tammas-Williams, Arunabhiram Chutia, Nghia Vo, Peter Lee, Mohammed Abdul Azeem, Peter Lee, Mohammed Abdul Azeem |
On-Site Speaker (Planned) |
Aakifa Farooq |
Abstract Scope |
Corrosion resistance is crucial in the fast-evolving world of bespoke components produced by laser powder bed fusion melting (PBF). In case of high alloy Fe systems such as stainless steels (SS) it was initially thought that the PBF will help in grain refinement due to fast cooling rates. However, massive grains are observed in SS processed via PBF. Here we have identified a novel inoculant and a processing pathway to incorporate the inoculant in SS powders which are then used in PBF. Various inoculant weight fractions have been examined and their effect on microstructure and mechanical properties is assessed. Formation of defects is examined and quantified using X-ray CT. Extensive EBSD analysis has been performed and correlated with the CT data before and after mechanical deformation. The results demonstrate that the inoculant alters the solidification pathways which has a direct impact on the grain refinement in 316L stainless steel alloy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Powder Materials, Iron and Steel |