About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing: Advanced Characterization With Synchrotron, Neutron, and In Situ Laboratory-scale Techniques IV
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| Presentation Title |
Microstructural Evolution and Property Optimization in DED of M2 Tool Steel: A Comparative Assessment with Binder Jetting and Powder Bed Fusion |
| Author(s) |
Amit Choudhari, Tushar Borkar, Sanoj Karki, Sambhaji Kusekar, Satyavan Digole |
| On-Site Speaker (Planned) |
Amit Choudhari |
| Abstract Scope |
M2 tool steel, renowned for its superior hardness and wear resistance, presents unique opportunities and challenges in additive manufacturing. This study focuses on optimizing printing parameters as well as microstructural evolution during Direct Energy Deposition (DED) and hot-isostatic pressing (HIP) as post-processing methods. A systematic investigation was conducted to evaluate the influence of critical DED printing parameters on densification behavior, microstructure, and phase evolution. Post-process characterization revealed carbide precipitation (MC and M₆C carbides) driven by thermal gradients and solidification dynamics. SEM, EDS, XRD, TEM, microhardness, tensile strength, and tribological performance were evaluated to establish structure-property relationships. To provide a broader context, the DED-fabricated M2-tool-steel samples were benchmarked against counterparts produced via binder jetting, followed by HIP and powder bed fusion, highlighting differences in grain morphology, carbide network distribution, and porosity. This talk will also discuss the in-lab defect detection and mitigation strategy used during printing to achieve better mechanical integrity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |