| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
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| Presentation Title |
Heat Treatment of QT 17-4+ Steel: Impacts on Microstructure, Mechanical Properties, and Corrosion Resistance |
| Author(s) |
Abheepsit Raturi, Vyas Mani Sharma, Eyal Sabatani, Vladimir Popov, Amir R Farkoosh, Dieter Isheim, Amir Natan, David Seidman, Noam Eliaz |
| On-Site Speaker (Planned) |
Abheepsit Raturi |
| Abstract Scope |
Additive manufacturing (AM) builds complex shapes in one piece, offering advantages like customization, design flexibility, and reduced material waste compared to traditional methods. QT17-4+, a new steel developed by QuesTek® Innovations LLC, is designed using Integrated Computational Materials Engineering (ICME) for AM techniques like selective laser melting (SLM) and directed energy deposition (DED) to enhance grain boundary (GB) cohesion. In its as-built condition, QT17-4+ processed by DED consists of 99.9% martensite and 0.09% austenite, with a high yield strength of 757±14 MPa and excellent corrosion resistance (corrosion current density of 0.121 µA/cm² in a borate buffer solution with 0.28M NaCl). However, the alloy shows limited ductility of 4-5 % elongation in its as-printed state. Therefore, QT17-4+ alloy is heat treated at 750 and 850 °C for 90 and 180 minutes to explore the effects on the microstructure (grain size and martensite lath size), yield strength, ductility and corrosion resistance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Iron and Steel |