| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
|
| Presentation Title |
Maraging Steels with Enhanced Strength-Ductility Synergy via Additive Manufacturing |
| Author(s) |
Wuxian Yang, Wen Chen |
| On-Site Speaker (Planned) |
Wuxian Yang |
| Abstract Scope |
Maraging steels are known for their exceptional strength but suffer from limited work hardening and ductility, leading to potential cracking issues during fabrication via Laser Powder Bed Fusion (L-PBF). Here, we report an additively manufactured maraging steel hardened by nano-sized β-NiAl precipitates. The printed maraging steel exhibits a good combination of high strength, ductility, and printability. Post-heat treatment allows for precise control over the trade-off between strength and ductility. Due to the highly refined martensitic lath microstructure, high-density dislocations, and uniformly distributed nano-sized precipitates, the maraging steel shows an impressive ultimate tensile strength exceeding 1900 MPa with an approximately 7% total elongation. In situ synchrotron X-ray diffraction and high-resolution transmission electron microscopy reveal the mechanistic origin of the exceptional mechanical properties. This work advances the development of high strength yet ductile steels by additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Iron and Steel |