| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Marine Materials and Structures
|
| Presentation Title |
Additive Friction Surfacing of High-Strength Low-Alloy Steel |
| Author(s) |
Tianhao Wang, David Garcia, Zehao Li, Mayur Pole, Tingkun Liu, Uchechi Okeke, Mackenzie Perry, Christopher Smith, Kenneth Ross |
| On-Site Speaker (Planned) |
Tianhao Wang |
| Abstract Scope |
Fusion-based additive manufacturing (AM) technologies, such as wire arc, laser powder bed, selective laser melting, and electron beam, enable intricate designs but face challenges when applied to steel fabrications. These challenges include residual stress, microstructure anisotropy, porosity, chemical composition segregation, and vaporization of alloying elements. Solid-phase AM technologies, operating below melting points, significantly mitigate these issues. Notable methods include ultrasonic, cold spray, and friction-based AM, with additive friction surfacing (AFS) standing out by eliminating the need for costly tooling. This study demonstrates the first use of AFS to produce high-strength low-alloy (HSLA) steel depositions. The microstructural evolution is explored as the tempered martensite condition of the feedstock transitions to a freshly deposited martensitic layer after AFS. As AFS progresses, the previously deposited martensitic layer undergoes post-deposition tempering and phase transformation into tempered martensite, bainite, ferrite, or a combination of these phases. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Characterization |