About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effects of Wall Thickness on Phase Transformations and Hardness of 17–4 PH Stainless Steel Fabricated by Laser Powder Bed Fusion |
| Author(s) |
Chuankai Song, Devyn Duryea, Kyle McGann, Trent LaMont, Sierra Repp, Will Watts, Dave Eames, Mostafa Saber |
| On-Site Speaker (Planned) |
Chuankai Song |
| Abstract Scope |
17–4 PH stainless steel is a high-performance precipitation-hardened alloy valued for its exceptional strength and corrosion resistance, and it is widely processed using Laser Powder Bed Fusion (LPBF) additive manufacturing technology. However, variations in wall thickness influence the thermal history of melt pools during Laser Powder Bed Fusion (LPBF), potentially altering phase transformation behavior and degrading mechanical performance. This study investigated the effects of wall thickness on microstructure and hardness in LPBF-processed 17–4 PH stainless steel. Microstructure analysis was conducted using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and electron backscatter diffraction (EBSD), complemented by hardness testing to evaluate correlations with mechanical properties. This finding addresses concerns regarding geometry-induced mechanical variability associated with wall thickness and enables greater flexibility and innovation in design and fabrication methodologies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Phase Transformations |