| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Rapid Qualification
|
| Presentation Title |
Effects of Printer Manufacturer, Contour Pass, Print Angle, Hot Isostatic Pressing, and Surface Texture on the Fatigue Performance of PBF-L/IN-718 |
| Author(s) |
Agustin Diaz, Patrick McFadden |
| On-Site Speaker (Planned) |
Agustin Diaz |
| Abstract Scope |
The intrinsic rich surface texture and internal surface porosity of the as-built laser-based powder bed fusion (PBF-L) technology hamper their potential by compromising the mechanical performance of the manufactured components. In this talk, we will discuss the effect on the fatigue performance of PBF-L/IN-718 printed by four different machine manufacturers, with and without contour pass, and printed at 0°, 45°, and 90° (using support structures when needed). The internal porosity effects on fatigue performance were investigated by testing heat-treated (HT) specimens vs HT + hot isostatic pressing (HIP) specimens. Surface roughness effects on fatigue performance were investigated by comparing the as-built surface condition performance vs. surface-finished specimens at three different levels, Ra ~3.2 μm, Ra ~1.6 μm, and Ra < 0.8 μm. In summary, the synergistic effects of the aforementioned variables were tested by uniaxial tensile load control high-cycle fatigue experiments at room temperature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Surface Modification and Coatings, Mechanical Properties |