| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Rapid Qualification
|
| Presentation Title |
Comprehensive Fatigue Evaluation via Multiple Testing Methods and Loading Conditions on an LPBF F357 Alloy Processed by HIP with Rapid Quench Treatment |
| Author(s) |
Marcus C. Lam, Ariel Rieffer, Carla Colon Cruz, Samuel Andrews, Alexis Loustaunau, Andrew Wessman, Sammy Tin |
| On-Site Speaker (Planned) |
Marcus C. Lam |
| Abstract Scope |
This presentation introduces a comprehensive study on the fatigue performance of an LPBF aluminum alloy F357 subjected to hot isostatic pressing (HIP) followed immediately by a rapid quench. Utilizing axial, rotational bending, and ultrasonic fatigue tests across a frequency spectrum of 10Hz to 20kHz, the research systematically investigated the influence of loading factors, including various stress levels and ratios. Another focus of this study is the impact of the HIP and rapid quench process, which eliminated most LPBF pores and refined the microstructural features. The microstructural analysis emphasizes establishing the relationships between grain structure, phase distributions, and fatigue performance via an in-depth examination of fracture surfaces at various stages of fatigue, from crack initiation to fast fracture. The research findings can offer valuable insights into methods and standardizations for accelerating the qualification of fatigue performance in LPBF alloys, especially in demanding aerospace applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |