| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Evaluation of the Effects of Machining Methods on Fatigue Life and Surface Quality of L-PBF Ti-6Al-4V Parts |
| Author(s) |
Cristian Banuelos, Shadman Tahsin Nabil, Diego Ariza, Edel Arrieta, Ryan Wicker, Francisco Medina |
| On-Site Speaker (Planned) |
Cristian Banuelos |
| Abstract Scope |
This paper explores the impact of various surface finishing techniques on the flexural fatigue life of L-PBF Ti-6Al-4V components. It analyzes four standard machining methods to evaluate their effects on surface roughness, measured using contact and non-contact techniques. A modified 4-point bending fatigue test was conducted on the specimens at four maximum stress levels. Detailed fractography was employed to investigate the fracture surfaces and identify the failure mechanisms. Microhardness tests on the specimen surfaces were also performed, with results compared against fatigue performance. The findings indicate that while machining improves the fatigue endurance of L-PBF Ti-6Al-4V parts compared to as-built ones, improved surface quality in machined parts does not necessarily correlate with better fatigue performance. The opposite was observed, potentially due to work hardening that affects the mechanical properties of the specimens. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |