| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Cyclic Material Behavior of Additively Manufactured Inconel 718 Produced Under Different Oxygen Concentrations |
| Author(s) |
Matilde Scurria, Benjamin Möller, Rainer Wagener, Thilo Bein, Kai Dietrich, Dominik Bauer |
| On-Site Speaker (Planned) |
Matilde Scurria |
| Abstract Scope |
Additive Manufacturing technologies are drawing the attention of the industry, also regarding the production of safety critical parts. However, the quality control is still challenging, since the products properties are strictly connected to the process parameters used during the powder deposition. In this work, the effect of different oxygen contents during the laser powder bed fusion of Inconel®718 powder is investigated. Flat specimens with 50 mm length have been produced with different orientations with respect to the powder bed in a controlled atmosphere. In particular, three batches of specimens have been produced under three different oxygen concentrations (0 ppm, 500 ppm and 1000 ppm). The specimens have been tested by means of strain-controlled testing under variable amplitude loading, called Incremental Step Tests (IST). The results are used for the evaluation and comparison of the cyclic stress-strain behavior. Finally, the cyclic material properties are analyzed with the help of metallographic investigations. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |