| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Microstructure, Defects, and Properties
|
| Presentation Title |
Influence of Interface Design on the Cyclic Oxidation Behavior of SS316L/IN718 Functionally Graded Materials |
| Author(s) |
Mustafa Kas, Oguzhan Yılmaz, Wei Xiong |
| On-Site Speaker (Planned) |
Mustafa Kas |
| Abstract Scope |
Functionally graded materials (FGMs) offer tailored property gradients, and additive manufacturing enables their precise fabrication. This study investigates the cyclic oxidation behavior at 850°C of SS316L/IN718 FGMs produced via Directed Energy Deposition (DED), comparing sharp and graded interfaces with a 10 wt.% composition gradient step. Mass gain and microscopic analyses reveal superior oxidation resistance of graded interfaces. Sharp interfaces exhibit obvious spallation, rapid material consumption, and early grain boundary oxidation, likely due to abrupt property changes. Conversely, graded interfaces demonstrate smoother transitions, mitigating these detrimental effects. This research highlights the significance of interface design on the high-temperature performance of FGMs. It also emphasizes the potential of graded interfaces for enhanced oxidation resistance. |