| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Heterogenic Interface Stability of Multiple Alloy Systems by Additive Manufacturing and Sintering Process |
| Author(s) |
Seong Gyu Chung, Omer Cakmak, Seung Hoon Lee, Jung Wook Cho, Kumar Sridharan, Hwasung Yeom |
| On-Site Speaker (Planned) |
Seong Gyu Chung |
| Abstract Scope |
Bonding between dissimilar metal is used widely throughout the industry, and in particular, Functionally Graded Material (FGM) is a composite material of two different alloy compositions, and microstructure changes progressively, resulting in a corresponding variation of properties. Austenitic 316L and Inconel 718 joint has high strength, ideal corrosion resistance at high temperature which makes suitable position to serve harsh condition such as nuclear power plants and oil refineries. However, this artificial joint between nickel based super alloy and austenitic stainless steel forms brittle intermetallic phases which propagates cracks and defects at the interface. Therefore, this study will present the achievement of stable bonding interface between dissimilar metals through additive manufacturing and sintering processes, and achievement of stable joint by processing under N2 atmosphere with denser microstructure and residual density, rather than conventional bonding from brazing and casting. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Solidification |