About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Alleviate Hot Cracking for Nickel-based Superalloys in Additive Manufacturing |
Author(s) |
Zhongji Sun, Yan Ma, Dirk Ponge, Stefan Zaefferer, Eric A. Jägle, Baptiste Gault, Anthony D. Rollett, Dierk R. Raabe |
On-Site Speaker (Planned) |
Zhongji Sun |
Abstract Scope |
Nickel-based superalloy is an indispensable alloy group for high-temperature applications. However, most of the nickel-based superalloys suffer from solidification/hot cracking during the additive manufacturing process. Aided by the near-atomic scale characterisation through atom probe tomography, the elemental partitioning information during solidification was successfully captured. Subsequent interpretation using thermodynamic Calphad calculations shedded light on the origin of cracking for this material class. Effects of individual element towards hot cracking are quantified using a commercial IN738LC alloy as an example. Solutions to the hot cracking issue in nickel-based superalloys are then conceptualised and validated. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Solidification |