About this Abstract |
| Meeting |
11th International Symposium on Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
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| Symposium
|
Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
|
| Presentation Title |
Impact of Composition and Process History on the Microstructure and Mechanical Behavior of L-PBF Alloy 625 |
| Author(s) |
Karen Henry, Tressa White, Robert Morris, Stephen Sabol, Steven Attanasio, Matthew Rowson, Jonathan Hendry |
| On-Site Speaker (Planned) |
Karen Henry |
| Abstract Scope |
The basis for this study is to understand the effect of chemical composition and process history on the resulting microstructure and properties of Alloy 625 (A625) manufactured via laser powder bed fusion (L-PBF). While many previous studies have been completed on wrought material with this same premise, the use of A625 powders in additive manufacturing (AM) has renewed these efforts since there are differences in microstructural features. Nano-scale secondary precipitates such as aluminum-rich oxides and titanium-rich nitrides are frequently observed throughout the AM microstructure. Previous studies have demonstrated various properties of wrought A625 can be optimized by a tighter control of alloy chemistry and processing steps. As such, the same optimization of properties and microstructure can be achieved in AM by understanding the relationship to alloy chemistry and process history. As is typical with making any compositional adjustments, one compositional change that is helpful for a particular property may be deleterious for another property. The trade-offs of adjusting alloy composition and heat treatment will be presented in this review. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |