| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-111: Influence of Microstructure on Fatigue Behavior of Additively Manufactured Nickel Aluminum Bronze |
| Author(s) |
Nathan Heniken, Jiashi Miao, Veronika Mazanova, Aeriel Murphy-Leonard |
| On-Site Speaker (Planned) |
Nathan Heniken |
| Abstract Scope |
The role of microstructure and precipitation in the deformation and damage behavior of wire-arc additively manufactured (WAAM) nickel-aluminum bronze (NAB) alloys was investigated. NAB is known for its microstructural complexity and the ability to form various κ-phase particles during processing and heat treatment. To study these effects, flat dog bone and compact-tension specimens were machined from WAAM bars and tested under monotonic tension as well as load-controlled tension-compression and tension-tension cyclic loading. A combination of advanced characterization techniques, including scanning and transmission electron microscopy (SEM/TEM), electron backscatter diffraction (EBSD), and electron channeling contrast imaging (ECCI), was used to analyze dislocation behavior. Testing incorporated both in-SEM and ex-situ loading to reveal how deformation mechanisms evolve. Persistent slip bands formed across grains due to planar dislocation slip, which was observed under all loading conditions. Cyclic loading, in contrast, led to cross-slip in some grains, offering valuable insights into fatigue processes. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |