| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
2023 Undergraduate Student Poster Contest
|
| Presentation Title |
Understanding the Evolution of Microstructure and Precipitates in Wire Arc Additive Manufactured Nickel-Aluminum-Bronze Alloy |
| Author(s) |
Elisabeth Kuebel, Aeriel Leonard |
| On-Site Speaker (Planned) |
Elisabeth Kuebel |
| Abstract Scope |
In this study, microstructure of a nickel-aluminum-bronze (NAB: Cu-9Al-5Ni-3Fe-2Mn) alloy in as-rolled and two heat-treated conditions (900 ℃ - 1h and 900 ℃ - 2h) was investigated. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were employed to characterize the morphology and composition of the phases, and electron backscatter diffraction (EBSD) was used to understand the evolution of texture. In as-rolled condition, the microstructure consisted of large, elongated Cu-rich α-phase, Fe-rich globular precipitates (κII), and Ni-rich lamellar (κIII) and small needle-like precipitates (κV). The Ni-rich precipitates formed inside α-grains and in the interdendritic regions whereas the globular Fe-rich precipitates formed mostly in the α boundaries and interdendritic regions, and occasionally inside the α-phase. |