| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Evolution of the Texture and Variant Selection during Beta to Alpha Transformation in Wire Arc Additive Manufactured Nickel Aluminum Bronze |
| Author(s) |
Dillon Watring, David Rowenhorst, Richard Fonda |
| On-Site Speaker (Planned) |
Dillon Watring |
| Abstract Scope |
Wire arc additive manufacturing (WAAM) has become an increasingly popular form of additive manufacturing (AM) for applications of large metal components due to the high deposition rate and low equipment costs compared to other metal AM techniques. Nickel aluminum bronze (NAB) is an alloy that has been valued in marine applications for its high strength, corrosion resistance, and cavitation resistance. NAB transforms from a coarse high-temperature body centered cubic (bcc) beta phase into a fine, face centered cubic (fcc) alpha phase with various kappa precipitates. This phase transformation occurs according to an orientation relationship, which produces a number of possible alpha variants for a given beta orientation. Variant selection, the preferential selection of variants, drives the final crystallographic textures, which impacts the fatigue and corrosion behavior. This work focuses on understanding this variant selection in WAAM NAB as a function of processing parameters. |