| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Marine Materials and Structures
|
| Presentation Title |
Study of Nb-Rich Precipitate Evolution During Post-Build Heat Treatment of Additively Manufactured Cu-30Ni and Its Influence on Mechanical Properties |
| Author(s) |
Debasis Rath, Markus Chmielus, Zachary Daniel Harris |
| On-Site Speaker (Planned) |
Debasis Rath |
| Abstract Scope |
Cu-30Ni is widely employed for marine application due to its excellent corrosion resistance in seawater, but the conventional casting supply chain face challenges with long lead times, which has motivated interest in using additive manufacturing (AM) to expedient component production. To meet strength requirements of Cu-30Ni, Nb is often added to AM Cu-30Ni feedstock, which results in the precipitation of Nb-rich phase during ageing of AM Cu-30Ni. However, fundamental understanding of the kinetics associated with this precipitation and the subsequent impact on alloy strength is limited for AM Cu-30Ni. In this study, a detailed evaluation of these precipitates is performed for Cu-30Ni fabricated via laser powder bed fusion over a broad range of aging temperatures and times. Through microhardness testing and transmission electron microscopy (TEM), precipitation kinetics and effect on mechanical properties are quantified, providing critical insights that can be leveraged to inform optimal post-build heat treatments for AM Cu-30Ni. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |