| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Microstructure, Defects, and Properties
|
| Presentation Title |
Influence of Post-Build Heat Treatment on Microstructure and Stress Corrosion Cracking (SCC) Performance of Additively Manufactured Cu-30Ni |
| 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. However, there is currently limited understanding of the process-structure-property relationships for AM Cu-30Ni, particularly with respect to corrosion and stress corrosion cracking (SCC) performance. In this study, the evolution in alloy microstructure and SCC behavior of Cu-30Ni fabricated via laser powder bed fusion (LPBF) is evaluated as a function of post-build annealing treatment. Rising stress intensity fracture mechanics experiments are performed in 0.6 M NaCl, which reveal a strong influence of annealing treatment on alloy performance. Differences in SCC behavior are evaluated in the context of observed microstructural variations; insights from this evaluation will be used to inform targeted build and post-build processing parameter modifications. |