| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Combinatorial Studies of Stress Corrosion Sensitivity of Alloy Films |
| Author(s) |
Kewei Gao, Youpeng Song |
| On-Site Speaker (Planned) |
Kewei Gao |
| Abstract Scope |
Corrosion product film-induced stress plays an important role in corrosion and stress corrosion cracking of metallic materials. Previous studies proved that the greater film-induced stress is, the more sensitive the stress corrosion is. In this work, the Cu-Cr alloy films with a broad compositional range were deposited onto a silicon substrate with micromachined cantilever arrays by using a magnetron co-sputtering technique. Film-induced stress formed after immersion in Mattsson's solution caused the beams to bend. The deflection of the beams was continuously measured by white light interference. The results show that the change of cantilever deflection becomes more and more obvious with the increase of Cr content, that is, stress corrosion is more sensitive. The electrochemical performance of Cu-Cr alloy films was also characterized by wire beam electrode, and the results have a good agreement. This high-throughput experimental method is also applicable to other alloy film systems. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |