| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IV
|
| Presentation Title |
F-24: Role of Surface Mechanical Attritions Processing Conditions on the Corrosion Behavior of Aluminum 7075 Alloys |
| Author(s) |
Vikrant Kumar Beura, Kiran Solanki |
| On-Site Speaker (Planned) |
Vikrant Kumar Beura |
| Abstract Scope |
In this work, a gradient nano-grained layer was induced on the aluminum 7075 alloys by surface mechanical attrition treatment (SMAT). Microstructure variations through SMAT processing were characterized through X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. A gradient nano-grain layer with precipitation of the Al-Cu-Si phases has been observed near the SMAT surface. In addition, the surface close to the SMAT layer was also found to be deprived of inherent Mg2Si and Al7Cu2Fe phases. The potentiodynamic polarization showed a decrease in anodic and cathodic reaction rates through the SMAT processing. Furthermore, the electrochemical impedance spectroscopy (EIS) demonstrated a stable and coherent oxide layer on the SMAT surface. The oxide layer and corrosion film formed on the surface were further analyzed through various surface spectroscopy techniques such as X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (ToF-SIMS). |
| Proceedings Inclusion? |
Planned: |