| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Mechanisms and Mitigation of Aqueous Corrosion and High-temperature Oxidation
|
| Presentation Title |
Laser Shock Peening Effect on 5xxx Sensitization and Exfoliation of 5XXX series Aluminum Alloys |
| Author(s) |
Saba N. Esmaeely, Allison Akman, Gabriella Marino, Jenifer Locke |
| On-Site Speaker (Planned) |
Jenifer Locke |
| Abstract Scope |
Laser shock peening (LSP), has been shown useful in mitigating corrosion degradation in some materials. As the laser pulse interacts with the water and opaque layer, a plasma is produced. Shock waves are generated as a result of the plasma being confined in water, which causes plastic deformation and compressive residual stresses on the alloy surface. It is generally thought that the LSP induced compressive residual stress affect the formation and growth of the passive film and local surface chemistry concentrations just below the surface to improve the corrosion resistance. In recent years, LSP research has investigated different aluminum alloys; however, the focus has revolved around improvements in corrosion resistance, fatigue life, mechanical performance, while the effect on 5xxx series sensitization remains uncertain. The current study aims at investigating how effectively LSP mitigates exfoliation and corrosion in sensitized Al-Mg Al alloys and if this effectiveness varies with product thickness. |