| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Corrosion and Mechanical Characterization of Friction-stir Welded Joints between Aluminum and Magnesium Alloys |
| Author(s) |
Qingli Ding, Kübra Karayagiz, Brajendra Mishra, Adam C Powell, Donovan Leonard |
| On-Site Speaker (Planned) |
Qingli Ding |
| Abstract Scope |
Cyclic Corrosion Test (CCT) is now considered a more reliable and realistic test for automotive applications than the traditional steady-exposure methods, such as the salt spray test. Several automotive companies have established their own testing protocol for CCT. In this project, under certain uncoated conditions that represent the worst-case scenario for coupled bimetallic, following the SAE J2334 standards, we are conducting the CCT method on the next generation Friction Stir Welding Magnesium-Aluminum Vehicle Joints. For certain applications, such as the Stellantis-Magna ultra-light door, subassemblies using these alloys are up to 50% lighter than those using conventional steel-based alloys. The electrochemical analyses of corrosion rate by Open Circuit Potential (OCP) and Linear Polarization Resistance (LPR) have been performed. Scanning Electron Microscopy (SEM) characterization of the surface change during corrosion and the mechanical properties including Microindentation Hardness Mapping and Lap Shear Strength have been conducted. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Magnesium, Joining |