| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Corrosion Effect on Mechanical Properties of Stamped Al Alloy 6451 for Auto Applications |
| Author(s) |
Mozi Abdul, Wutian Shen, Hongfa Hu |
| On-Site Speaker (Planned) |
Hongfa Hu |
| Abstract Scope |
A stamped Al Alloy 6451 containing 0.75 wt% Si used for outer panels of automotive body closures was tested for mechanical performance by comparing uncorroded and corroded specimens subjected to immersion corrosion following exposure to a 5.5 wt% NaCl saltwater solution. The mechanical properties including ultimate tensile strength (UTS), yield strength (YS) and elongation (ef) were evaluated by tensile testing. Following the exposure to a 5.5 wt% NaCl saltwater solution, the stamped alloy 6451 exhibited a significant decrease of both its UTS and YS to 141.82 and 70.02 MPa from 161.54 and 86.82 MPa, by 12.2% and 19.4%, respectively. Similarly, the ef of the Al alloy decreased to 14.62% from 16.23% by 9.9%. The preliminary microstructure observation indicated that the presence of corrosion pits on the surface of the corroded alloy might promote the crack initiation and growth. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Mechanical Properties, Characterization |