Abstract
A new testing methodology was developed to quantitively study galvanic corrosion of AZ31B and thermoset carbon-fiber–reinforced polymer spot-joined by a friction self-piercing riveting process. Pre-defined areas of AZ31B in the joint were exposed in 0.1 M NaCl solution over time. Massive galvanic corrosion of AZ31B was observed as exposure time increased. The measured volume loss was converted into corrosion current that was at least 48 times greater than the corrosion current of AZ31B without galvanic coupling. Ninety percent of the mechanical joint integrity was retained for corroded F-SPR joints to 200 h and then decreased because of the massive volume loss of AZ31B.
| Original language | English |
|---|---|
| Pages (from-to) | 400-410 |
| Number of pages | 11 |
| Journal | Journal of Magnesium and Alloys |
| Volume | 10 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2022 |
Funding
This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the USDepartment of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This research was financially sponsored by the US Department Energy Vehicle Technologies Office, as part of the Joining Core Program. Oak Ridge National Laboratory (ORNL) is managed by UT-Battelle LLC for the US Department of Energy under Contract DE-AC05-00OR22725 . The authors would like to thank Donald Erdman III and Rick R. Lowden for their help in the mechanical testing laboratory. This research was financially sponsored by the US Department Energy Vehicle Technologies Office, as part of the Joining Core Program. Oak Ridge National Laboratory (ORNL) is managed by UT-Battelle LLC for the US Department of Energy under Contract DE-AC05-00OR22725. The authors would like to thank Donald Erdman III and Rick R. Lowden for their help in the mechanical testing laboratory.
Keywords
- AZ31B
- Carbon fiber–reinforced polymer
- Friction self-piercing riveting
- Galvanic corrosion
- Mechanical joint strength
- Multi-material joining