| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Effect on hydrogen trapping in laser welded advanced high strength steels |
| Author(s) |
Madyson G. Canulette, Gregory B. Thompson, Luke N. Brewer |
| On-Site Speaker (Planned) |
Madyson G. Canulette |
| Abstract Scope |
This presentation will elucidate the hydrogen trapping capability and the hydrogen diffusivity in laser welded AHSS. Advanced high strength steels (AHSS) are used in the automotive industry to reduce the weight of the car body without compromising structural integrity. During manufacturing, the vehicle frame design is constructed by joining the AHSS sheets via laser welding, which presents a risk of hydrogen embrittlement. Heat affected zone (HAZ) thermal cycles were simulated via a Gleeble thermomechanical system on a fully-martensitic and a TRIP-assisted steel to obtain the microstructures formed at certain distances from the weld center. To assess the hydrogen spatial distribution, atom probe tomography was conducted on a series of specimens which were extracted from the HAZ thermal cycle specimens and were electrolytically charged in a deuterium-containing, aqueous solution. The hydrogen embrittlement behavior was further investigated by using hydrogen permeation experiments to understand the hydrogen diffusivity and solubility in the AHSSs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Joining |