| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Evaluation of Hydrogen-Induced Pores in Ni–P-Plated Al–Zn–Mg Alloys Using Synchrotron X-Ray Computed Tomography and Hydrogen Analysis |
| Author(s) |
Keitaro Horikawa, Makoto Hino, Masato Hoshino, Kentaro Uesugi |
| On-Site Speaker (Planned) |
Keitaro Horikawa |
| Abstract Scope |
The internal microstructures of Ni–P-plated Al–Zn–Mg-based alloys were investigated using synchrotron X-ray computed tomography, together with various analytical methods for hydrogen detection. We clarified that hydrogen-induced pores were generated and segregated near the surface of a rolled sheet of a commercial-purity Al–Zn–Mg-based alloy with Ni–P plating. In contrast, such segregation of hydrogen pores was not observed in the high-purity-grade Al–Zn–Mg alloys with Ni–P plating. This result suggests that hydrogen enters the Ni–P plating layer during the plating operation and generates pores in the surface region owing to surface inclusions. Additionally, the hydrogen-induced defects deteriorated the tensile properties such as tensile strength and elongation of the commercial-purity Al–Zn–Mg-based alloys with Ni–P plating. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Surface Modification and Coatings, Environmental Effects |