| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
X-ray Computed Tomography of Fracture Paths in AA7075-T6 Sheet Torn at 200 °C |
| Author(s) |
Daniel Nikolai, Philip Noell, Eric M. Taleff |
| On-Site Speaker (Planned) |
Daniel Nikolai |
| Abstract Scope |
X-ray computed tomography (XRCT) was used to characterize fracture paths in AA7075-T6 sheet subjected to ductile tearing at a warm temperature. Tear tests were conducted at 200 °C and a pulling rate of 64 mm/min until the crack tip was approximately half way through the specimen. Three dimensional XRCT data sets were acquired near each crack tip to map the crack, nearby porosity, and intermetallic particles. The XRCT data were analyzed using modern software techniques to segment out each of the important features. The spatial relationships between these features and their anisometry suggest microstructural causes for the anisotropy of tearing resistance measured at warm temperatures; tearing resistance is lower along the sheet rolling direction than it is along the long transverse direction. These connections will be discussed, and methods for improving tearing resistance will be proposed. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, |