About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
E-4: Depth Dependent Microstructure and Mechanical Properties of Hot Rolled AA 7075 - T651 |
Author(s) |
Damilola Alewi, Paul Rottmann |
On-Site Speaker (Planned) |
Damilola Alewi |
Abstract Scope |
The evolution of the microstructure and mechanical properties of a 32 mm thick hot rolled AA7075 plate specimen in T651 temper condition was investigated with the aim of understanding the qualitative and quantitative contribution of precipitate phases and grain structure. The microstructure is studied quantitatively in detail by a combination of scanning electron microscopy (SEM) and Electron backscatter diffraction (EBSD). Mechanical properties measured with the aid of ex-situ micromechanical and hardness test showed an interesting anisotropic trend in the tensile and yield strength with respect to depth from the surface to the midplane of the specimen. Backscatter SEM analysis of the microstructure showed the preferential nucleation and distribution of η/η’ quench induced precipitates on the grain boundaries, sub grain boundaries and dispersoids because of their high interfacial energy. This study will make it possible to better understand the contribution of these precipitate phases in the mechanical properties’
variability. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Characterization, Mechanical Properties |