About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
The Role of Microstructure on Strength and Fracture Anisotropy Effects in Al-Mg-Si Extrusion Alloys |
Author(s) |
Setareh Kordmir, Nick Parson, Warren J. Poole |
On-Site Speaker (Planned) |
Warren J. Poole |
Abstract Scope |
Aluminum 6xxx extrusion alloys are attractive candidates for use in automotive applications to decrease vehicle weight. In this study, Al-Mg-Si alloys were extruded into 3 x 90mm strips on a pilot scale extrusion press with processing conditions designed to produce either a recrystallized or unrecrystallized microstructure. The grain shape and crystallographic texture were characterized by electron back scatter diffraction (EBSD) and mechanical anisotropy was measured by tensile and VDA bend testing conducted at 0, 45 and 90 degrees to the extrusion direction. It was found that strength and fracture anisotropy were significantly affected by crystallographic texture and the distribution of second phase particles. The results were rationalized using crystal plasticity (visco-plastic self consistent modelling) and considerations for the sequence of damage initiation, void growth and void coalescence. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Mechanical Properties, |