| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XII
|
| Presentation Title |
Effect of Friction Stir Processing on the Microstructure and Mechanical Properties of Thick Al-6061 Alloy |
| Author(s) |
Amlan Kar, Eric J. Pickron, Todd Curtis, Bharat K. Jasthi, Grant A. Crawford |
| On-Site Speaker (Planned) |
Amlan Kar |
| Abstract Scope |
This paper highlights the influence of severe thermomechanical processing conditions on fabricating a high-strength and tough, 12 mm thick aluminum alloy (Al 6061-T6). An optimum thermomechanical condition using friction stir processing (FSP) technology produces a material with better tensile properties and a five-time increase in toughness. A detailed characterization reveals the evolution of refined microstructure with a good distribution of second-phase particles. The mechanism of microstructure evolution of aluminium is characterized as continuous dynamic recrystallization. Grain size and microhardness variation from the surface to the bottom of the processed zone is examined and correlated with processing conditions to identify the mechanisms of microstructural evolution. The improved tensile strength and toughness of the processed zone are attributed to lower heat input, grain refinement and location of fracture during testing of the developed material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Aluminum |