| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Joining Technologies for Automotive Lightweight Structures
|
| Presentation Title |
Effect of Post-Weld Heat Treatment on Microstructure and Mechanical Properties of Friction Stir Welded AA6061-T6 |
| Author(s) |
Van Cong Phan, Thanh Thuong Do, Hyojoo Lee, Hoon-Hwe Cho, Soumyabrata Basak, Sung-Tae Hong |
| On-Site Speaker (Planned) |
Van Cong Phan |
| Abstract Scope |
The present research investigates the influence of post-weld heat treatment (PWHT) on the mechanical properties of friction stir welded (FSWed) AA6061-T6 aluminum alloy. The microstructure and precipitation studies in the stir zone have been characterized by optical microscopy (OM), scanning electron microscopy (SEM), followed by energy-dispersive spectrometer (EDS) analysis. The tensile strength, microhardness mapping, and fatigue life test results show that the joint has superior mechanical properties after heat treatment than the as-welded condition (no heat treatment). SEM and EDS analyses also confirm that the improvement of mechanical properties is due to the re-precipitation and dispersion strengthening of fine precipitates within the heat-treated FSW joint. |