| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Effect of Sensitization on Corrosion and Fatigue Response of AA5086 Weld Joints |
| Author(s) |
Rajneesh Jaisawal, Vidit Gaur |
| On-Site Speaker (Planned) |
Rajneesh Jaisawal |
| Abstract Scope |
The present study deals with the investigation of sensitization on corrosion and fatigue response of friction stir weld joints of naval grade AA5086 alloy. The artificial sensitization is carried out at two thermal conditions: 800C and 1500C, over three different durations:1, 4, and 15 days and assessed using corrosion tests (NAMLT). Sensitization results in the precipitation of Mg-rich â-related phases along the grain boundaries. The presence of Mg-rich precipitates can play a crucial role in controlling the fatigue life and damage mechanism. Load-controlled fatigue tests was conducted to investigate the post-sensitization fatigue response in weld joints of AA5086 alloys under two extreme conditions based on a degree of sensitization (DOS) value in ambient air (240C) at frequency of 20 Hz and stress-ratio, R=0.1. The fracture surfaces were analyzed via SEM to identify the responsible damage mechanisms and compared with non-sensitized samples. The discussion shall be presented during the conference. |
| Proceedings Inclusion? |
Planned: |