| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Effect of Diffusion on Intermetallics at Interface during Friction Stir Welding of Stainless Steel and Pure Titanium |
| Author(s) |
Nikhil Maheshkumar Gotawala, Amber Shrivastava |
| On-Site Speaker (Planned) |
Nikhil Maheshkumar Gotawala |
| Abstract Scope |
Relatively lower temperatures during friction stir welding, limit the formation of intermetallic compounds while joining dissimilar materials. The objective of this work is to understand the intermetallic compound formation and growth during friction stir welding of stainless steel and pure-Ti. Friction stir welding of stainless steel and titanium is performed at two tool rotation speeds: 600 rpm and 700 rpm, with 50 mm/min feed rate and 0.3 mm plunge depth. Numerical modelling is done to predict temperature distribution and history in the stir region. The temperature history is used to estimate the elemental concentration profiles and intermetallic thickness at the interface. Experimental results show FeTi intermetallic at both sides of the interface and β-Ti at titanium side. Further, β-Ti growth rate is higher compared to FeTi growth rate. Numerical results well capture the experimental observations. |
| Proceedings Inclusion? |
Planned: |