| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Microstructural and Mechanical Characterization of Titanium/Steel Joints Produced by Ultrasound Enhanced Friction Stir Welding |
| Author(s) |
Andreas Gester, Marco Thomae, Guntram Wagner |
| On-Site Speaker (Planned) |
Andreas Gester |
| Abstract Scope |
Superimposing the friction stir welding process with another type of energy input is able to improve the joint quality and tensile strength of FSW joints further. One approach is the transmission of high power ultrasound into the joining zone synchronously to the FSW process through an ultrasound roll seam module. This hybrid method has shown a positive impact on the joints, e.g. an improved stirring in the nugget and the shattering of undesired intermetallic phases, which lead to enhanced mechanical properties. Current work focuses on utilizing this hybrid method for producing joints of Ti6Al4V and SAE 304 sheets. Response surface methodology has been used for identifying suitable process parameters. For comparing the effect of high power ultrasound during the FSW process the microstructure of these joints has been evaluated via light/scanning electron microscopy as well as microhardness mappings. Quasi-static and dynamic properties have been investigated via tensile and fatigue tests. |
| Proceedings Inclusion? |
Planned: |