About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
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Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
ON DEMAND: Designing New Corrosion Resistant Materials with Exceptional Strength-ductility Synergy and Good Weldability Using High Entropy Approach |
Author(s) |
Saurabh S. Nene, Rajiv Mishra |
On-Site Speaker (Planned) |
Saurabh S. Nene |
Abstract Scope |
Multiphase high entropy alloy (HEA) design provides abundant compositional space for developing newer materials having unexpected properties. However, good weldability is an important requirement for applications that require building a structural system. Thus we are pursuing new HEA design and processing approach wherein all other essential/desirable properties would be synergized with good weldability. As HEAs tend to limit solute partitioning or promote disordered solid solutions, a question emerges regarding formation of intermetallic compounds (IMCs) in the weld. Can IMCs be minimized in welds? With this notion, new metastable HEAs were designed and their preliminary weldability was evaluated through bead-on-plate friction stir welding (FSW). As-FSW HEAs showed exceptional combination of mechanical properties and corrosion resistance, the work was extended to dissimilar butt FSW of HEA/Al-7050 alloy. Initial results showed lower reactivity at the weld interface. The results are compared to dissimilar welds of Al alloy/stainless steel combinations. |
Proceedings Inclusion? |
Undecided |