About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
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2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
ON DEMAND: Nanomechanical Testing of In-situ Synthesized Laser-deposited High Entropy Alloys for Aerospace Applications |
Author(s) |
Modupeola Dada, Patricia Popoola, Ntombi Mathe |
On-Site Speaker (Planned) |
Modupeola Dada |
Abstract Scope |
This study examines the nanomechanical properties of in-situ doped Vanadium in AlCoCrFeNiCu and AlCoCrFeNiTi High Entropy Alloys and investigates the effect of V doping on the mechanical properties of AlCoCrFeNiCu and AlCoCrFeNiTi alloys via in-situ laser metal deposition as opposed to the traditional method of mixing powders via a ball mill prone to contamination and segregation. We explore the capability of in situ reactive alloying by delivering the V and high entropy alloy powders from multiple powder feeders through regulating their feed rate ratios into the nozzles. The preliminary nanohardness and microstructural morphologies of the alloys were characterized using nanoindentation tester, XRD and SEM, respectively. The results showed satelliting the larger parent High entropy alloys powder and the smaller V powder fraction using double powder feedstock had a homogeneous distribution with high solidification and dendritic structures. The AlCoCrFeNiCu-Vx showed higher hardness values than AlCoCrFeNiTiVx alloy attributed to the compositional blend. |
Proceedings Inclusion? |
Undecided |