|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Development and Characterisation of a New TiVNbMo-based Refractory High Entropy Alloy for High Temperature Applications.
||Lucy Farquhar, Robert Snell, Iain Todd, Russell Goodall
|On-Site Speaker (Planned)
Refractory high entropy alloys (RHEAs) offer an interesting opportunity to tailor specific material properties and especially to retain high strength at elevated temperatures. Additive manufacturing (AM) has also been successfully utilised to make these difficult to process RHEAs with increased strength and refined microstructures, though few alloys have yet been specifically developed with this process in mind. Therefore, in this work the development of a new AM-processable TiVNbMo-based RHEA is presented from theoretical design and modelling stages, experimental weld tracks, to the resulting alloy manufactured by laser powder bed fusion (LBPF). These LPBF builds were completed using both bespoke pre-alloyed powder and off-the-shelf elemental powder, with a comparison between the two feed stocks and the resulting microstructures of the parts built. The thermal and mechanical properties and oxidation behaviour of the alloy are then characterised and compared with the properties of some conventional alloys.
||Planned: Metallurgical and Materials Transactions