|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||In-situ Neutron Diffraction Study on Stress-induced Phase Transformation in TiZrHfNbx Refractory High-entropy Alloys
||Xuesong Fan, Yan Chen, Ke An, Peter K. Liaw
|On-Site Speaker (Planned)
High-entropy alloys (HEAs) with excellent structural properties have attracted extensive attentions in the recent decade. Body-centered-cubic (BCC) HEAs, especially those based on refractory elements, show stable microstructures and great mechanical properties at elevated temperatures, which could be widely used in high-temperature applications. Similar to the TRIP (transformation-induced plasticity) steel, the stress-induced phase-transformation was also observed in the TiZrHfNbx refractory HEAs in previous studies. This concept can improve the ductility, which supplies the deficiency of BCC alloys and broaden the application of refractory HEAs. To deeply understand the deformation mechanisms of TiZrHfNbx alloys with different Nb-contents and at different temperatures, the in-situ neutron diffraction study was conducted in this work. Coupled with Scanning Electron Microscopy (SEM) with Backscatter Electron Detector (BSD), Energy Dispersive X-Ray Spectroscopy (EDS), Electron Backscatter Diffraction (EBSD), and Transmission Electron Microscopy (TEM) results, the concept will be further verified to benefit the design of HEAs with excellent properties.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume