|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-93: Formation and Mechanical Properties of TaNbVTiW High Entropy Alloys Prepared by Powder Metallurgy
||Da Hye Song, Sangjun Kim, Eun Soo Park, Jin Kyu Lee
|On-Site Speaker (Planned)
||Jin Kyu Lee
In general, refractory high entropy alloys(RHEAs) have been produced by vacuum arc melting due to the high melting temperature of component elements. As-casted RHEAs generally exhibit coarse dendritic structures and segregation which leading to undesirable the mechanical properties. High entropy alloys(HEAs) prepared by mechanical alloying and subsequent consolidation process are a promising method to obtain the homogeneous microstructures and enhanced mechanical properties.
In this study, we report the formation and mechanical properties of the TaNbVTiW HEAs prepared by powder metallurgy. The HEAs synthesized by high energy ball milling followed by spark plasma sintering(SPS), vacuum hot pressing(VHP) and hot isostatic pressing(HIP). Structural characterization was performed using X-ray diffractometry (XRD) and scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). Compressive strength of HEAs was measured at room and elevated temperature with a strain rate of 1x10-4s-1.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume