|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-28: Corrosion Properties of Refractory TiNbTaZrMo High Entropy Alloy
||Kwangsuk Park, Bosung Seo, Hyung-Ki Park, Hyunsoo Kang, Jang-Won Kang
|On-Site Speaker (Planned)
The unique characteristics of high entropy allys (HEAs)such as high strength-to-weight ratios, exceptional high temperature strength and good corrosion and oxidation resistance open new paradigm in developing metallic materials. Refractory high entropy alloys like WTaMoNbV HEA have been reported to possess the ability to maintain their high temperature strength. However, it is known that local inhomogeneity in compositions of HEAs occurs, so the composition gradients might give an impact on corrosion properties.
In this study, we investigated corrosion properties of refractory TiNbTaZrMo high entropy alloy which is the well-known composition designed for high temperature materials as well as biomaterials. Spark plasma sintering (SPS) was used to make the spherical powders a bulk form for corrosion tests. Electrochemical methods such as potentiodynamic polarization test, open circuit potential (OCP) measurement and electrochemical impedance spectroscopy (EIS) were used to characterize corrosion properties of the sintered HEAs, compared to the casted one.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume