|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Corrosion, Erosion, and Wear Behavior of High Entropy Alloys
||Aditya Ayyagari, Sundeep Mukherjee
|On-Site Speaker (Planned)
There is limited understanding of surface degradation behavior of high entropy alloys (HEAs) viz. corrosion, erosion, and wear. Particularly, the response of these alloys in dry and simulated sea water (SSW) environments has not been reported, which could potentially make them transformative for critical structural applications. We report on the wear and corrosion mechanisms for several canonical HEAs in dry and SSW environments. Adhesive wear was the dominant wear mechanism involved in the degradation process. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements were performed to understand the corrosion mechanisms. The severity of corrosion assisted wear behavior changed with the test conditions in the HEA systems. Raman and auger surface spectroscopy were employed to identify the corrosion products and passivation layers. This study demonstrates the improved surface degradation resistance of HEAs, which may lead to adoption of these materials for structural applications in marine environments.
||Planned: Supplemental Proceedings volume