|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Degradation Behavior of High Entropy Alloys – Corrosion, Erosion, and Wear
||Ayyagari Aditya, Sundeep Mukherjee
|On-Site Speaker (Planned)
High entropy alloys (HEAs) show superior resistance to surface degradation by corrosion and oxidation and are potentially transformative for critical structural applications. However, there is limited understanding of corrosion, erosion, and wear behavior of these alloys in dry and simulated sea water (SSW) environments. 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. Raman and auger surface spectroscopy were employed to identify the corrosion products and passivation layers. The severity of corrosion assisted wear behavior changed with the test conditions in the HEA systems. 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