About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
Presentation Title |
B-3: High Temperature Oxidation of HEAs and NC-strengthened HEAs in Presence of Water Vapor |
Author(s) |
Patrice Berthod, Lionel Aranda, Ghouti Medjahdi |
On-Site Speaker (Planned) |
Patrice Berthod |
Abstract Scope |
Exposed to air at high temperature, chromia-forming alloys, and even alumina-forming alloys, may behave differently in presence of water vapor by comparison to dry air. Notably, chromia volatilization may be accelerated for a given constant temperature and even it may take place at temperatures lower than 1000°C. Usually not really concerned by volatilization, alumina may start to be affected by volatilization in case of humidified air. Due to the presence of manganese in their chemical compositions, Cantor's alloys and derivatives oxidize with the development of complex oxide scales including mixed (Cr,Mn)-oxides, which may behave differently than pure chromia. In this work, oxidation tests in hot humidified air are carried out, followed by kinetic treatment of the mass gain files and metallographical characterization of the oxidized states, with special interest on the differences between dry air and hot air conditions of high temperature oxidation. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Environmental Effects, |