|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Mechanical Properties and Oxidation Resistance of NbTiZr-contaning Refractory High Entropy Alloys with Varying Al, Cr and Mo Content
||Ulanbek Auyeskhan, Hojin Ryu
|On-Site Speaker (Planned)
The main objective of this study is to assess the mechanical properties and oxidation resistance of simplified combinatorial libraries of NbTiZr containing HEA with varying Al, Cr and Mo content. The alloys which have high contents of Al and Cr tend to be very brittle due to the formation of Laves phases. The yield strengths of the combinatorial library at room temperature are in the range of 269 and 1286 MPa while at T=1000°C they are found to be in between 101 and 486 MPa. Additionally, a higher Mo-content (30at%) and/or absence of Al/Cr-content lead to the formation of volatile oxides (i.e. MoO3) after a prolonged oxidation test (t=20h) in a static air condition at T=1000°C. The role of Al, Cr and Mo on the mechanical properties and oxidation resistance of the NbTiZr-containing HEA could be understood systematically by using the simplified combinatorial alloy design approach.
||Planned: Supplemental Proceedings volume