|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||High Speed Nanoindentation Property Mapping in Dual Phase AlxFeCrNiMn at Elevated Temperatures
||Eric D. Hintsala, Youxing Chen, Jacob Noble, Nathan Mara, Douglas Stauffer
|On-Site Speaker (Planned)
||Eric D. Hintsala
There is interest in developing dual phase HEAs for reactor applications due to potentially high defect tolerance. Given the rigorous mechanical evaluation required for developing high temperature structural materials and the number of candidate HEAs, high throughput techniques are valuable. Using nanoindentation not only gives high spatial resolution of mechanical properties, but requires relatively little sample preparation versus the amount of data that can be generated. This is demonstrated in this study, where three compositions of dual phase AlxFeCrNiMn, with x = 0, 0.3, & 1, are explored from room temperature to 400°C. Hardness and modulus values are assigned to individual phases through correlated EBSD/EDS to determine their relative temperature stability with temperature. Measurements are all made in a high vacuum chamber to reduce the role of oxide formation on measured properties. These measurements serve as a foundation upon which irradiation effects can be added.