| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
N-14: Microstructural Analysis and Mechanical Behavior of Ultrafine-grained Ni-Y-Zr Alloys |
| Author(s) |
Shruti Sharma, Samuel Paul Moehring, Pedro Peralta |
| On-Site Speaker (Planned) |
Shruti Sharma |
| Abstract Scope |
Ultrafine-grained alloys (with grain size between 250-1000nm) such as Cu-Cr-Zr alloys are state-of-the-art materials with potential applications in the field of energy and defense due to their improved mechanical properties. However, these alloys suffer intrinsic weaknesses owing to the properties of their alloying elements (low melting point of Cu). This work focused on developing microstructurally-stable ultrafine-grained Ni-Y-Zr alloys that alleviate such weaknesses by using Nickel for its high melting point, ductility and formability, and Zr and Y, for their ability to produce precipitate in Ni matrix that can enhance strength and stability. Samples were synthesized via arc-melting and characterized using EDS and EBSD to ascertain elemental composition and map-out crystallographic relationships between matrix and precipitates. Annealing heat treatments performed on the samples ensured the stability of precipitates, and uniaxial tension and compression tests reported the quasi-static properties. Furthermore, correlation of mechanical behavior was established with the microstructure of the alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |