| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Microstructural Evolution and Deformation Mechanisms in Compositionally Complex Alloys |
| Author(s) |
Zachary Kloenne, Jean-Philippe Couzinié, Gopal Viswanathan, William Clark, Yunzhi Wang, Hamish L. Fraser |
| On-Site Speaker (Planned) |
Hamish L. Fraser |
| Abstract Scope |
Compositionally complex alloys (CCA) have been the subject of considerable study in the recent past. Often, they consist of two or more phases such that refractory versions of the alloys would be expected to exhibit useful creep performance. Here, the alloy AlMo0.5NbTa0.5TiZr has been studied. The microstructure of this alloy after an anneal at 1400°C for 24 hours followed by furnace cooling to room temperature consists of a mixture of two phases, one being a bcc solid solution and the other a B2 intermetallic compound, where the interfaces are essentially coherent. Following aging at 1000°C there is a loss of coherency such that an array of misfit dislocations with b=1/2<111> are present to accommodate the misfit between the two phases. The first part of this talk details the characterization of these interfaces. The second part of the talk presents a determination of the deformation mechanisms operative in this CCA. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Mechanical Properties |