| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Anisotropic Mechanical Properties of a 14YWT Nanostructured Ferritic Alloy |
| Author(s) |
Md Ershadul Alam, Stuart S Maloy, G Robert Odette |
| On-Site Speaker (Planned) |
Md Ershadul Alam |
| Abstract Scope |
Two Nanostructured ferritic alloy plates were fabricated via ball milling of atomized Fe-14Cr-3W-0.4Ti-0.2Y (wt.%) with FeO powders, followed by canning, degassing, hot-extrusion at 850°C, annealing and multipass cross-rolling at 1000°C. This process induced a severe (001) brittle cleavage texture aligned with the plate faces. Plate P1 exhibited pre-existing microcracks (MCs) along the cleavage planes from cross-rolling, whereas P2 contained fewer, if any, MCs. Tensile tests compared out-of-plane (S) and in-plane (L) orientations from -196°C to 800°C, highlighting significant differences. The L-orientation displayed superior tensile properties at room temperature over the S-orientation (tensile stress: 1133 vs. 730 MPa, elongation: 13 vs. 0%). While the properties converge with increasing temperature, they diverge further in sub-zero temperature tests. These differences are due to cleavage on low-toughness, brittle (001) planes. We also assess the tensile property differences between P1 and P2, and the effects of specimen size, to assess the effects of pre-existing microcracks. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Nuclear Materials |