| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
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| Presentation Title |
In-situ X-ray Diffraction of Nanolamellar High-entropy Alloys under Shock Compression and Release |
| Author(s) |
Kento Katagiri, Sara Irvine, Laura Madril, Jie Ren, Alexis Amouretti, Ryosuke Kodama, Hirotaka Nakamura, Norimasa Ozaki, Kohei Miyanishi, Keiichi Sueda, Tadashi Togashi, Makina Yabashi, Toshinori Yabuuchi, Vohra Yogesh, Wen Chen, Leora Dresselhaus-Marais |
| On-Site Speaker (Planned) |
Kento Katagiri |
| Abstract Scope |
High entropy alloys (HEA) printed by laser powder bed fusion (L-PBF) technique show outstanding mechanical performance under static conditions but have not yet been characterized at high strain rates for extreme applications. L-PBF printed AlCoCrFeNi2.1 has been demonstrated to exhibit a nanolamellar dual-phase structure of face-centered cubic (fcc) and body-centered cubic (bcc) lattice structures that exhibits high strength and ductility [J. Ren et al., Nature, 608, 62 (2022)]. Here we present the mechanical response of the L-PBF AlCoCrFeNi2.1 HEA to loading at the fastest strain rates achievable: during shock compression (~108 s-1). Using the X-ray Free Electron Laser at SACLA, we study these failure dynamics using in-situ x-ray diffraction measurements during the shock-induced compression and subsequent release of pressure. The collected structural information of L-PBF AlCoCrFeNi2.1 HEA under shock-deformation is important for the use of this high-performance material under extreme conditions such as aerospace engineering and shock-resistant shielding. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Phase Transformations |