About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Ultrafine-grained and Heterostructured Materials (UFGH XII)
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Presentation Title |
Microstructure Evolution in Additively Manufactured and High-pressure Torsion Processed High-entropy Alloys during Heating as Characterized by Neutron Diffraction |
Author(s) |
Xiaojing Liu, Jae-Kyung Han, Yusuke Onuki, Yulia O Kuzminova, Stanislav A Evlashin, Megumi Kawasaki, Klaus-Dieter Liss |
On-Site Speaker (Planned) |
Xiaojing Liu |
Abstract Scope |
The microstructure evolution during heating of a 3d-printed and high-pressure torsion processed high entropy alloy CoCrFeNi is investigated using in-situ neutron diffraction. For comparison, the same experiment is performed on the as-printed high entropy alloy. Because of strain anisotropy in as-printed material, the modified Wiiliamson-Hall method is calculated from the conventional Willamson-Hall plot by applying a dislocation model. The evolution of dislocation density during heating can be detected. Different behavior upon heating of as-printed, as-cast and HPT processed high entropy alloys can be revealed by peak width analysis to distinguish recovery, recrystallization and grain growth. Finally, the texture also plays a role during above mentioned processes. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Characterization, Additive Manufacturing |