About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
A High-Speed Rotational Diamond Anvil Cell for In Situ Analysis of Microstructural Evolution of Metallic Alloys during Solid Phase Processing |
Author(s) |
Arun Devaraj, Tingkun Liu, Changyong Park, Stanislav Sinogeikin, Matthew Olszta, Bharat Gwalani, Lei Li, Nanjun Chen, Qin Pang, Wenkai Fu, Suveen Mathaudhu, Yulan Li, Ayoub Soulami, Shenyang Hu, Peter Sushko, Cynthia Powell |
On-Site Speaker (Planned) |
Arun Devaraj |
Abstract Scope |
To better understand the fundamental mechanisms of mass and energy transfer in materials under shear deformation at the atomic scale, we developed a first of its kind high-speed rotational diamond anvil cell (HS-RDAC) for synchrotron-based in situ high-energy x-ray diffraction (XRD) experiment. We studied the time resolved lattice strain evolution and changes in spatial variation of shear deformation induced alloying in Cu-Ni powder mixture using the HS-RDAC. These in situ results were combined with detailed microstructural characterization before and after the shear deformation using transmission electron microscopy and atom probe tomography, which revealed a shear deformation induced hierarchical nanostructure. Multiscale computational simulations uncovered the mechanisms behind morphological changes, evolution of defect structures and changes in driving force for shear deformation induced intermixing. This in situ HS-RDAC capability, in combination with ex situ microstructural characterization and computational simulations, can provide new insights into the microstructural evolution pathway during shear deformation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Shaping and Forming, Characterization, Modeling and Simulation |