About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Microstructural Evolution of Pure Aluminum Revealed by In-situ Synchrotron X-ray Diffraction during Shear Deformation in a High-speed Rotational Diamond Anvil Cell |
Author(s) |
Tingkun Liu, Bharat Gwalani, Joshua Silverstein , Changyong Park, Lei Li, Stas Sinogeikin, Tamas Varga, Ayoub Soulami, Arun Devaraj |
On-Site Speaker (Planned) |
Tingkun Liu |
Abstract Scope |
A newly designed high-speed rotational diamond anvil cell (HSRDAC) was utilized to explore dynamic microstructural evolution of pure aluminum by in-situ synchrotron X-ray diffraction (XRD) under simultaneously applied translational and rotational shear force for simulating the severe shear deformation. A low rotational speed was chosen to initially investigate the performance of HSRDAC and validate the experimentational technique. The XRD results showed significant strain heterogeneity of accumulated plastic shear deformation. The dynamic XRD observation also revealed the microstructural changes compared to static observation. the Ex-situ multimodal characterizations by X-ray computed tomography and advanced electron microscopy were performed to understand the mass transfer and microstructure modification after shear deformation. The results of in-situ studies were correlated with ex-situ multimodal characterizations, which enables a new scientific understanding of the highly dynamic microstructural transformation pathways during severe shear deformation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, Other |