About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Neutron and X-ray Scattering in Materials Science
|
Presentation Title |
Effect of Deformation on Microstructure Evolution In Dilute MgYZn Alloys Examined by Combined Use of SWAXS and EXAFS |
Author(s) |
Hiroshi Okuda, Yoshiaki Maegawa, Yoshihito Kawamura, Shin-ichi Inoue |
On-Site Speaker (Planned) |
Hiroshi Okuda |
Abstract Scope |
Dilute Mg-Y-Zn alloys containing partial structure of long-range stacking ordered (LPSO) phase attracted attention due to their capability of kink deformation upon deformation. The microstructures and their evolution in those alloys were examined by in-situ small- and wide angle X-ray scattering and EXAFS at the Zn K absorption edge. In the early stage of precipitation, in-situ SWAXS suggests development of very thin two-dimensional segregation layer of clusters at elevated temperatures, while deformation at elevated temperatures gives thicker segregation layers. Since the dilute alloys of engineering interest consist of fine-grained polycrystalls, the SAXS pattern gave a specific fog-box like profiles. The effect of deformation on the microstructural evolution was examined by comparing the temporal developments of the two conditions. The clusters in the segregation layers was also examined by EXAFS at the Zn absorption edge. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnesium, Phase Transformations, |