Document Type
Article
Publication Date
12-3-2025
Department
Department of Materials Science and Engineering
Abstract
Betatron x rays generated from laser-wakefield accelerators are a promising source for imaging dynamic processes in materials. Here, we present proof-of-concept imaging of microstructural evolution in a hypermonotectic Al-Bi alloy, which consists of liquid Bi particles in a solid Al matrix. The images capture the elongation and fragmentation of Bi particles upon isothermal annealing. Because of the femtosecond time scale of the betatron source, the images are not subject to motion blur, whereas the accessibility of the source allows for studies of long-term processes such as annealing. The high-resolution data reveal that the evolution of Bi particles is mediated by an interplay of grain-boundary wetting and morphological instability, in stark contrast to an earlier proposal for (inverse) coarsening.
Publication Title
Physical Review Applied
Recommended Citation
Kang, J.,
Shalloo, R.,
Higgins, M.,
Dann, S.,
Gruse, J.,
Underwood, C.,
Antoine, A.,
Arran, C.,
Baird, C.,
Balcazar, M.,
Bourgeois, N.,
Cardarelli, J.,
Krushelnick, K.,
Mangles, S.,
Murphy, C.,
Lu, N.,
Rajeev, P.,
Selwood, M.,
Symes, D.,
Ridgers, C.,
Thomas, A.,
Thornton, C.,
Najmudin, Z.,
Sanders, P.,
Staublin, P.,
Shahani, A.,
&
Streeter, M.
(2025).
Imaging of dynamic processes in materials with a laser-wakefield accelerator.
Physical Review Applied,
24(6).
http://doi.org/10.1103/jzzn-bsy8
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p2/2216
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Version
Publisher's PDF
Publisher's Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Publisher’s version of record: https://doi.org/10.1103/jzzn-bsy8