|About this Abstract
||Materials Science & Technology 2020
||Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales II
||Synchrotron X-ray Tools for Multiscale Studies of Microstructure Evolution
||Matthew Wilkin, Yueheng Zhang, Yufeng Shen, He Liu, Anthony D Rollett, Robert M. Suter
|On-Site Speaker (Planned)
||Robert M. Suter
High energy x-ray diffraction microscopy (HEDM) makes possible the in-situ observation of internal microstructure evolution at micron to millimeter length scales. Maps of crystal unit cell orientations and grain averaged strain tensors characterize cubic millimeter volumes of polycrystalline samples. Responses to thermal and mechanical loadings have been tracked. However, observed responses show emergent behaviors caused by unseen nanoscale defect motions. Development of predictive models requires experimental observations of the connections between these regimes. Defect motions have been observed in individual nanoscale particles using X-ray Bragg coherent diffractive imaging (BCDI) which is sensitive to atomic displacements on Angstrom length scales. With collaborators at Argonne and Los Alamos National Laboratories, we are working to combine BCDI with HEDM and scanning Laue diffraction methods in order to connect these measurements and length scales. An overview of progress will be given. Our work is supported by DOE/BES grant DESC0019096.