Investigation of plasticity mechanisms in shock-compressed matter via femtosecond x-ray diffraction

Thesis

The microstructural evolution of dynamically-compressed metals has been an area of active research for decades. This work uses a method of x-ray diffraction from highly-textured tantalum foils in order to identify plastic mechanisms mediating plastic deformations in shock-compressed tantalum. The obtained data provides evidence of shock-induced lattice rotations as well as the first in situ observation of shock-induced twinning. The study extends into an analysis of data capturing material as...

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Authors: Sliwa, M

• Type of award: DPhil
• Level of award: Doctoral
• Awarding institution: University of Oxford
• Language: English
• Keywords: twinning; shock waves; x-ray diffraction
• Subjects: High pressure crystallography