Monday  |  Salon 9  |  05:50 PM–06:10 PM

#15879, Deformation Processes at Cryogenic Temperatures by High-Resolution Digital Image Correlation

The present research details an experimental approach to statistically and quantitatively capture deformation events, such as deformation twin and slip, during deformation at cryogenic temperatures. High-resolution digital image correlation inside the scanning electron microscope is used during deformation at cryogenic temperatures to capture nanometer displacements induced by deformation twin and slip over large regions of interest. The advance digital image correlation code, Heaviside-DIC, was implemented to identify slip and deformation twinning automatically. Quantifying deformation twinning and slip is performed in aluminum, titanium alloys, and superalloys. The sensitivity of such an experimental technique is discussed. Correlative measurements between electron-backscatter diffraction and high-resolution digital image correlation are performed to identify relationships between microstructure and deformation processes at cryogenic temperatures.

D. Anjaria   university of illinois at Urbana-Champaign
D. Texier   Institut Clement Ader
V. Valle   Institut Pprime
Jean-Charles Stinville   University of Illinois at Urbana-Champaign