The whole specimen was subjected to
uniaxial loading whereas the loading modes in local regions at the
crack tip may be much more variable and complicated with the
changes of crack propagation path.Series of Bright field (BF)TEM,
high resolutionTEM(HRTEM) and high angle angular dark field
scanning transmission electron microscopy(HAADF-STEM)images
were recorded to reveal the deformation and fracture behaviors
from multiple scales and perspectives.