文献1（2020）：Experimental study and crystal plasticity finite element simulations of
nano-indentation-induced lattice rotation and the underlying mechanism in TC6 single
α-grain（通过实验和晶体塑性有限元模拟研究TC6α相单晶中纳米压痕诱导的晶格旋转及其潜在机理）
Atomic Force Microscopy (AFM) three-dimensional topography of the sample and the simulated height
cloud image, it can be seen that the pile-up in the middle of the indentation boundaries is more
significant than in the other regions. Extract the surface height of the sample along the axis
of the indentation from the simulation result and compare it with the measurement result of the
corresponding position of the AFM. As the figure shows, the final indentation depth is 368.3 nm,
which is smaller than the previously measured maximum depth of 513 nm. This indicates that after
elastic-plastic deformation during the loading process, a 149.7 nm elastic rebound occurs in the
subsequent unloading process.
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Fig.6. Comparison of: (a) experimental and simulated morphologies of the
indentation (b) height along the white arrows across the indentation.
The mapping relationship between the lattice orientations and the IPF colors can be obtained from
the IPF map, where the dictionary of Euler angles with the corresponding RGB values is
established. A virtual IPF map can then be obtained based on the simulated orientation
information and, the lattice orientation is illustrated. A high-resolution lattice orientation
map was successfully obtained through PED in the slice beneath the indentation despite the large
residual stress caused by severe plastic deformation of the sample, and the experimentally
determined IPF map and simulated IPF map are compared in Fig.7.
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Fig. 8. IPF map of the slice after indentation: (a) simulation results along X,
(b) experimental results along X, (c) experimental results along Z and diffraction patterns
obtained from
different subgrains, (d) distributions of rotation angles and rotation axes.
Experimental study and crystal plasticity finite element simulations of
nano-indentation-induced lattice rotation and the underlying mechanism in TC6 single
α-grain
Materials and Design 188 (2020) 108423
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