Anomalous strain-energy-driven macroscale translation of grains during nonisothermal annealing
Department of Materials Science and Engineering
We report a mode of grain growth, involving the macroscopic translation of grain centers during nonisothermal annealing. Through synchrotron high-energy x-ray diffraction microscopy, we find dissolution of semicoherent precipitates generates dislocations, thereby raising the stored strain energy within grains. The subsequent evolution of grains shows unexpected grain translations over length scales of 10-100 μm. Phase-field simulations reveal that such translations are not uncommon in strain-energy-driven grain growth, wherein different regions of a grain may grow and shrink simultaneously.
Physical Review Materials
Staublin, P. D.,
Anomalous strain-energy-driven macroscale translation of grains during nonisothermal annealing.
Physical Review Materials,
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