Title

Anomalous strain-energy-driven macroscale translation of grains during nonisothermal annealing

Document Type

Article

Publication Date

7-21-2021

Department

Department of Materials Science and Engineering

Abstract

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.

Publication Title

Physical Review Materials

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