Anomalous strain-energy-driven macroscale translation of grains during nonisothermal annealing
Journal Article
·
· Physical Review Materials
- Univ. of Michigan, Ann Arbor, MI (United States)
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Michigan Technological Univ., Houghton, MI (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
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. Here, the subsequent evolution of grains shows unexpected grain translations over length scales of 10-100 mu m. 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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1826180
- Journal Information:
- Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 7 Vol. 5; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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