Real time study of grain enlargement in zirconium under room-temperature compression across the α to ω phase transition
- Argonne National Lab. (ANL), Lemont, IL (United States). High Pressure Collaborative Access Team, X-ray Science Div.
- Argonne National Lab. (ANL), Lemont, IL (United States). High Pressure Collaborative Access Team, X-ray Science Div.; Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Shock and Detonation Physics Group; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physics Div.-Physical & Life Sciences Directorate
- Argonne National Lab. (ANL), Lemont, IL (United States). X-ray Science Div.
We report a synchrotron Laue diffraction study on the microstructure evolution in zirconium (Zr) as it undergoes a pressure-driven structural phase transformation, using a recently developed real time scanning x-ray microscopy technique. Time resolved characterizations of microstructure under high pressure show that Zr exhibits a grain enlargement across the α-Zr to ω-Zr structural phase transition at room-temperature, with nucleation and growth of ω-Zr crystals observed from initially a nano-powdered α-Zr matrix. The observed grain enlargement is unusual since the enlargement processes typically require substantially high temperature to overcome the activation barriers for forming and moving of grain boundaries. Possible mechanisms for the grain enlargement are discussed.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Science Foundation (NSF); Consortium for Materials Properties Research in Earth Sciences (COMPRES)
- Grant/Contract Number:
- AC02-06CH11357; 89233218CNA000001
- OSTI ID:
- 1574137
- Alternate ID(s):
- OSTI ID: 1835795
- Report Number(s):
- LA-UR-21-22821; 150626; TRN: US2100311
- Journal Information:
- Scientific Reports, Vol. 9, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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