Laue Diffraction in the High Pressure Collaborative Access Team (HPCAT).
ORAL
Abstract
Polychromatic beam diffraction technique is a powerful tool to investigate pressure induced processes in-situ and in-operando. Microstructural information including strain, orientation relations, twinning, crystal morphology is available across phase transitions, deformation, chemical processes. Using this information combined with theory, mechanisms and driving forces of such processes can be investigated. Experimental setup specifically optimized for application of high pressure Laue diffraction is available and open for users at HPCAT. Recent case studies including mechanism of Si I to Si II phase transition, pressure induced processes in Cu50Fe50 precipitates and high entropy alloys will be presented.
*HPCAT operations are supported by DOE-NNSA's Office of Experimental Sciences. The Advanced Photon Source is a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
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Publication:D. Popov, N. Velisavljevic, Wenjun Liu, R. Hrubiak, C. Park, and G. Shen. Real time study of grain enlargement in zirconium under room-temperature compression across the a to ? phase transition Sci. Rep. 9, 15712 (2019)
D. Popov, N. Velisavljevic, and M. Somayazulu. (2019) Mechanisms of Pressure-Induced Phase Transitions by Real-Time Laue Diffraction. Crystals 9, 12: 672
H. Chen, V. I. Levitas, D. Popov, N. Velisavljevic Novel nanostructure, stress relaxation mechanisms, and crystallography for pressure-induced Si-I ? Si-II phase transformation. Submitted to Nature Communications.
A. Chatterjee, D. Popov, A. Misra, N. Velisavljevic Compression of Cu50Fe50 precipitates. Manuscript in preparation.
Presenters
Dmitry Popov
HPCAT, X-ray Science Division, Argonne National Laboratory
High-pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439
Argonne National Laboratory
Authors
Dmitry Popov
HPCAT, X-ray Science Division, Argonne National Laboratory
High-pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439
Argonne National Laboratory
Curtis Kenney-Benson
High-pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439
Argonne National Laboratory
Arun Bommannavar
High-pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439
Argonne National Laboratory
Maddury S Somayazulu
HPCAT, X-ray Science Division, Argonne National Laboratory
