Using Bragg CDI to Study Phase Transitions in Binary Alloys
ORAL
Abstract
Nimish Prashant Nazirkar1, Edwin Fohtung1
1Department of Materials Sciences and Engineering, Rensselaer Polytechnic Institute, Troy, NY
Abstract:
During directional solidification of a binary alloy, the solid–liquid interface exhibits a variety of patterns that are due to the Mullins–Sekerka instability and governed by the growth conditions [1]. It is well known that properties of the grown material are largely controlled by the microstructures left in the solid during processing. Thus, a precise quantification of the microstructure and mastering of the solidification is essential to tailor products in a reproducible fashion to a specified quality. Bragg coherent diffraction imaging (BCDI), a well-established technique for imaging the internal strain of nanocrystals and grains in polycrystalline films. I intend to use BCDI to image the internal compositional distribution of binary alloys in thermal equilibrium. Our results will be used to relate displacement fields to compositional distributions in various binary alloy nanoparticles.
References:
1. Nguyen Thi, H.; Jamgotchian, H.; Gastaldi, J.; Härtwig, J.; Schenk, T.; Klein, H.; Billia, B.; Baruchel, J.; Dabo, Y, Journal of Physics D Applied Physics, 2003, 36, A83-A86, doi:10.1088/0022-3727/36/10A/317.
2. D. Karpov & E. Fohtung J. of Appl. Phys. 125, 121101 (2019)
1Department of Materials Sciences and Engineering, Rensselaer Polytechnic Institute, Troy, NY
Abstract:
During directional solidification of a binary alloy, the solid–liquid interface exhibits a variety of patterns that are due to the Mullins–Sekerka instability and governed by the growth conditions [1]. It is well known that properties of the grown material are largely controlled by the microstructures left in the solid during processing. Thus, a precise quantification of the microstructure and mastering of the solidification is essential to tailor products in a reproducible fashion to a specified quality. Bragg coherent diffraction imaging (BCDI), a well-established technique for imaging the internal strain of nanocrystals and grains in polycrystalline films. I intend to use BCDI to image the internal compositional distribution of binary alloys in thermal equilibrium. Our results will be used to relate displacement fields to compositional distributions in various binary alloy nanoparticles.
References:
1. Nguyen Thi, H.; Jamgotchian, H.; Gastaldi, J.; Härtwig, J.; Schenk, T.; Klein, H.; Billia, B.; Baruchel, J.; Dabo, Y, Journal of Physics D Applied Physics, 2003, 36, A83-A86, doi:10.1088/0022-3727/36/10A/317.
2. D. Karpov & E. Fohtung J. of Appl. Phys. 125, 121101 (2019)
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Presenters
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Nimish P Nazirkar
Rensselaer Polytechnic Institute
Authors
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Nimish P Nazirkar
Rensselaer Polytechnic Institute