Nondestructive characterization of polycrystalline 3D microstructure with time-domain Brillouin scattering

Yuzhou Wang; David H. Hurley; Zilong Hua; Gaofeng Sha; Samuel Raetz; Vitalyi E. Gusev; Marat Khafizov

doi:10.1016/j.scriptamat.2019.02.037

Nondestructive characterization of polycrystalline 3D microstructure with time-domain Brillouin scattering

Yuzhou Wang, David H. Hurley, Zilong Hua, Gaofeng Sha, Samuel Raetz, Vitalyi E. Gusev, Marat Khafizov

Materials, Manufacturing, & Bioenergy S&T

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

We employ gigahertz frequency ultrasonic waves to non-invasively image grain microstructure in polycrystalline ceria. This technique, termed time-domain Brillouin scattering (TDBS), is a pump-probe technique that launches and monitors ultrasonic waves as they propagate into the sample. We demonstrate TDBS's capability to image microstructure by measuring mode and depth dependent acoustic velocities. The technique provides sufficient contrast to identify grains and offers means to reconstruct subsurface grain boundary's location. The results compare closely with electron backscatter diffraction measurement. This work expands the application of TDBS to 3D structural imaging and offers new route for the nondestructive characterization of grain boundary.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Scripta Materialia
Volume	166
DOIs	https://doi.org/10.1016/j.scriptamat.2019.02.037
State	Published - Jun 2019

Keywords

Grain boundary
Mechanical & acoustical properties
Microstructure
Ultrafast pump-probe spectroscopy

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10.1016/j.scriptamat.2019.02.037

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title = "Nondestructive characterization of polycrystalline 3D microstructure with time-domain Brillouin scattering",

abstract = "We employ gigahertz frequency ultrasonic waves to non-invasively image grain microstructure in polycrystalline ceria. This technique, termed time-domain Brillouin scattering (TDBS), is a pump-probe technique that launches and monitors ultrasonic waves as they propagate into the sample. We demonstrate TDBS's capability to image microstructure by measuring mode and depth dependent acoustic velocities. The technique provides sufficient contrast to identify grains and offers means to reconstruct subsurface grain boundary's location. The results compare closely with electron backscatter diffraction measurement. This work expands the application of TDBS to 3D structural imaging and offers new route for the nondestructive characterization of grain boundary.",

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author = "Yuzhou Wang and Hurley, {David H.} and Zilong Hua and Gaofeng Sha and Samuel Raetz and Gusev, {Vitalyi E.} and Marat Khafizov",

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T1 - Nondestructive characterization of polycrystalline 3D microstructure with time-domain Brillouin scattering

AU - Wang, Yuzhou

AU - Hurley, David H.

AU - Hua, Zilong

AU - Sha, Gaofeng

AU - Raetz, Samuel

AU - Gusev, Vitalyi E.

AU - Khafizov, Marat

PY - 2019/6

Y1 - 2019/6

N2 - We employ gigahertz frequency ultrasonic waves to non-invasively image grain microstructure in polycrystalline ceria. This technique, termed time-domain Brillouin scattering (TDBS), is a pump-probe technique that launches and monitors ultrasonic waves as they propagate into the sample. We demonstrate TDBS's capability to image microstructure by measuring mode and depth dependent acoustic velocities. The technique provides sufficient contrast to identify grains and offers means to reconstruct subsurface grain boundary's location. The results compare closely with electron backscatter diffraction measurement. This work expands the application of TDBS to 3D structural imaging and offers new route for the nondestructive characterization of grain boundary.

AB - We employ gigahertz frequency ultrasonic waves to non-invasively image grain microstructure in polycrystalline ceria. This technique, termed time-domain Brillouin scattering (TDBS), is a pump-probe technique that launches and monitors ultrasonic waves as they propagate into the sample. We demonstrate TDBS's capability to image microstructure by measuring mode and depth dependent acoustic velocities. The technique provides sufficient contrast to identify grains and offers means to reconstruct subsurface grain boundary's location. The results compare closely with electron backscatter diffraction measurement. This work expands the application of TDBS to 3D structural imaging and offers new route for the nondestructive characterization of grain boundary.

KW - Grain boundary

KW - Mechanical & acoustical properties

KW - Microstructure

KW - Ultrafast pump-probe spectroscopy

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SP - 34

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JO - Scripta Materialia

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ER -

Nondestructive characterization of polycrystalline 3D microstructure with time-domain Brillouin scattering

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Keywords

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