Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction

Guangni Zhou; Wolfgang Pantleon; Ruqing Xu; Wenjun Liu; Kai Chen; Yubin Zhang

doi:10.1080/21663831.2020.1862932

Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction

Guangni Zhou, Wolfgang Pantleon, Ruqing Xu, Wenjun Liu, Kai Chen^*, Yubin Zhang^*

^*Corresponding author for this work

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Abstract

A novel approach evolved from the classical Wilkens’ method has been developed to quantify the local dislocation density based on X-ray radial profiles obtained by 3D synchrotron monochromatic X-ray microdiffraction. A deformed Ni-based superalloy consisting of γ matrix and γ′ precipitates has been employed as model material. The quantitative results show that the local dislocation densities vary with the depths along the incident X-ray beam in both phases and are consistently higher in the γ matrix than in the γ′ precipitates. The results from X-ray microdiffraction are in general agreement with the transmission electron microscopic observations.

Original language	English
Journal	Materials Research Letters
Volume	9
Issue number	4
Pages (from-to)	183-189
ISSN	2166-3831
DOIs	https://doi.org/10.1080/21663831.2020.1862932
Publication status	Published - 2021

Bibliographical note

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords

3D synchrotron
Microdiffraction
Dislocation density
Ni-based superalloy
Transmission electron microscopy

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title = "Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction",

abstract = "A novel approach evolved from the classical Wilkens{\textquoteright} method has been developed to quantify the local dislocation density based on X-ray radial profiles obtained by 3D synchrotron monochromatic X-ray microdiffraction. A deformed Ni-based superalloy consisting of γ matrix and γ′ precipitates has been employed as model material. The quantitative results show that the local dislocation densities vary with the depths along the incident X-ray beam in both phases and are consistently higher in the γ matrix than in the γ′ precipitates. The results from X-ray microdiffraction are in general agreement with the transmission electron microscopic observations.",

keywords = "3D synchrotron, Microdiffraction, Dislocation density, Ni-based superalloy, Transmission electron microscopy",

author = "Guangni Zhou and Wolfgang Pantleon and Ruqing Xu and Wenjun Liu and Kai Chen and Yubin Zhang",

note = "This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.",

year = "2021",

doi = "10.1080/21663831.2020.1862932",

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T1 - Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction

AU - Zhou, Guangni

AU - Pantleon, Wolfgang

AU - Xu, Ruqing

AU - Liu, Wenjun

AU - Chen, Kai

AU - Zhang, Yubin

N1 - This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2021

Y1 - 2021

N2 - A novel approach evolved from the classical Wilkens’ method has been developed to quantify the local dislocation density based on X-ray radial profiles obtained by 3D synchrotron monochromatic X-ray microdiffraction. A deformed Ni-based superalloy consisting of γ matrix and γ′ precipitates has been employed as model material. The quantitative results show that the local dislocation densities vary with the depths along the incident X-ray beam in both phases and are consistently higher in the γ matrix than in the γ′ precipitates. The results from X-ray microdiffraction are in general agreement with the transmission electron microscopic observations.

AB - A novel approach evolved from the classical Wilkens’ method has been developed to quantify the local dislocation density based on X-ray radial profiles obtained by 3D synchrotron monochromatic X-ray microdiffraction. A deformed Ni-based superalloy consisting of γ matrix and γ′ precipitates has been employed as model material. The quantitative results show that the local dislocation densities vary with the depths along the incident X-ray beam in both phases and are consistently higher in the γ matrix than in the γ′ precipitates. The results from X-ray microdiffraction are in general agreement with the transmission electron microscopic observations.

KW - 3D synchrotron

KW - Microdiffraction

KW - Dislocation density

KW - Ni-based superalloy

KW - Transmission electron microscopy

U2 - 10.1080/21663831.2020.1862932

DO - 10.1080/21663831.2020.1862932

M3 - Journal article

SN - 2166-3831

VL - 9

SP - 183

EP - 189

JO - Materials Research Letters

JF - Materials Research Letters

IS - 4

ER -

Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction

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