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A Precise Method for Analysis of Elemental Distribution Inside Solute Clusters

Published online by Cambridge University Press:  15 March 2019

Takumi Kitayama ,
Masaya Kozuka ,
Yasuhiro Aruga  and
Chikara Ichihara
Takumi Kitayama*
Affiliation:
Applied Physics Research Laboratory, Kobe Steel Ltd, 1-5-5, Takatsukadai, Nishi-ku, Kobe, Hyogo 651-2271, Japan
Masaya Kozuka
Affiliation:
Material Solutions Division, Kobelco Research Institute, Inc., 1-5-5, Takatsukadai, Nishi-ku, Kobe, Hyogo 651-2271, Japan
Yasuhiro Aruga
Affiliation:
R&D Planning Department, Kobe Steel, Ltd, 2-2-4, Wakinohama-kaigandori, Chuo-ku, Kobe, Hyogo 651-8585, Japan
Chikara Ichihara
Affiliation:
Applied Physics Research Laboratory, Kobe Steel Ltd, 1-5-5, Takatsukadai, Nishi-ku, Kobe, Hyogo 651-2271, Japan
*
*Author for correspondence: Takumi Kitayama, E-mail: [email protected]
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Abstract

A procedure to analyze the elemental concentration distribution inside solute clusters after detection of clusters from atom probe tomography data set was proposed. We developed a code which can directly illustrate an average concentration profile inside a cluster even in the case of including various sizes of ellipsoidal clusters. The profile can be with respect to absolute distance and includes errors in each data point. The reliability of the developed code was verified by analyzing an artificial cluster model which has inhomogeneous elemental distribution. It was found that the precise estimation of cluster centroids is important and that the preferable conditions for targeting clusters are a detection efficiency of over 20%, over 30 atoms in a cluster on average, and over 100 atoms for each concentration data point.

Keywords

atom probe tomographyclusterdata analysiselemental concentration distribution
Type
Data Analysis
Information
Microscopy and Microanalysis , Volume 25 , Special Issue 2: Atom Probe Tomography and Microscopy APT&M 2018 , April 2019 , pp. 349 - 355
Copyright
Copyright © Microscopy Society of America 2019 

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