Best-fit ellipsoids of atom-probe tomographic data to study coalescence of γ′ (L12) precipitates in Ni-Al-Cr

Richard A. Karnesky; Chantal K. Sudbrack; David N. Seidman

doi:10.1016/j.scriptamat.2007.04.020

Best-fit ellipsoids of atom-probe tomographic data to study coalescence of γ′ (L1₂) precipitates in Ni-Al-Cr

Richard A. Karnesky^*, Chantal K. Sudbrack, David N. Seidman

^*Corresponding author for this work

Materials Science and Engineering

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

47 Scopus citations

Abstract

An algorithm is presented to fit precipitates in atom-probe tomographic data sets as equivalent ellipsoids. Unlike previous techniques, which measure only the radius of gyration, these ellipsoids retain the moments of inertia and principle axes of the original precipitate, preserving crystallographic orientational information. The algorithm is applied to study interconnected γ′-precipitates (L1₂) in the γ-matrix (face-centered cubic) of a Ni-Al-Cr alloy. The precipitates are found to coagulate along 〈1 1 0〉-type directions.

Original language	English (US)
Pages (from-to)	353-356
Number of pages	4
Journal	Scripta Materialia
Volume	57
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2007.04.020
State	Published - Aug 2007

Keywords

Atom-probe tomography
Best-fit ellipsoid
Coarsening
Nickel alloys

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2007.04.020

Cite this

@article{416a767eba264a1988db8f6112e1ecfd,

title = "Best-fit ellipsoids of atom-probe tomographic data to study coalescence of γ′ (L12) precipitates in Ni-Al-Cr",

abstract = "An algorithm is presented to fit precipitates in atom-probe tomographic data sets as equivalent ellipsoids. Unlike previous techniques, which measure only the radius of gyration, these ellipsoids retain the moments of inertia and principle axes of the original precipitate, preserving crystallographic orientational information. The algorithm is applied to study interconnected γ′-precipitates (L12) in the γ-matrix (face-centered cubic) of a Ni-Al-Cr alloy. The precipitates are found to coagulate along 〈1 1 0〉-type directions.",

keywords = "Atom-probe tomography, Best-fit ellipsoid, Coarsening, Nickel alloys",

author = "Karnesky, {Richard A.} and Sudbrack, {Chantal K.} and Seidman, {David N.}",

note = "Funding Information: This research is supported by the National Science Foundation, Division of Materials Research, under Contract DMR–0241928. R.A.K. received partial support from a Walter P. Murphy (W.P.M.) Fellowship and the US Department of Energy (DE–FG02–98ER45721). C.K.S. received partial support from an NSF graduate research fellowship, a W.P.M. Fellowship, and a Northwestern University terminal year fellowship. We thank Imago Scientific Instruments and Dr. M.K. Miller for permitting R.A.K. to modify the source code for envelope , and Dr. D. Mainprice for his inverse pole figure software, ipf2k . Prof. D.C. Dunand, Dr. Z. Mao, and Dr. G. Martin are thanked for discussions. ",

year = "2007",

month = aug,

doi = "10.1016/j.scriptamat.2007.04.020",

language = "English (US)",

volume = "57",

pages = "353--356",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "4",

}

TY - JOUR

T1 - Best-fit ellipsoids of atom-probe tomographic data to study coalescence of γ′ (L12) precipitates in Ni-Al-Cr

AU - Karnesky, Richard A.

AU - Sudbrack, Chantal K.

AU - Seidman, David N.

N1 - Funding Information: This research is supported by the National Science Foundation, Division of Materials Research, under Contract DMR–0241928. R.A.K. received partial support from a Walter P. Murphy (W.P.M.) Fellowship and the US Department of Energy (DE–FG02–98ER45721). C.K.S. received partial support from an NSF graduate research fellowship, a W.P.M. Fellowship, and a Northwestern University terminal year fellowship. We thank Imago Scientific Instruments and Dr. M.K. Miller for permitting R.A.K. to modify the source code for envelope , and Dr. D. Mainprice for his inverse pole figure software, ipf2k . Prof. D.C. Dunand, Dr. Z. Mao, and Dr. G. Martin are thanked for discussions.

PY - 2007/8

Y1 - 2007/8

N2 - An algorithm is presented to fit precipitates in atom-probe tomographic data sets as equivalent ellipsoids. Unlike previous techniques, which measure only the radius of gyration, these ellipsoids retain the moments of inertia and principle axes of the original precipitate, preserving crystallographic orientational information. The algorithm is applied to study interconnected γ′-precipitates (L12) in the γ-matrix (face-centered cubic) of a Ni-Al-Cr alloy. The precipitates are found to coagulate along 〈1 1 0〉-type directions.

AB - An algorithm is presented to fit precipitates in atom-probe tomographic data sets as equivalent ellipsoids. Unlike previous techniques, which measure only the radius of gyration, these ellipsoids retain the moments of inertia and principle axes of the original precipitate, preserving crystallographic orientational information. The algorithm is applied to study interconnected γ′-precipitates (L12) in the γ-matrix (face-centered cubic) of a Ni-Al-Cr alloy. The precipitates are found to coagulate along 〈1 1 0〉-type directions.

KW - Atom-probe tomography

KW - Best-fit ellipsoid

KW - Coarsening

KW - Nickel alloys

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