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Correlative Energy-Dispersive X-Ray Spectroscopic Tomography and Atom Probe Tomography of the Phase Separation in an Alnico 8 Alloy

TitleCorrelative Energy-Dispersive X-Ray Spectroscopic Tomography and Atom Probe Tomography of the Phase Separation in an Alnico 8 Alloy
Publication TypeJournal Article
Year of Publication2016
AuthorsGuo, W, Sneed, BT, Zhou, L, Tang, W, Kramer, MJ, Cullen, DA, Poplawsky, JD
JournalMicroscopy and Microanalysis
Volume22
Pagination1251-1260
Date Published12
Type of ArticleArticle
ISBN Number1431-9276
Accession NumberWOS:000393853100014
Keywordsalnico alloy, Atom probe tomography (APT), correlative tomography, electron tomography, evolution, field, haadf-stem tomography, materials, Materials Science, microscopy, Phase separation, scale, science, specimens, transmission electron-microscopy
Abstract

nodal decomposition in addition to quantitative information of the composition of a nanoscale volume. Subsequent analysis of a portion of the same specimen by APT offers quantitative chemical information of each phase at the sub-nanometer scale. Furthermore, APT reveals small, 2-4 nm Fe-rich alpha(1) phases that are nucleated in the Ni-rich alpha(2) matrix. From this information, we show that phase separation of the alnico 8 alloy consists of both spinodal decomposition and nucleation and growth processes. The complementary benefits and challenges associated with correlative STEM-EDS and APT are discussed.

DOI10.1017/s1431927616012496
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Bonded Magnets

Alternate JournalMicrosc. microanal.