Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys

Satoshi Hata; Kosuke Kimura; Hongye Gao; Syo Matsumura; Minoru Doi; Tomokazu Moritani; Jonathan S. Barnard; Jenna R. Tong; Jo H. Sharp; Paul A. Midgley

doi:10.1002/adma.200702461

Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys

Satoshi Hata, Kosuke Kimura, Hongye Gao, Syo Matsumura, Minoru Doi, Tomokazu Moritani, Jonathan S. Barnard, Jenna R. Tong, Jo H. Sharp, Paul A. Midgley

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

12 Citations (Scopus)

Abstract

A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 ₂-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.

Original language	English
Pages (from-to)	1905-1909
Number of pages	5
Journal	Advanced Materials
Volume	20
Issue number	10
DOIs	https://doi.org/10.1002/adma.200702461
Publication status	Published - May 19 2008

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys",

abstract = "A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 2-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.",

author = "Satoshi Hata and Kosuke Kimura and Hongye Gao and Syo Matsumura and Minoru Doi and Tomokazu Moritani and Barnard, {Jonathan S.} and Tong, {Jenna R.} and Sharp, {Jo H.} and Midgley, {Paul A.}",

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T1 - Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys

AU - Hata, Satoshi

AU - Kimura, Kosuke

AU - Gao, Hongye

AU - Matsumura, Syo

AU - Doi, Minoru

AU - Moritani, Tomokazu

AU - Barnard, Jonathan S.

AU - Tong, Jenna R.

AU - Sharp, Jo H.

AU - Midgley, Paul A.

PY - 2008/5/19

Y1 - 2008/5/19

N2 - A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 2-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.

AB - A study was conducted to perform 3D microstructural analysis based on electron tomography. The study also attempted to investigate a unique domain structure in a Ni-Al-Ti alloy. A two-phase microstructure,composed of L1 2-ordered γ domains with cuboidal shape and an A1-disordered γ matrix exhibited secondary phase separation during aging precipitation of fine γ in each domain. A variety of precipitation behaviors and microstructural evolutions were observed in the second stage of phase separation, depending on on the alloy composition. The study also demonstrated tomographic DFTEM and EFTEM observations, to clarify the 3D morphology of the γ precipitates and compositional distribution in the phase-separated microstructure.

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Electron tomography imaging and analysis of γ′ and γ domains in Ni-based superalloys

Abstract

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