Precipitation of ordered phases in metallic solid solutions: A synergistic clustering and ordering process

G. B. Viswanathan; R. Banerjee; A. Singh; S. Nag; J. Tiley; H. L. Fraser

doi:10.1016/j.scriptamat.2011.06.002

Precipitation of ordered phases in metallic solid solutions: A synergistic clustering and ordering process

G. B. Viswanathan, R. Banerjee, A. Singh, S. Nag, J. Tiley, H. L. Fraser

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

34 Scopus citations

Abstract

The precipitation mechanism of ordered phases in metallic solid solutions has been a long-standing controversy due to the competing roles of chemical clustering (or phase separation) and chemical ordering. In the present study, this controversy has been resolved through the coupled use of aberration-corrected high-resolution scanning transmission electron microscopy and atom probe tomography. The experimental results, obtained at atomic resolution, can only be interpreted satisfactorily on the basis of phase separation via spinodal decomposition followed by chemical ordering.

Original language	English
Pages (from-to)	485-488
Number of pages	4
Journal	Scripta Materialia
Volume	65
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2011.06.002
State	Published - Sep 2011
Externally published	Yes

Keywords

APT
HRSTEM
Nickel-base superalloy
Spinodal decomposition

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10.1016/j.scriptamat.2011.06.002

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abstract = "The precipitation mechanism of ordered phases in metallic solid solutions has been a long-standing controversy due to the competing roles of chemical clustering (or phase separation) and chemical ordering. In the present study, this controversy has been resolved through the coupled use of aberration-corrected high-resolution scanning transmission electron microscopy and atom probe tomography. The experimental results, obtained at atomic resolution, can only be interpreted satisfactorily on the basis of phase separation via spinodal decomposition followed by chemical ordering.",

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AU - Viswanathan, G. B.

AU - Banerjee, R.

AU - Singh, A.

AU - Nag, S.

AU - Tiley, J.

AU - Fraser, H. L.

PY - 2011/9

Y1 - 2011/9

N2 - The precipitation mechanism of ordered phases in metallic solid solutions has been a long-standing controversy due to the competing roles of chemical clustering (or phase separation) and chemical ordering. In the present study, this controversy has been resolved through the coupled use of aberration-corrected high-resolution scanning transmission electron microscopy and atom probe tomography. The experimental results, obtained at atomic resolution, can only be interpreted satisfactorily on the basis of phase separation via spinodal decomposition followed by chemical ordering.

AB - The precipitation mechanism of ordered phases in metallic solid solutions has been a long-standing controversy due to the competing roles of chemical clustering (or phase separation) and chemical ordering. In the present study, this controversy has been resolved through the coupled use of aberration-corrected high-resolution scanning transmission electron microscopy and atom probe tomography. The experimental results, obtained at atomic resolution, can only be interpreted satisfactorily on the basis of phase separation via spinodal decomposition followed by chemical ordering.

KW - APT

KW - HRSTEM

KW - Nickel-base superalloy

KW - Spinodal decomposition

UR - http://www.scopus.com/inward/record.url?scp=79960848080&partnerID=8YFLogxK

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SP - 485

EP - 488

JO - Scripta Materialia

JF - Scripta Materialia

IS - 6

ER -

Precipitation of ordered phases in metallic solid solutions: A synergistic clustering and ordering process

Abstract

Keywords

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