Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography

Tala'at Al-Kassab; Michael Kompatscher; Reiner Kirchheim; Gernot Kostorz; Bernd Schönfeld

doi:10.1016/j.micron.2014.04.004

Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography

Tala'at Al-Kassab, Michael Kompatscher, Reiner Kirchheim, Gernot Kostorz, Bernd Schönfeld

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3 Scopus citations

Abstract

The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. © 2014 Elsevier Ltd.

Original language	English (US)
Pages (from-to)	45-51
Number of pages	7
Journal	Micron
Volume	64
DOIs	https://doi.org/10.1016/j.micron.2014.04.004
State	Published - Sep 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors are grateful to Erwin Fischer for growing the single crystals. This research was supported in part by the Swiss National Science Foundation. T. Al-Kassab would like to appreciate the generous base line funding support by KAUST.

ASJC Scopus subject areas

Structural Biology
Cell Biology

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10.1016/j.micron.2014.04.004

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title = "Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography",

abstract = "The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. {\textcopyright} 2014 Elsevier Ltd.",

author = "Tala'at Al-Kassab and Michael Kompatscher and Reiner Kirchheim and Gernot Kostorz and Bernd Sch{\"o}nfeld",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors are grateful to Erwin Fischer for growing the single crystals. This research was supported in part by the Swiss National Science Foundation. T. Al-Kassab would like to appreciate the generous base line funding support by KAUST.",

year = "2014",

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doi = "10.1016/j.micron.2014.04.004",

language = "English (US)",

volume = "64",

pages = "45--51",

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T1 - Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography

AU - Al-Kassab, Tala'at

AU - Kompatscher, Michael

AU - Kirchheim, Reiner

AU - Kostorz, Gernot

AU - Schönfeld, Bernd

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors are grateful to Erwin Fischer for growing the single crystals. This research was supported in part by the Swiss National Science Foundation. T. Al-Kassab would like to appreciate the generous base line funding support by KAUST.

PY - 2014/9

Y1 - 2014/9

N2 - The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. © 2014 Elsevier Ltd.

AB - The decomposition behavior of Ni-rich Ni-Ti was reassessed using Tomographic Atom Probe (TAP) and Laser Assisted Wide Angle Tomographic Atom Probe. Single crystalline specimens of Ni-11.3at.% Ti were investigated, the states selected from the decomposition path were the metastable γ″ and γ' states introduced on the basis of small-angle neutron scattering (SANS) and the two-phase model for evaluation. The composition values of the precipitates in these states could not be confirmed by APT data as the interface of the ordered precipitates may not be neglected. The present results rather suggest to apply a three-phase model for the interpretation of SANS measurements, in which the width of the interface remains nearly unchanged and the L12 structure close to 3:1 stoichiometry is maintained in the core of the precipitates from the γ″ to the γ' state. © 2014 Elsevier Ltd.

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DO - 10.1016/j.micron.2014.04.004

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SN - 0968-4328

VL - 64

SP - 45

EP - 51

JO - Micron

JF - Micron

ER -

Phase decomposition and ordering in Ni-11.3 at.% Ti studied with atom probe tomography

Abstract

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ASJC Scopus subject areas

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