Advanced TEM and SEM methods applied to 3D Nano- and microstructural investigations of Ni4Ti3 precipitates in Ni-Ti (SMA)

Dominique Schryvers; Wim Tirry; Shanshan Cao

doi:10.4028/www.scientific.net/SSP.172-174.229

Advanced TEM and SEM methods applied to 3D Nano- and microstructural investigations of Ni₄Ti₃ precipitates in Ni-Ti (SMA)

Dominique Schryvers, Wim Tirry, Shanshan Cao

Fluid Dynamics

University of Antwerp

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Two different kinds of experimental approaches yielding three-dimensional structural information on metastable semi-coherent precipitates are demonstrated. By combining high-resolution images from two independent viewing directions a full description of the strain field surrounding a nano-sized Ni₄Ti₃ precipitate in Ni-Ti can be obtained. The principal axes and strains correlate well with the transformation strain of the observed R-phase transformation close to the precipitate. Using a slice-and-view procedure in a FIB/SEM dual-beam instrument, a three-dimensional voxel dataset is produced from which morphological and distributional information on the same precipitates can be obtained yielding new insight into the particular transformation paths of these alloys, relevant for their functional behaviour.

Original language	English
Title of host publication	Solid-Solid Phase Transformations in Inorganic Materials
Publisher	Trans Tech Publications Ltd
Pages	229-235
Number of pages	7
ISBN (Print)	9783037851432
DOIs	https://doi.org/10.4028/www.scientific.net/SSP.172-174.229
Publication status	Published - 2011

Publication series

Name	Solid State Phenomena
Volume	172-174
ISSN (Print)	1012-0394

Keywords

3D imaging
HRTEM
Ni-Ti
Precipitation
Slice-and-view
Strain field

Access to Document

10.4028/www.scientific.net/SSP.172-174.229

Cite this

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title = "Advanced TEM and SEM methods applied to 3D Nano- and microstructural investigations of Ni4Ti3 precipitates in Ni-Ti (SMA)",

abstract = "Two different kinds of experimental approaches yielding three-dimensional structural information on metastable semi-coherent precipitates are demonstrated. By combining high-resolution images from two independent viewing directions a full description of the strain field surrounding a nano-sized Ni4Ti3 precipitate in Ni-Ti can be obtained. The principal axes and strains correlate well with the transformation strain of the observed R-phase transformation close to the precipitate. Using a slice-and-view procedure in a FIB/SEM dual-beam instrument, a three-dimensional voxel dataset is produced from which morphological and distributional information on the same precipitates can be obtained yielding new insight into the particular transformation paths of these alloys, relevant for their functional behaviour.",

keywords = "3D imaging, HRTEM, Ni-Ti, Precipitation, Slice-and-view, Strain field",

author = "Dominique Schryvers and Wim Tirry and Shanshan Cao",

year = "2011",

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language = "English",

isbn = "9783037851432",

series = "Solid State Phenomena",

publisher = "Trans Tech Publications Ltd",

pages = "229--235",

booktitle = "Solid-Solid Phase Transformations in Inorganic Materials",

}

Advanced TEM and SEM methods applied to 3D Nano- and microstructural investigations of Ni₄Ti₃ precipitates in Ni-Ti (SMA). / Schryvers, Dominique; Tirry, Wim; Cao, Shanshan.
Solid-Solid Phase Transformations in Inorganic Materials. Trans Tech Publications Ltd, 2011. p. 229-235 (Solid State Phenomena; Vol. 172-174).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Tirry, Wim

AU - Cao, Shanshan

PY - 2011

Y1 - 2011

N2 - Two different kinds of experimental approaches yielding three-dimensional structural information on metastable semi-coherent precipitates are demonstrated. By combining high-resolution images from two independent viewing directions a full description of the strain field surrounding a nano-sized Ni4Ti3 precipitate in Ni-Ti can be obtained. The principal axes and strains correlate well with the transformation strain of the observed R-phase transformation close to the precipitate. Using a slice-and-view procedure in a FIB/SEM dual-beam instrument, a three-dimensional voxel dataset is produced from which morphological and distributional information on the same precipitates can be obtained yielding new insight into the particular transformation paths of these alloys, relevant for their functional behaviour.

AB - Two different kinds of experimental approaches yielding three-dimensional structural information on metastable semi-coherent precipitates are demonstrated. By combining high-resolution images from two independent viewing directions a full description of the strain field surrounding a nano-sized Ni4Ti3 precipitate in Ni-Ti can be obtained. The principal axes and strains correlate well with the transformation strain of the observed R-phase transformation close to the precipitate. Using a slice-and-view procedure in a FIB/SEM dual-beam instrument, a three-dimensional voxel dataset is produced from which morphological and distributional information on the same precipitates can be obtained yielding new insight into the particular transformation paths of these alloys, relevant for their functional behaviour.

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KW - HRTEM

KW - Ni-Ti

KW - Precipitation

KW - Slice-and-view

KW - Strain field

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