Direct measurement of vacancy relaxation by dilatometry

Jaromir Kotzurek; Eva-Maria Steyskal; Bernd Oberdorfer; Anton Hohenwarter; Reinhard Pippan; Wolfgang Sprengel; Roland Würschum

doi:10.1063/1.4958895

Direct measurement of vacancy relaxation by dilatometry

Jaromir Kotzurek, Eva-Maria Steyskal, Bernd Oberdorfer, Anton Hohenwarter, Reinhard Pippan, Wolfgang Sprengel, Roland Würschum^*

^*Corresponding author for this work

Institute of Materials Physics (5170)

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

Abstract

A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.
This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.

Original language	English
Article number	021906
Number of pages	4
Journal	Applied Physics Letters
Volume	109
Issue number	2
DOIs	https://doi.org/10.1063/1.4958895
Publication status	Published - 2016

Fields of Expertise

Advanced Materials Science

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10.1063/1.4958895Licence: CC BY 4.0

Cite this

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abstract = "A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.",

author = "Jaromir Kotzurek and Eva-Maria Steyskal and Bernd Oberdorfer and Anton Hohenwarter and Reinhard Pippan and Wolfgang Sprengel and Roland W{\"u}rschum",

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language = "English",

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journal = "Applied Physics Letters",

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AU - Kotzurek, Jaromir

AU - Steyskal, Eva-Maria

AU - Oberdorfer, Bernd

AU - Hohenwarter, Anton

AU - Pippan, Reinhard

AU - Sprengel, Wolfgang

AU - Würschum, Roland

PY - 2016

Y1 - 2016

N2 - A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.

AB - A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.

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VL - 109

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 021906

ER -

Direct measurement of vacancy relaxation by dilatometry

Abstract

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Transformation and diffusion processes in materials

FWF- Defekte i. ultrafeinkr. Met - Defects and structural anisotropy in ultrafine-crystalline metals

Cite this

Direct measurement of vacancy relaxation by dilatometry

Abstract

Fields of Expertise

Access to Document

Other files and links

Fingerprint

Projects

Transformation and diffusion processes in materials

FWF- Defekte i. ultrafeinkr. Met - Defects and structural anisotropy in ultrafine-crystalline metals

Cite this