Defects in Al-3wt%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopy

Peter Parz; M.J. Faller; R. Pippan; Werner Puff; Roland Würschum

doi:10.1016/j.phpro.2012.06.003

Defects in Al-3wt%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopy

Peter Parz^*
, M.J. Faller
, R. Pippan
, Werner Puff
, Roland Würschum

^*Corresponding author for this work

Institute of Materials Physics (5170)

Research output: Contribution to journal › Article

Abstract

High-pressure torsion (HPT) was applied to the structural refinement of an age-hardenable Al-Cu alloy. HPT deformation gives rise to a grain refinement down to sizes of 100 nm and introduces various types of open volume defects. Positron annihilation spectroscopy (PAS), especially the chemical sensitive method of two-dimensional Doppler-broadening spectroscopy (2d-DB), was used for a detailed analysis of the deformation-induced vacancy-type defects and the vacancy-solute interaction. The correlation between microstructure and thermal annealing is discussed. HPT-deformed Al-3wt%Cu shows predominantly deformation-induced positron traps with a strongly reduced copper environment in comparison with the undeformed sample.

Original language	English
Pages (from-to)	10-15
Journal	Physics Procedia
Volume	35
DOIs	https://doi.org/10.1016/j.phpro.2012.06.003
Publication status	Published - 2012

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

Access to Document

10.1016/j.phpro.2012.06.003Licence: CC BY-NC-ND 3.0

1 Finished
1 Active

Atomic defects in metals and metals oxides
Resch, L. (Contact person), Würschum, R. (Contact person), Sprengel, W. (Project manager on research unit) & Klinser, G. (Attendee / Assistant)
1/01/12 → 31/12/26
Project: Research project
Energy-related Materials & Nanoporous Metals
Würschum, R. (Contact person), Brossmann, U. (Other function) & Steyskal, E.-M. (Contact person)
1/01/00 → 31/12/24
Project: Research area

Cite this

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title = "Defects in Al-3wt\%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopy",

abstract = "High-pressure torsion (HPT) was applied to the structural refinement of an age-hardenable Al-Cu alloy. HPT deformation gives rise to a grain refinement down to sizes of 100 nm and introduces various types of open volume defects. Positron annihilation spectroscopy (PAS), especially the chemical sensitive method of two-dimensional Doppler-broadening spectroscopy (2d-DB), was used for a detailed analysis of the deformation-induced vacancy-type defects and the vacancy-solute interaction. The correlation between microstructure and thermal annealing is discussed. HPT-deformed Al-3wt\%Cu shows predominantly deformation-induced positron traps with a strongly reduced copper environment in comparison with the undeformed sample.",

author = "Peter Parz and M.J. Faller and R. Pippan and Werner Puff and Roland W{\"u}rschum",

year = "2012",

doi = "10.1016/j.phpro.2012.06.003",

language = "English",

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journal = "Physics Procedia ",

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T1 - Defects in Al-3wt%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopy

AU - Parz, Peter

AU - Faller, M.J.

AU - Pippan, R.

AU - Puff, Werner

AU - Würschum, Roland

PY - 2012

Y1 - 2012

N2 - High-pressure torsion (HPT) was applied to the structural refinement of an age-hardenable Al-Cu alloy. HPT deformation gives rise to a grain refinement down to sizes of 100 nm and introduces various types of open volume defects. Positron annihilation spectroscopy (PAS), especially the chemical sensitive method of two-dimensional Doppler-broadening spectroscopy (2d-DB), was used for a detailed analysis of the deformation-induced vacancy-type defects and the vacancy-solute interaction. The correlation between microstructure and thermal annealing is discussed. HPT-deformed Al-3wt%Cu shows predominantly deformation-induced positron traps with a strongly reduced copper environment in comparison with the undeformed sample.

AB - High-pressure torsion (HPT) was applied to the structural refinement of an age-hardenable Al-Cu alloy. HPT deformation gives rise to a grain refinement down to sizes of 100 nm and introduces various types of open volume defects. Positron annihilation spectroscopy (PAS), especially the chemical sensitive method of two-dimensional Doppler-broadening spectroscopy (2d-DB), was used for a detailed analysis of the deformation-induced vacancy-type defects and the vacancy-solute interaction. The correlation between microstructure and thermal annealing is discussed. HPT-deformed Al-3wt%Cu shows predominantly deformation-induced positron traps with a strongly reduced copper environment in comparison with the undeformed sample.

U2 - 10.1016/j.phpro.2012.06.003

DO - 10.1016/j.phpro.2012.06.003

M3 - Article

SN - 1875-3892

VL - 35

SP - 10

EP - 15

JO - Physics Procedia

JF - Physics Procedia

ER -

Defects in Al-3wt%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopy

Abstract

Fields of Expertise

Treatment code (Nähere Zuordnung)

Access to Document

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Projects

Atomic defects in metals and metals oxides

Energy-related Materials & Nanoporous Metals

Cite this