Identification of different positron trapping sites during artificial aging of a commercial light weight alloy

Laura Resch; Gregor Klinser; Wolfgang Sprengel; Roland Würschum

doi:10.1063/1.5135855

Identification of different positron trapping sites during artificial aging of a commercial light weight alloy

Laura Resch, Gregor Klinser, Wolfgang Sprengel, Roland Würschum

Institute of Materials Physics (5170)

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

Abstract

Despite the great relevance of age hardenable light weight alloys, the underlying precipitate formation, especially the initial clustering stages are not fully understood yet. In a previous study, we could identify and analyze three main stages of the precipitation sequence in the commercial alloy AW6060. In the present study, additionally, we detected shallow positron traps attributed to solute clusters by temperature dependent measurements of the positron lifetime after distinct artificial aging times at 210°C. For a first sample, artificially aged for 1000 s, the existence of shallow positron traps was unambiguously proven whereas for a second sample, aged for 2 h, only the presence of a small fraction of shallow traps coexisting with a predominant fraction of β” precipitates could be concluded.

Original language	English
Title of host publication	The 18th International Conference on Positron Annihilation (ICPA-18)
Subtitle of host publication	AIP Conference Proceedings
Pages	050012-1 - 050012-4
Number of pages	4
Volume	2182
DOIs	https://doi.org/10.1063/1.5135855
Publication status	Published - 27 Dec 2019

Publication series

Name	AIP Conference Proceedings
Publisher	American Institute of Physics Publising LLC
ISSN (Print)	0094-243X

Fields of Expertise

Advanced Materials Science

Access to Document

10.1063/1.5135855Licence: Unspecified

Defects & Transformations of Materials
Klinser, G., Sprengel, W. & Würschum, R.
1/01/13 → …
Project: Research area
Atomic defects in metals and metals oxides
Sprengel, W., Würschum, R., Klinser, G. & Resch, L.
1/01/12 → …
Project: Research project

Precipitation Processes Including Initial Clustering during Artificial Aging in a Commercial Al-Mg-Si Alloy
Laura Resch (Speaker), Gregor Klinser (Contributor), Elisabeth Hengge (Contributor), Robert Josef Enzinger (Contributor), Martin Luckabauer (Contributor), Wolfgang Sprengel (Contributor) & Roland Würschum (Contributor)
20 Aug 2018
Activity: Talk or presentation › Poster presentation › Science to science

Cite this

Resch, L., Klinser, G., Sprengel, W., & Würschum, R. (2019). Identification of different positron trapping sites during artificial aging of a commercial light weight alloy. In The 18th International Conference on Positron Annihilation (ICPA-18): AIP Conference Proceedings (Vol. 2182, pp. 050012-1 - 050012-4). (AIP Conference Proceedings). https://doi.org/10.1063/1.5135855

Identification of different positron trapping sites during artificial aging of a commercial light weight alloy. / Resch, Laura; Klinser, Gregor; Sprengel, Wolfgang et al.
The 18th International Conference on Positron Annihilation (ICPA-18): AIP Conference Proceedings . Vol. 2182 2019. p. 050012-1 - 050012-4 (AIP Conference Proceedings).

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

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abstract = "Despite the great relevance of age hardenable light weight alloys, the underlying precipitate formation, especially the initial clustering stages are not fully understood yet. In a previous study, we could identify and analyze three main stages of the precipitation sequence in the commercial alloy AW6060. In the present study, additionally, we detected shallow positron traps attributed to solute clusters by temperature dependent measurements of the positron lifetime after distinct artificial aging times at 210°C. For a first sample, artificially aged for 1000 s, the existence of shallow positron traps was unambiguously proven whereas for a second sample, aged for 2 h, only the presence of a small fraction of shallow traps coexisting with a predominant fraction of β” precipitates could be concluded.",

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N2 - Despite the great relevance of age hardenable light weight alloys, the underlying precipitate formation, especially the initial clustering stages are not fully understood yet. In a previous study, we could identify and analyze three main stages of the precipitation sequence in the commercial alloy AW6060. In the present study, additionally, we detected shallow positron traps attributed to solute clusters by temperature dependent measurements of the positron lifetime after distinct artificial aging times at 210°C. For a first sample, artificially aged for 1000 s, the existence of shallow positron traps was unambiguously proven whereas for a second sample, aged for 2 h, only the presence of a small fraction of shallow traps coexisting with a predominant fraction of β” precipitates could be concluded.

AB - Despite the great relevance of age hardenable light weight alloys, the underlying precipitate formation, especially the initial clustering stages are not fully understood yet. In a previous study, we could identify and analyze three main stages of the precipitation sequence in the commercial alloy AW6060. In the present study, additionally, we detected shallow positron traps attributed to solute clusters by temperature dependent measurements of the positron lifetime after distinct artificial aging times at 210°C. For a first sample, artificially aged for 1000 s, the existence of shallow positron traps was unambiguously proven whereas for a second sample, aged for 2 h, only the presence of a small fraction of shallow traps coexisting with a predominant fraction of β” precipitates could be concluded.

U2 - 10.1063/1.5135855

DO - 10.1063/1.5135855

M3 - Conference paper

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T3 - AIP Conference Proceedings

SP - 050012-1 - 050012-4

BT - The 18th International Conference on Positron Annihilation (ICPA-18)

ER -

Identification of different positron trapping sites during artificial aging of a commercial light weight alloy

Abstract

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Fields of Expertise

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Projects

Defects & Transformations of Materials

Atomic defects in metals and metals oxides

Activities

Precipitation Processes Including Initial Clustering during Artificial Aging in a Commercial Al-Mg-Si Alloy

Cite this