Microstructure and vacancy-type defects in high-pressure torsion deformed Al-Cu-Mg-Mn alloy

Autor(en)

Wolfgang Lechner, Werner Puff, Bernhard Mingler, Michael Zehetbauer, Roland Würschum

Abstrakt

High-pressure torsion (HPT) was applied to the structural refinement of an age-hardenable Al–Cu–Mg–Mn alloy (AW 2017). HPT deformation gives rise to a fragmentation and dissolution of aging-induced precipitates and to a grain refinement down to sizes of 100 nm. Positron annihilation spectroscopy, in particular the chemical sensitive method of two-dimensional Doppler broadening spectroscopy, was used for a detailed analysis of the nature of vacancy-type defects induced by deformation and vacancy–solute interaction. The correlation between microstructure and atomic defects with thermal annealing is discussed.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Technische Universität Graz, Austrian Research Centers GmbH (ARC Seibersdorf)

Journal

Scripta Materialia

Band

61

Seiten

383-386

Anzahl der Seiten

4

ISSN

1359-6462

DOI

https://doi.org/10.1016/j.scriptamat.2009.04.027

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/af4ec1cb-1420-42b6-b454-db4af25a708a