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@TECHREPORT{Roitsch:136058,
author = {Roitsch, Stefan},
title = {{M}icrostructural and macroscopic aspects of the plasticity
of complex metallic alloys. 4281},
volume = {4281},
number = {Juel-4281},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {PreJuSER-136058, Juel-4281},
series = {Berichte des Forschungszentrums Jülich},
pages = {157 p.},
year = {2008},
note = {Record converted from JUWEL: 18.07.2013; Zugl.: Diss., RWTH
Aachen, 2008},
abstract = {Complex metallic alloys (CMAs) represent a class of
materials which are based on crystal structures with
exceptionally large unit cells comprising up to more than a
thousand atoms. As a result of the structural attributes of
these phases, their plastic deformation behaviour features
significant differences to conventional mechanisms known
from structurally simple materials. In the present work, the
plasticity of the three CMA phases, hexagonal μ-Al-Mn,
body-centred cubic Mg$_{32}$(Al,Zn)$_{49}$, and face-centred
cubic $\beta$-Al-Mg was investigated. Uniaxial deformation
experiments on single crystalline samples of these alloys
were carried out and thermodynamic activation parameters of
the deformation processes were determined. Microstructural
investigations by means of transmission electron microscopy
(TEM) were carried out on μ-Al-Mn and
Mg$_{32}$(Al,Zn)$_{49}$. The underlying deformation
mechanisms of these phases were completely determined.
Dislocation climb and associated diffusion of vacancies was
found to play an essential role in the deformation processes
of both materials.},
cin = {IFF-8},
cid = {I:(DE-Juel1)VDB788},
typ = {PUB:(DE-HGF)29},
url = {https://juser.fz-juelich.de/record/136058},
}