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@ARTICLE{Zubair:904933,
author = {Zubair, M. and Sandlöbes-Haut, S. and Lipińska-Chwałek,
M. and Wollenweber, M. A. and Zehnder, C. and Mayer, J. and
Gibson, J. S. K.-L. and Korte-Kerzel, S.},
title = {{C}o-deformation between the metallic matrix and
intermetallic phases in a creep-resistant
{M}g-3.68{A}l-3.8{C}a alloy},
journal = {Materials and design},
volume = {210},
issn = {0141-5530},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2022-00249},
pages = {110113},
year = {2021},
abstract = {The microstructure of Mg-Al-Ca alloys consists of a hard
intra- and intergranular eutectic Laves phase network
embedded in a soft α-Mg matrix. For such heterogeneous
microstructures, the mechanical response and co-deformation
of both phases under external load are not yet fully
understood. We therefore used nano- and microindentation in
combination with electron microscopy to study the
deformation behaviour of an Mg-3.68Al-3.8Ca alloy.We found
that the hardness of the Mg2Ca phase was significantly
larger than the α-Mg phase and stays constant within the
measured temperature range. The strain rate sensitivity of
the softer α-Mg phase and of the interfaces increased while
activation volume decreased with temperature. The creep
deformation of the Mg2Ca Laves phase was significantly lower
than the α-Mg phase at 170 °C. Moreover, the deformation
zone around and below microindents was dependant on the
matrix orientation and was influenced by the presence of
Laves phases. Most importantly, slip transfer from the α-Mg
phase to the (Mg,Al)2Ca Laves phase occurred, carried by the
basal planes. Based on the observed orientation relationship
and active slip systems, a slip transfer mechanism from the
soft α-Mg phase to the hard Laves phase is proposed.
Further, we present implications for future alloy design
strategies.},
cin = {ER-C-2},
ddc = {690},
cid = {I:(DE-Juel1)ER-C-2-20170209},
pnm = {5353 - Understanding the Structural and Functional Behavior
of Solid State Systems (POF4-535) / SFB-1394-A03 -
Charakterisierung von Versetzungen und planaren Defekten
(A03) (437411567) / SFB 1394 A05 - Versetzungen in komplexen
intermetallischen Phasen (A05) (437412665) /
Multiphysikbeschreibung von Mg-Kompositen auf Kornebene
(C01) (437513708) / SFB 1394 C02 - Ko-Verformung von
(inter)metallischen Kompositen (C02) (437514011)},
pid = {G:(DE-HGF)POF4-5353 / G:(GEPRIS)437411567 /
G:(GEPRIS)437412665 / G:(GEPRIS)437513708 /
G:(GEPRIS)437514011},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000706125700001},
doi = {10.1016/j.matdes.2021.110113},
url = {https://juser.fz-juelich.de/record/904933},
}