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@ARTICLE{Sanamar:477205,
author = {Sanamar, Soheil and Brokmeier, Heinz-Günter and Schell,
Norbert},
title = {{F}ormation of the intermetallic phases
{A}l$_{12}${M}g$_{17}$ and {A}l$_3${M}g$_2$ during heating
of elemental {A}l-{M}g composites studied by high-energy
{X}-ray diffraction},
journal = {Journal of alloys and compounds},
volume = {911},
issn = {0925-8388},
address = {Lausanne},
publisher = {Elsevier},
reportid = {PUBDB-2022-01933},
pages = {165114},
year = {2022},
note = {Waiting for fulltext},
abstract = {The purpose of the present study is to track the formation
of the intermetallic phases that form in the binary Al-Mg
system and investigate their orientation relationships to
the parent Al and Mg elements. Therefore, two compositions
Al60Mg40 and Al40Mg60 $(wt\%),$ which are very suitable for
studying the diffusion of Al in Mg and Mg in Al were heated
from room temperature up to elevated temperatures below the
melting point. Powder metallurgy, including cold extrusion
was used to create a large interface between the Al and Mg,
which facilitates fast reaction kinetics. In order to
observe the phase formation during heating and analyze the
crystal structures, X-ray diffraction using synchrotron
radiation was used. The use of high energy X-ray was
extremely helpful, enabling the detection of small phase
fractions and information on the orientation relationships
between the Al and Mg and the intermetallic phases that
formed. The $γ$-Al$_{12}$Mg$_{17}$ phase was the first
phase formed in both alloy compositions on annealing.
Subsequently, the $β$-Al$_3$Mg$_2$phase was formed. After
annealing at 400 ºC for 2 h, the Al40Mg60 composition
consisted of a very high amount of Al$_{12}$Mg$_{17}$ and a
small amount of Mg phase while the Al60Mg40 composition
consisted of mainly Al$_3$Mg$_2$ and a small fraction of
Al$_{12}$Mg$_{17}$, indicating that thermodynamic
equilibrium has been approximated. On further annealing at
400 ºC for 12 h, both compositions formed only one phase,
namely the Al$_{12}$Mg$_{17}$ phase in the Al40Mg60
composition and the Al$_3$Mg$_2$ phase in the Al60Mg40
composition. In this condition, a Pitsch-Schrader
orientation relationship was found between the Mg and the
γ-Al$_{12}$Mg$_{17}$ phase, the occurrence of which is
discussed within the framework of literature models. No
orientation relationship between either the Al or the Mg
with the Al$_3$Mg$_2$ phase was found.},
cin = {DOOR ; HAS-User / Hereon},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3)},
pid = {G:(DE-HGF)POF4-6G3},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)36 / PUB:(DE-HGF)16},
UT = {WOS:000797204400003},
doi = {10.1016/j.jallcom.2022.165114},
url = {https://bib-pubdb1.desy.de/record/477205},
}