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@ARTICLE{Li:829829,
author = {Li, X. and Spatschek, Robert and F. Bottler and Schmitt, A.
and Heilmaier, M. and Stein, F.},
title = {{C}oarsening {K}inetics of {L}amellar {M}icrostructures:
{E}xperiments and {S}imulations on a {F}ully-{L}amellar
{F}e-{A}l {I}n {S}itu {C}omposite},
journal = {Acta materialia},
volume = {127},
issn = {1359-6454},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-03451},
pages = {230},
year = {2017},
abstract = {A very fine lamellar microstructure consisting of the
intermetallic phases FeAl and FeAl2 forms in binary Fe-Al
alloys due to the eutectoid reaction Fe5Al8 ↔ FeAl +
FeAl2, which takes place in the Al range between 56.0 and
64.4 $at.\%$ at 1095 °C. A fully lamellar microstructure is
obtained at the eutectoid composition 60.9 $at.\%$ Al. The
initial lamellar spacing λ0λ0 of as-cast material is 200
± 40 nm. In this study, the kinetics of coarsening of the
FeAl + FeAl2 lamellar microstructure is investigated at four
different temperatures in the range 600 °C–1000 °C with
holding times from 10 min to 7000 h. It is found that the
increase of the lamellar spacing can be described as View
the MathML sourceλ3=λ03+kt. The value obtained for the
activation energy proves that the lamellar coarsening is a
volume-diffusion-controlled process. Besides the
experimental investigations, phase-field modeling is used to
simulate the lamellar coarsening. The results are in good
agreement with the experimental observations with regard to
the evolution of the lamellar morphology and the value of
the coarsening exponent.},
cin = {IEK-2},
ddc = {670},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {111 - Efficient and Flexible Power Plants (POF3-111)},
pid = {G:(DE-HGF)POF3-111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000397362600023},
doi = {10.1016/j.actamat.2017.01.041},
url = {https://juser.fz-juelich.de/record/829829},
}