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@ARTICLE{Thirathipviwat:454488,
author = {Thirathipviwat, P. and Song, G. and Bednarcik, Jozef and
Kühn, U. and Gemming, T. and Nielsch, K. and Han, Jun-Hee},
title = {{C}ompositional complexity dependence of dislocation
density and mechanical properties in high entropy alloy
systems},
journal = {Progress in natural science: materials international},
volume = {30},
number = {4},
issn = {1002-0071},
address = {[S.l.]},
publisher = {Elsevier},
reportid = {PUBDB-2021-00562},
pages = {545 - 551},
year = {2020},
abstract = {This study focuses on a quantitative analysis of
dislocation accumulation after cold plastic deformation and
mechanical properties of FeNiCoCrMn and TiNbHfTaZr high
entropy alloys (HEAs) which are single phase fcc and bcc
solid solutions, respectively. In order to study the role of
compositional complexity from unary to quinary compositions
on dislocation accumulation and mechanical properties after
plastic deformation, the single solid solution phase forming
sub-alloys of the two HEAs were investigated. All studied
samples revealed a large plastic deformability under
cold-rotary swaging process by $85–90\%$ area reduction
without intermediate annealing. The dislocation density of
all studied samples, determined by Williamson-Hall method on
synchrotron X-ray diffraction patterns, were between
10$^{14}$ - 10$^{15}$ m$^{-2}$ dependent on the alloy
composition. The level of dislocation density after plastic
deformation is not only affected by the number of
constituent element but the lattice distortion and intrinsic
properties in terms of stacking fault energy, modulus
misfit, and melting point also impact the dislocation
storage. The level of dislocation density determines the
level of mechanical properties because of a resistance to
dislocation motions. The hardness and yield compressive
strength of the studied samples are proportional to the
level of dislocation density.},
cin = {FS-PET-D},
ddc = {500},
cid = {I:(DE-H253)FS-PET-D-20190712},
pnm = {6213 - Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G3 - PETRA III (POF3-622)},
pid = {G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G3},
experiment = {EXP:(DE-H253)P-P02.1-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000579857400014},
doi = {10.1016/j.pnsc.2020.07.002},
url = {https://bib-pubdb1.desy.de/record/454488},
}