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@ARTICLE{Fischer:864097,
author = {Fischer, T. and Kuhn, B.},
title = {{N}ew {I}nsights {I}nto the {T}hreshold {B}ehavior of a
$9–12\%$ {C}r {F}erritic/{M}artensitic {S}teel –
{S}eparation and {Q}uantification of {C}rack {C}losure
{M}echanisms},
journal = {International journal of fatigue},
volume = {127},
issn = {0142-1123},
address = {Oxford},
publisher = {Elsevier},
reportid = {FZJ-2019-04000},
pages = {479 - 487},
year = {2019},
abstract = {The energy transition and the associated increase in the
share of regenerative energies require flexible power plant
operation to compensate fluctuations in residual load. As a
result of the decreasing dwell times at constant high
temperatures, the significance of fatigue damage gains in
importance. At present, existing design codes are of limited
validity for this new loading scenario. This necessitates
the development of adapted design codes based on damage
tolerance concepts. For this reason the frequency dependent
threshold behavior of the ferritic/martensitic steel
X20CrMoV12-1 was investigated in a temperature range from
300 °C to 600 °C. In order to exploit the maximum
lifetime of a component without compromising safety,
detailed knowledge on active crack closing mechanisms is of
elementary importance. Therefore, a general experimental
approach for separation and quantification of crack closure
mechanisms and their impact on crack propagation threshold
values was developed. By this methodology, both the
influence of temperature and corrosion on the threshold can
be separated and quantified despite superposition of several
mechanisms. The only application criterion of this procedure
is SR ≪ 1, because roughness induced crack closure has
to be negligible small. If roughness induced crack closure
cannot be neglected, the methodology developed in this study
has to be modified by models which quantify the influence of
roughness induced crack closure.},
cin = {IEK-2},
ddc = {600},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000482492600043},
doi = {10.1016/j.ijfatigue.2019.06.030},
url = {https://juser.fz-juelich.de/record/864097},
}