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@ARTICLE{Allam:888764,
author = {Allam, Tarek and Guo, Xiaofei and Lipińska-Chwałek, Marta
and Hamada, Atef and Ahmed, Essam and Bleck, Wolfgang},
title = {{I}mpact of precipitates on the hydrogen embrittlement
behavior of a {V}-alloyed medium-manganese austenitic
stainless steel},
journal = {Journal of materials research and technology},
volume = {9},
number = {6},
issn = {2238-7854},
address = {Rio de Janeiro},
publisher = {Elsevier},
reportid = {FZJ-2020-05193},
pages = {13524 - 13538},
year = {2020},
abstract = {This paper discusses the avoidance of hydrogen
embrittlement (HE) in a medium manganese stainless steel
X20CrNiMnVN18-5-10. We adopted a HE-mitigation strategy that
relies on improving its intrinsic resistance to hydrogen by
adjusting an ultrafine microstructure (∼1.3 µm)
containing a significant amount of nano-sized V- and
Cr-based precipitates in the size range of 20 - ≥200 nm.
The precipitation state was characterized using a
high-resolution scanning transmission electron microscope.
Slow strain rate tests at a strain rate of 10−6 s−1
were conducted on specimens with/without hydrogen
pre-charging to evaluate the HE susceptibility. Thermal
desorption analysis was applied to explore the hydrogen
trapping behavior in cold-rolled, annealed and hydrogen
pre-charged states. Hydrogen uptake and hydrogen desorption
behaviors show a dependence on the size of precipitates. It
is remarked that the large precipitates trap a larger amount
of hydrogen and show a higher temperature desorption peak
than the small precipitates do. The high-temperature
hydrogen desorption peaks (>400 °C) indicate that the
observed nano-sized precipitates provide irreversible
trapping sites, where hydrogen uptake occurs. The
investigated steel X20CrNiMnVN18-5-10 demonstrates an
enhanced intrinsic resistance to HE in comparison to medium
and high manganese as well as stainless steels. The findings
suggest that microstructure engineering with sufficient
number of hydrogen traps in an ultrafine-grained
microstructure is an appropriate HE mitigation strategy that
allows designing hydrogen-resistant advanced high strength
steels.},
cin = {ER-C-2},
ddc = {670},
cid = {I:(DE-Juel1)ER-C-2-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)
/ ERS TvK (ZUK2) - Theodore von Kármán Fellowships
(ZUK2-TvK) / DFG project 29898171 - SFB 761: Stahl - ab
initio. Quantenmechanisch geführtes Design neuer
Eisenbasis-Werkstoffe (29898171)},
pid = {G:(DE-HGF)POF3-143 / G:(DE-82)ZUK2-TvK /
G:(GEPRIS)29898171},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000606413800010},
doi = {10.1016/j.jmrt.2020.09.085},
url = {https://juser.fz-juelich.de/record/888764},
}