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@ARTICLE{Krnsteiner:586432,
author = {Kürnsteiner, Philipp and Barriobero-Vila, Pere and Bajaj,
Priyanshu and De Geuser, Frédéric and Wilms, Markus B. and
Jägle, Eric A. and Raabe, Dierk},
title = {{D}esigning an {F}e-{N}i-{T}i maraging steel tailor-made
for laser additive manufacturing},
journal = {Additive manufacturing},
volume = {73},
issn = {2214-7810},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {PUBDB-2023-03911},
pages = {103647},
year = {2023},
abstract = {Laser additive manufacturing (LAM) offers high flexibility
in the production of customized and geometrically complex
parts. The technique receives great interest from industry
and academia but faces substantial challenges regarding
processability and insufficient mechanical properties of
LAM-produced material. One reason is that currently mainly
conventional alloys are being used in LAM, which were
developed for different processes such as casting. Since
these alloys are not optimized for the specific process
conditions encountered in LAM such as fast cooling and
cyclic re-heating, they cannot be expected to perform
ideally in such processes regarding processability and
resulting mechanical properties. Here we present the
development of a new, simple ternary Fe-Ni-Ti maraging-type
alloy tailor-made for LAM. We used compositionally graded
samples to screen Ti compositions from 0 to 21 at. $\%$ and
efficiently identify promising microstructures and
mechanical properties. Under LAM solidification conditions
the desired mainly martensitic microstructure needed for a
maraging steel formed at Ti compositions ranging from 0 to 7
at. $\%.$ Within this composition range, the intended
microstructure is formed and additionally some unique
process conditions of LAM such as cyclic re-heating can be
exploited. Specifically, in-situ phase transformations can
be controlled during LAM, via the thermal history. At higher
Ti compositions two different eutectic microstructures with
different primary phases were found that show a high
hardness of up to 700 HV.},
cin = {DOOR ; HAS-User},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20221372
EC (I-20221372-EC) / FS-Proposal: I-20210694 (I-20210694)},
pid = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20221372-EC /
G:(DE-H253)I-20210694},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001025337600001},
doi = {10.1016/j.addma.2023.103647},
url = {https://bib-pubdb1.desy.de/record/586432},
}