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@ARTICLE{Shen:627271,
author = {Shen, Jiajia and Yang, Jin and Choi, Yeon Taek and
Gonçalves, Rita and Pedro, Rodrigo and Santana, D. A. and
Coury, F. G. and Schell, N. and Zeng, Zhidan and Kim, Hyoung
Seop and Oliveira, J. P.},
title = {{M}icrostructure evolution and local strengthening
mechanisms in {C}o{C}r{F}e{M}n{N}i high entropy alloy joints
reinforced with {I}nconel 625},
journal = {Materials science $\&$ engineering / A},
volume = {937},
issn = {0921-5093},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {PUBDB-2025-01588},
pages = {148452},
year = {2025},
abstract = {In the fusion-based welding processes, filler materials are
commonly used to adjust and improve the composition of the
fusion zone with the aim of optimizing both microstructure
and mechanical properties. However, in the field of welding
high entropy alloys, the influence of different filler
materials on the microstructure and mechanical response is
still scarce, owing to the yet incipient usage of welding
technologies for these novel, advanced engineering alloys.
To bridge this knowledge gap, Inconel 625 filler wire was
used during gas metal arc welding of the well-known
CoCrFeMnNi high entropy alloy. To systematically analyze the
microstructure evolution and mechanical properties of the
welded joints, multiscale characterization techniques were
employed. It is shown that the different regions of the
welded joint possess distinct microstructural features due
to the weld thermal cycle, which is further compounded in
the fusion zone by the introduction of the filler material.
The use of Inconel 625 filler promotes a solid solution
strengthening effect in the fusion zone and became the main
contributor to the yield strength of this region (302 MPa
(via solid solution strengthening) vs 478 MPa (yield stress
from tensile experiments). Since Hall-Petch strengthening is
predominant in both base material and heat affected zone,
but not on the fusion zone due to the large grain structure
that developed, the addition of Inconel 625 filler
demonstrates to be a feasible approach to increase the
typically low fusion zone strength. By coupling
microstructural characterization with mechanical property
analysis, aided by the calculation of the strengthening
mechanisms, we unveil processing, microstructure, property
relationships, providing a broader basis for the widespread
application of gas metal arc welding for high entropy
alloys.},
cin = {DOOR ; HAS-User / Hereon},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20210899
EC (I-20210899-EC) / CALIPSOplus - Convenient Access to
Light Sources Open to Innovation, Science and to the World
(730872)},
pid = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20210899-EC /
G:(EU-Grant)730872},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001491209100001},
doi = {10.1016/j.msea.2025.148452},
url = {https://bib-pubdb1.desy.de/record/627271},
}