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@ARTICLE{Guan:646659,
author = {Guan, Xu and Guo, Yan-Xin and Wang, Lu-Da and Jia, Nan and
Jiang, Shuang and Gan, Weimin and Yan, Hai-Le and Zuo,
Liang},
title = {{E}nhanced strength-ductility synergy by integrating
metastable and heterostructured design in {F}e{N}i{C}r{V}
alloy},
journal = {International journal of plasticity},
volume = {200},
issn = {0749-6419},
address = {Frankfurt, M. [u.a.]},
publisher = {Pergamon Press},
reportid = {PUBDB-2026-00906},
pages = {104654},
year = {2026},
abstract = {Enhancing the strength of metallic materials usually
compromises their ductility since bothproperties are
intrinsically decided by chemical bond strength but with
opposite dependencies.Despite great effort via
microstructural regulation, tackling the strength-ductility
paradox inmetals and alloys remains a challenge. To achieve
superior strength-ductility combination, herewe report an
integrated metastable and heterostructured alloy design
strategy. Guided by ab-initiothermodynamics and dynamics
calculations, a novel metastable Fe68Ni12Cr10V10 (at. $\%)$
dualphaseeutectic multicomponent alloy in which the
martensitic transformation may occur underdeformation was
fabricated. By applying routine thermomechanical processing,
a multiheterostructuredmaterial characterized by alternating
fcc and bcc lamellae, fully recrystallizedfcc grains and
unrecrystallized bcc grains, as well as a bimodal
distribution of fcc grains, wasobtained. Yield strength of
the material is comparable to that of the high-strength bcc
referencealloy, while its ductility also surpasses the
ductile fcc reference alloy. By in-situ high-energy
X-raydiffraction measurements, the superior
strength-ductility synergy was found to originate from
thecoupled effects of hetero-deformation induced
strengthening and transformation-induced
plasticity.Specifically, the high strength is primarily
ascribed to the strengthening imparted byalternating soft
fcc and hard bcc lamellar structures. The exceptional
ductility stems from multistageα'-martensite transformation
over a broad strain range, which is unique to the
multiheterostructure.The synergistic effects of the
heterostructure and the athermal transformationoffer a
practical route to endow advanced materials with superior
mechanical properties.},
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)},
pid = {G:(DE-HGF)POF4-6G3},
experiment = {EXP:(DE-H253)P-P07-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.ijplas.2026.104654},
url = {https://bib-pubdb1.desy.de/record/646659},
}