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@ARTICLE{Chandran:1021016,
author = {Chandran, Anju and Ganesan, Hariprasath and Cyron,
Christian J.},
title = {{S}tudying the effects of {N}b on high-temperature
deformation in {T}i{A}l alloys using atomistic simulations},
journal = {Materials and design},
volume = {237},
issn = {0264-1275},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2024-00476},
pages = {112596 -},
year = {2024},
abstract = {Intermetallic γ(TiAl)-based alloys find their application
as high-temperature materials for aero engine and automotive
components. Microstructure optimization and microalloying
play key roles in optimizing these alloys. Several
pioneering experimental works showed improved mechanical
properties of γ(TiAl)-based alloys containing Niobium (Nb).
Despite Nb being a key alloying element, its contribution
remains debated, if not least understood, due to the TiAl
microstructure's complexity with hierarchical interfaces.
This work examines the effects of Nb on the high-temperature
deformation behavior of TiAl alloys using atomistic
simulations. These revealed that Nb alloying retarded the
stress-induced phase transformation of γ → , favoring a
refined microstructure with the dislocation sources from
microstructure boundaries and interfaces at high temperature
and improving thus the ductility. Our
microstructure-informed atomistic models reveal a
comprehensive picture of the underlying nanomechanical
events.},
cin = {IAS-9},
ddc = {690},
cid = {I:(DE-Juel1)IAS-9-20201008},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511)},
pid = {G:(DE-HGF)POF4-5111},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001165848000001},
doi = {10.1016/j.matdes.2023.112596},
url = {https://juser.fz-juelich.de/record/1021016},
}