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001021016 1001_ $$00009-0001-0738-5877$$aChandran, Anju$$b0
001021016 245__ $$aStudying the effects of Nb on high-temperature deformation in TiAl alloys using atomistic simulations
001021016 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2024
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001021016 520__ $$aIntermetallic 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.
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001021016 7001_ $$0P:(DE-Juel1)200155$$aGanesan, Hariprasath$$b1$$eCorresponding author$$ufzj
001021016 7001_ $$0P:(DE-HGF)0$$aCyron, Christian J.$$b2
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