Effects of Cr and W in TiMoNb Refractory High Entropy Alloys

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dc.authoridCHATTOPADHYAY, ARUN/0000-0001-9302-1289
dc.authoridAvar, Baris/0000-0002-6234-5448
dc.authoridsimsek, tuncay/0000-0002-4683-0152
dc.authoridDAG, ILKER EMIN/0000-0003-1116-9074
dc.contributor.authorSimsek, Tuncay
dc.contributor.authorKurtulus, Altug
dc.contributor.authorAvar, Baris
dc.contributor.authorGuler, Seval Hale
dc.contributor.authorDag, Ilker Emin
dc.contributor.authorChattopadhyay, Arun K.
dc.date.accessioned2025-01-21T16:38:16Z
dc.date.available2025-01-21T16:38:16Z
dc.date.issued2024
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThis study focuses on synthesizing and characterizing mechanically alloyed refractory high entropy alloys (RHEA) containing TiMoNb, Cr, W, and Cr + W. Analytical techniques including XRD, SEM, EDX, DTA, and TGA were employed to explore the influence of Cr and W on the alloys' structure, morphology, and thermal stability towards oxidation. XRD analysis confirmed the formation of a single-phase bcc solid solution in TiMoNbCr, TiMoNbW, and TiMoNbCrW alloys. Crystallite size decreased as milling progressed, yielding average sizes of approximately 7.2 nm, 7.4 nm, and 9.7 nm, with lattice strains of 1.143%, 1.148%, and 1.15%, respectively. Both experimental and calculated values of lattice parameters converged to around 3.1685 +/- 0.002 and 3.1791 +/- 0.010 angstrom for all three alloys. The synergy of Cr and W in TiMoNb was observed for the first time, impacting dislocation density, hardness, and oxidation stability. TiMoNbCrW exhibited reduced dislocation density and the highest hardness (502 HV). TGA indicated enhanced oxidation resistance up to 400 degrees C for TiMoNbCrW compared to the most vulnerable TiMoNbCr alloy.
dc.identifier.doi10.1007/s12666-023-03259-8
dc.identifier.endpage1576
dc.identifier.issn0972-2815
dc.identifier.issn0975-1645
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85185098965
dc.identifier.scopusqualityQ2
dc.identifier.startpage1563
dc.identifier.urihttps://doi.org/10.1007/s12666-023-03259-8
dc.identifier.urihttps://hdl.handle.net/20.500.12587/24616
dc.identifier.volume77
dc.identifier.wosWOS:001161361600002
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer India
dc.relation.ispartofTransactions of The Indian Institute of Metals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectRefractory high entropy alloys; Ball milling; Refractory metals; Mechanical alloying; Nanomaterials
dc.titleEffects of Cr and W in TiMoNb Refractory High Entropy Alloys
dc.typeArticle

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