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dc.contributor.authorCheng, Yu
dc.contributor.authorHao, Qi
dc.contributor.authorQiao, Jichao
dc.contributor.authorCrespo Artiaga, Daniel
dc.contributor.authorPineda Soler, Eloi
dc.contributor.authorPelletier, J. M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationCheng, Y. [et al.]. Effect of minor addition on dynamic mechanical relaxation in ZrCu-based metallic glasses. "Journal of non-crystalline solids", 1 Febrer 2021, vol. 553, núm. 120496, p. 120496:1-120496:11.
dc.description.abstractThe dynamic mechanical behavior of Zr50-xCu34Ag8Al8Pdx (x = 0 and 2) bulk metallic glasses was probed by mechanical spectroscopy. The results suggest that microalloying retards the relaxation dynamics. The physical aging was analyzed considering a model based on the variation of the concentration of flow units and the Kohlrausch-Williams-Watts (KWW) equation. In the current study, the characteristic parameters of the two models, ßc and ßaging, reflect the faster annihilation of flow units at higher temperature and the increase of dynamic heterogeneity with temperature, respectively. The mechanical relaxation spectrum was also analyzed. Based on the KWW equation and the quasi-point defect model, replacing Zr with a small amount of Pd can slightly increase the dynamic inhomogeneity and reduce the defect concentration. The analysis according to the HN function suggests that the addition of Pd increases the relaxation time. However, it does not significantly alter the shape of the relaxation time distribution.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshMetallic glasses
dc.subject.otherMetallic glass
dc.subject.otherMechanical relaxation
dc.subject.otherStructural heterogeneity
dc.subject.otherPhysical model
dc.titleEffect of minor addition on dynamic mechanical relaxation in ZrCu-based metallic glasses
dc.subject.lemacVidres metàl·lics
dc.contributor.groupUniversitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorCheng, Y.; Hao, Q.; Qiao, J.; Crespo, D.; Pineda, E.; Pelletier, J.
local.citation.publicationNameJournal of non-crystalline solids

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