Zn–Al–Cu alloys: exploring the correlations between microstructure, copper content, and wear

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dc.contributor.authorMedeiros, Múcio Dantas de
dc.contributor.authorCosta, Thiago Antônio Paixão de Sousa
dc.contributor.authorSeptimio, Rudimylla
dc.contributor.authorSpinelli José Eduardo
dc.contributor.authorCheung, Noé
dc.contributor.authorGarcia, Amauri
dc.contributor.authorSilva, Bismarck Luiz
dc.contributor.authorIDhttps://orcid.org/0000-0003-2863-5780
dc.contributor.authorIDhttps://orcid.org/0000-0003-2424-8839
dc.contributor.authorIDhttps://orcid.org/0000-0002-5816-8821
dc.contributor.authorIDhttps://orcid.org/0000-0003-0611-1038
dc.contributor.authorIDhttps://orcid.org/0000-0003-1120-8926
dc.contributor.authorIDhttps://orcid.org/0000-0002-3834-3258
dc.contributor.authorIDhttps://orcid.org/0000-0001-7191-1942
dc.date.accessioned2025-11-03T22:09:40Z
dc.date.available2025-11-03T22:09:40Z
dc.date.issued2025
dc.description.resumoZn–Al-based alloys are widely used as tribological materials in bearing applications. Understanding the combined effects of third-element additions and cooling rates during solidification is essential for improving their wear resistance. This study investigates the influence of Cu additions (0.8 and 1.3 wt%) and cooling rates on the microstructure and wear behavior of a Zn-8wt.%Al alloy, produced using a nonsteady-state directional solidification technique. Increasing Cu content reduced the secondary dendritic spacing (λ2) and eutectic fibrous spacing (λF) at the same solidification velocity or cooling rate. Worn volume (VW) is correlated with λ2, but only in the alloy with higher Cu content does VW show a dependence on λ2. Despite its higher hardness, the alloy with 1.3 wt% Cu exhibited lower wear resistance due to a more intense release of Cu-rich phases acting as abrasive particles
dc.identifier.citationMEDEIROS, Múcio Dantas de; COSTA, Thiago Antônio Paixão de Sousa ; SEPTIMIO, Rudimylla; SPINELLI, José Eduardo; CHEUNG, Noé; GARCIA, Amauri; SILVA, Bismarck Luiz. Zn-Al-Cu Alloys: Exploring the Correlations between Microstructure, Copper Content, and Wear. Advanced Engineering Materials, v. 27, n.17, p. 2500775, set. 2025. Disponível em: https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202500775. Acesso em: 14 out. 2025.
dc.identifier.doihttps://doi.org/10.1002/adem.202500775.
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/65993
dc.language.isoen
dc.publisherAdvanced Engineering Materials
dc.subjectZn–Al alloys
dc.subjectCopper addition
dc.subjectCooling rate
dc.subjectMicrostructure
dc.subjectWear resistance
dc.titleZn–Al–Cu alloys: exploring the correlations between microstructure, copper content, and wear
dc.typearticle

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