The Effect Of Microstructure Length Scale On Dry Sliding Wear Behaviour Of Monotectic Al-bi-sn Alloys

dc.creatorCosta
dc.creatorThiago A.; Dias
dc.creatorMarcelino; Freitas
dc.creatorEmmanuelle S.; Casteletti
dc.creatorLuiz C.; Garcia
dc.creatorAmauri
dc.date2016
dc.datedez
dc.date2017-11-13T13:12:00Z
dc.date2017-11-13T13:12:00Z
dc.date.accessioned2018-03-29T05:50:15Z
dc.date.available2018-03-29T05:50:15Z
dc.identifierJournal Of Alloys And Compounds. Elsevier Science Sa, v. 689, p. 767 - 776, 2016.
dc.identifier0925-8388
dc.identifier1873-4669
dc.identifierWOS:000384427200100
dc.identifier10.1016/j.jallcom.2016.08.051
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0925838816324185
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/326781
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1363806
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe addition of third elements to Al-based monotectic alloys can increase the alloy load capacity, and depending on the nature of the third element can also improve the tribological characteristics. In the present investigation 1.0 wt.% Sn is added to Al-Bi alloys of hypomonotectic, monotectic and hypermonotectic compositions, giving rise to microstructures typified by droplets of a self-lubricating mixture of Bi and Sn embedded in the Al-matrix. These alloys were directionally solidified with a view to permitting microstructures with a wide range of interphase spacings to be obtained. Micro-adhesive wear tests were carried out and experimental equations relating the wear volume, V, to the interphase spacing are proposed. A more homogeneous distribution of Bi/Sn droplets in the microstructure is shown to be conducive to lower V. The lowest wear rates and wear volumes are shown to be related to the monotectic composition (Al-3.2 wt.% Bi-1wt.% Sn alloy). The presence of higher fraction of Fe-oxide areas interrupting the Bi/Sn lubricant layer, is shown to induce inferior wear resistance for the hypermonotectic alloy (Al-7.0 wt.% Bi-1wt.% Sn) when compared with that of the monotectic alloy. (C) 2016 Elsevier B. V. All rights reserved.
dc.description689
dc.description767
dc.description776
dc.descriptionFAPESP - Sao Paulo Research Foundation, Brazil [2013/15478-3, 2013/25452, 2013/23396-7, 2014/50502-5]
dc.descriptionCAPES
dc.descriptionCNPq (The Brazilian Research Council)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherElsevier Science SA
dc.publisherLausanne
dc.relationJournal of Alloys and Compounds
dc.rightsfechado
dc.sourceWOS
dc.subjectMonotectic Alloys
dc.subjectSolidification
dc.subjectMicrostructure
dc.subjectWear Resistance
dc.titleThe Effect Of Microstructure Length Scale On Dry Sliding Wear Behaviour Of Monotectic Al-bi-sn Alloys
dc.typeArtículos de revistas


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